Table of Contents
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Table of Contents
Summary of Contents for Wisdom AUDIO SYSTEM CONTROLLER SC-1
- Page 1 Owner’s Manual Wisdom Audio System Controller SC-1...
- Page 2 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
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Page 3: Important Safety Instructions
Important Safety Instructions Please read all instructions and precautions carefully and completely before op- erating your Wisdom Audio equipment. 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this equipment near water. 6. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manu- facturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade of the third prong are provided for your safety. If the provided plug does not fit into your socket, consult an electrician for replacement of the obsolete outlet. 10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the ap- paratus. 11. Only use attachments/accessories specified by the manufacturer. 12. Unplug this apparatus during lightning storms or when unused for long peri- ods of time. 13. Refer all servicing to qualified personnel. Servicing is required when the ap-... -
Page 4: Table Of Contents
Professional Acoustic Design ................23 References ......................23 Getting Ready to Calibrate ................24 System Connections .....................24 Overview of the Process ..................24 Before Calibration ....................25 During Calibration ....................25 Wisdom System Configuration ..............26 Connecting the PC ....................26 Wisdom System Configuration ..............26 Basic Setup ......................26 Basic Setup tab .....................27 6.x Phantom ....................27 Multi-Zone Setup (part 1) ................28 Speaker Selection ....................28... - Page 5 Bass Management ..................31 Post Calibration Trims ...................32 Audyssey MultEQ Pro ..................33 ® Launching MultEQ Pro ..................33 Room Calibration ..................33 MultEQ Pro Welcome screen ................34 Job Information .....................34 Options/Microphone Selection ..............35 Multi-Zone Setup (part 2) ................35 Zone Configuration ..................35 Room Dimensions ..................36 Equipment Info .....................37 Measurement .......................37 Microphone position ..................37 Measuring additional positions ..............38...
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Page 6: Unpacking The Sc-1
Unpacking the SC-1 Please exercise caution when unpacking your new Wisdom Audio SC-1 to ensure that you do not strain yourself. Caution! Do not attempt to lift your SC-1 while bending or twisting from the waist. Use your legs for lifting, not your back. Always stand as straight as possible and keep the SC-1 close to your body. After unpacking your SC-1, keep all packing materials for future transport. In the event that you need to ship your SC-1, only the original, purpose-designed shipping carton is acceptable. Any other method of shipping this product runs a significant risk of damage to the SC-1—damage that would not be covered by the warranty. Carefully inspect your SC-1 for possible damage due to shipping. If you discover any, contact your Wisdom Audio dealer immediately. Although your Wisdom Audio SC-1 delivers outstanding performance straight Warm up/break-in period out of the box, you should expect to hear it continue to improve as it reaches its normal operating temperatures and its various components “break in.” It has been our experience that the greatest changes occur within the first 25-50 hours, but that the SC-1 will continue to improve in sound quality for about 300 hours, after which time it remains quite constant. The only exception to this rule is if power is removed from the unit, allowing it to cool down. In this case you should expect a brief warm-up period before the SC-1’s sound quality is at its best. (Fortunately, you will never have to repeat the full 300 hour break-in period.) -
Page 7: Placement Considerations
Placement Considerations For your protection, review “Important Safety Instructions” and PRECAUTION “Operating Voltage” before you install your SC-1. Note that adequate clearance for the AC cord and connecting signal cables must be left behind your SC-1. We suggest leaving at least six inches (15 cm) of free space behind your SC-1 so all cables have sufficient room to bend without crimping or undue strain. If possible, the SC-1 should also be placed in such a way that the power switch on the rear panel is easily accessible. This switch disconnects power from the unit completely, resulting in effective disconnection of the SC-1 from the AC mains. You might think of this as a “vacation switch,” should you wish to turn off your system completely when you will be away from home for a prolonged period of time. Just remember to turn it back on again when you return. Your Wisdom Audio SC-1 contains many active devices and a great deal of Ventilation signal processing. It will run quite warm under normal operation. It should not be placed directly on top of another component that generates significant heat, such as most power amplifiers. Do not block the vents on the sides of the unit. Mechanical drawings are included in this manual to facilitate special installa- tions where necessary (see “Dimensions” at the end of this manual). -
Page 8: Operating Voltage
Operating Voltage For compatibility with existing household outlets, a standard three prong, 15 ampere plug is provided on the removable, IEC-standard AC mains cable. The Wisdom Audio SC-1 may be set for 100-120V or 200V-240V AC mains op- eration. Outside the United States, and depending on local electrical codes and regulations, the AC mains cord may need to be replaced with one that conforms to local plug/outlet standards. The operating voltage of the SC-1 may not be changed by the user. Your SC-1 has been preset at the factory for the voltage of the country for which it was built. If you move to a country with a different AC mains voltage, please contact your local Wisdom Audio distributor or Wisdom Audio for assistance. Caution! Always make sure the SC-1 is set for the correct voltage before connecting it to AC mains power! Failure to do so can permanently damage the unit. The voltage setting of the unit is determined by the country for which it was manufactured, and is clearly marked on the... -
Page 9: Special Design Features
Special Design Features Audyssey MultEQ XT is a room equalization solution that calibrates any audio Advanced Room Correction ® system so that it can achieve optimum performance for every listener in a large listening area. MultEQ XT captures acoustical information at multiple locations ® throughout a listening area in both the time and frequency domains. It uses a sophisticated clustering algorithm to combine this information so that acousti- cal problems are accurately analyzed. Based on these measurements, MultEQ XT calculates an equalization solution that corrects for both time and frequency response problems in the listening area and also performs a fully automated sur- round system setup. The result is clear, well-balanced sound for every listener. We then went further and provided support for recalling up to three complete Multiple Setup Memories and independent setup calibrations, any of which can be selected as needed. While a single setup is all that is necessary, having the ability to recall any of multiple setups can solve some otherwise difficult situations. For example, you might want to have selectable setups for • different room conditions (e.g., drapes open vs. closed) • slightly different target curves (e.g., music vs. gaming) • various seating arrangements Only you and your dealer can decide whether you would benefit from taking advantage of any of these possibilities. Most people obtain everything they need from a single setup; but having the flexibility to address unusual circumstances can be invaluable. People who have wanted to extract the highest performance from their systems Bi- or Tri-amplification have known for a long time that driving each section of the speaker directly and separately yields the finest results. Of course, this requires having a dedicated, active crossover to divide the frequency range appropriately before the power... -
Page 10: System-Specific Eq
Since each channel of the amplifier is delivering current into its load only over a limited range of frequencies, several forms of distortion are reduced as com- pared to each channel handling the full range of musical information. The SC-1 supports up to a “7.3 channel” system, meaning that up to seven main speakers can be supported (all of which are biamplified), plus up to three inde- pendent subwoofer channels. All of these outputs benefit from room correction, described above. Wisdom Audio speakers deliver extraordinary performance from slim, elegant System-Specific EQ enclosures. However, we cannot cheat the rules of physics. Delivering powerful bass from such small enclosures places unusual demands on both the woofers and the amplifiers used to drive them. Specifically, equalization is used to compensate for the unusually small enclo- sure volume behind the woofer. This approach is used in almost all dedicated subwoofers today, and we use it in our full range speakers. Doing so allows us to achieve the bass performance usually associated much larger speakers, but in elegant enclosures that support modern lifestyle choices. -
Page 11: Front Panel
Front Panel Power Switch, Standby Indicator and Input Clip Indicator The SC-1 features a sculpted front panel that conceals two switches under the flexible ends of the middle section. On the left side, gently pressing the end of the center section will engage a microswitch under the face of the SC-1, which will in turn toggle the unit between operate and standby modes. The international symbol for power is inscribed in this location to designate its purpose. The amber LED indicator on the left side of the center section is lit when the SC-1 is in standby to indicate that it is receiving power; it is off when the SC-1 is either fully on or when there is no power being supplied to the unit. (When the SC-1 is fully on, one of the setup memory LEDs will be lit to indicate both power and which setup memory is being used. If all the LEDS are off, no power is being supplied to the unit.) The SC-1 requires several seconds to “boot up” when coming out of stand- by. The amber LED flashes during this startup process, turning off when it is complete. One of the Setup Memory LEDs will turn on at this point to indicate which memory is active). Finally, if the SC-1 detects input clipping on any of its channels, the Standby LED will flash rapidly for three seconds. If the clipping continues (at least once per three-second interval), it will continue flashing. In the unlikely event that you see this indication, you should turn the system volume down to reduce distortion and potential damage to your speakers. Setup Memory LED Indicators The Wisdom System Controller incorporates the latest version of Audyssey MultEQ XT room correction to enable it to address room- ® specific problems that would otherwise compromise performance. Under... - Page 12 most circumstances, a single calibration of the system for the room and your preferred listening positions is all that is necessary. But the SC-1 provides storage of up to three complete and independent calibrations to address various situations. These three LEDs indicate which of the three setup memories is currently active. They also serve to indicate that the unit is powered up and operat- ing normally. (When the unit is in standby, only the amber standby LED on the left side of the front panel is lit; the blue memory LEDs are off.) The LEDs indicate which of the three setup memories is active: • LED 1 on = Setup memory #1 enabled • LED 2 on = Setup memory #2 enabled • LED 3 on = Setup memory #3 enabled • LED 1 blinking slowly = MultEQ bypassed temporarily ® The bypass mode is available so you can hear the difference room correc- tion has made on your system. When the room correction subsystem is bypassed, the active crossover and other system-specific circuitry is still engaged. This allows you to easily hear only what the room correction software is doing for your system. You can cycle through the available memories and bypass mode by press- ing the Setup Calibration Switch to the right of these indicators. (See 3, below.) In addition, there is one special case: • During room correction calibration (only), all three LEDs will be on, and the LED for the setup memory you are working on will blink for the duration of the calibration. The LEDs will return to their normal operation as described above once the results of the calibration are saved permanently to memory. Setup Calibration Selector Switch Pressing the right side of the center section of the SC-1 front panel will activate a microswitch that cycles the unit through the available setup memories.
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Page 13: Rear Panel
Voltage set at factory for destination country OUTS s/n: SC-1 System Controller made in USA RS232 12v trigger www.wisdomaudio.com ~ AC INPUT Rear Panel Caution! Turn off your power amplifiers before attempting to connect anything to your Wisdom Audio SC-1. 7.3 Channel Inputs The SC-1 supports multichannel systems of up to 7.3 channel configura- tions; that is, you may have as many as seven main channels and three independent subwoofer channels controlled by the SC-1. These ten bal- anced audio inputs accept signals from a preamplifier/processor with balanced outputs via high quality XLR connectors. The pin assignments of these XLR-type female input connectors are: Pin 1: Chassis ground Pin 2: Signal + (non-inverting) Pin 3: Signal – (inverting) Connector ground lug: chassis ground These pin assignments are consistent with the standards adopted by the Audio Engineering Society. Refer to the operating manual of your bal-... -
Page 14: Using Single-Ended Preamplifiers
(the inverted signal) together. This can easily be checked with an ohmme- ter: the impedance between Pin 1 and Pin 3 should approach zero. Note that the most suitable adapter on the input side of the SC-1 is different than the appropriate adapter on the output side, due to the SC-1’s high input impedance. Should you need them, properly wired adapters are available from Wisdom Audio for a nominal charge. 7 Channel High (Planar) Output These seven balanced audio outputs carry the room-corrected “high pass” portion of the audio spectrum, and must be connected to the amplifiers that drive the planar magnetic panels. -
Page 15: Using Single-Ended Amplifiers
RCA-Adapters/Switchcraft-Corporation/322X.xhtml 7 Channel Low (Woofer) Output These seven balanced audio outputs carry the room-corrected “low pass” portion of the audio spectrum, and must be connected to the amplifiers that drive the woofer sections of the loudspeakers. The pin assignments of this XLR-type male output connector are: Pin 1: Chassis ground Pin 2: Signal + (non-inverting) Pin 3: Signal – (inverting) Connector ground lug: chassis ground These pin assignments are consistent with the standards adopted by the Audio Engineering Society, and are used with the purpose-designed SA- series power amplifiers from Wisdom Audio. If you elect to use a different amplifier for your woofers, please refer to the operating manual of your power amplifier to verify that the pin assignments of its input connectors correspond to your Wisdom Audio SC-1. If not, wire the cables so that the appropriate output pin connects to the equivalent input pin, in order to preserve the polarity of the musical signal. If your power amplifier does not have balanced inputs, the adapter used Using single-ended amplifiers to convert from balanced to single-ended must “float” Pin 3 (the inverted signal). This can easily be checked with an ohmmeter: the impedance be- tween Pin 3 and either the center pin or the shield skirt on the RCA should be infinite. Tying the output of Pin 3 to ground (as some adapters do) will compromise the performance of the SC-1. Should you need them, prop- erly wired adapters are available from Wisdom Audio for an additional charge, or they can be purchased online at http://www.markertek.com/Connectors-Adapters/Audio-Adapters/XLR-to- RCA-Adapters/Switchcraft-Corporation/322X.xhtml. 3 Channel Subwoofer Output... -
Page 16: Using Single-Ended Amplifiers
RCA-Adapters/Switchcraft-Corporation/322X.xhtml. USB Port This USB port is used by your installer to connect a Windows-compatible PC for setup and calibration. It provides two-way communication between the SC-1 and the computer that is used for adjusting the many parameters of the system controller. RS232 Interface The RS232 interface allows an external control system such as AMX, Con- trol4, Crestron, or Savant to control the SC-1. All basic operational modes are supported (operate, standby, selecting setup memories). When the SC-1 is first powered up, it will identify itself to the control system via the RS-232 port, sending either Wisdom Audio SC-1 Wisdom Audio SC-1 Ready... ERROR …depending on whether there is at least one setup memory that has been calibrated and is available for use. (For proper operation, at least one setup memory must be saved into the SC-1’s non-volatile memory.) The RS232 port is wired as a DCE, and connects via a straight cable to a DTE, or via a null modem/crossover cable to another DCE (uncommon). • Pin 2 is the TRANSMIT for data FROM the SC-1 TO the control system, and carries RS232 signal name RxD • Pin 3 is the RECEIVE for data FROM the control system TO the SC-1, and carries RS232 signal name TxD • Pin 5 is the GROUND/COMMON for the pin 2 and pin 3 sig- nals The other pins are not connected, the shell is grounded at the same point as pin 5. Signal names RxD and TxD are named from the point of view of... -
Page 17: Remote Turn-On Tip Polarity
The remote trigger input will be operated by any positive-polarity DC signal between 3–20 volts (only a few milliamps are required), with tip po- larity as shown below: – Remote turn-on tip polarity Input Signal: 3-20 volts @ less than 10 mA Output Signal: 12 volts @ 100 mA The DC Trigger Input has priority over the front panel switch. Therefore, if a trigger voltage is present at this input connector, the unit will be forced on and the front panel switch will be ignored. When the voltage transi- tions from high to low (off), the unit will go into standby. When there is no voltage present at the trigger input (either because the controlling device is not sending, or because the plug is removed), the front panel switch will operate the SC-1 as you would expect. The 12v Trigger Output jack is driven to a “high” state of 12 volts a few seconds after the SC-1 is turned on, and can source as much as 100 mA of current at 12 volts. This signal may be used in turn to control other com- ponents, such as the Wisdom Audio SA-series of amplifiers. Each Wisdom Audio component has a short delay built into its DC trigger system to fa- cilitate a staggered turn-on sequence. Your Wisdom Audio dealer can help you take advantage of these design features to maximize your system’s convenience and versatility. - Page 18 AC Mains Input, Switch and Fuse Assembly A conventional, 15-ampere IEC standard power cord is used with the SC-1. A high quality AC mains cord is included with the product, although the use of the standardized IEC receptacle means that you may easily substi- tute another high quality AC mains cord if you wish. Warning! Your new Wisdom Audio SC-1 has been safety-tested and is designed for operation with a three-conductor power cord. Do not defeat the “third pin” or earth ground of the AC power cord. An AC mains switch is located just above to the power cord on the rear panel of the SC-1. This switch may be used to disconnect the unit from the AC mains without having to actually unplug the SC-1 from the wall outlet. If you plan to be away for an extended period, or have any other reason to turn the SC-1 completely off, you may either unplug the SC-1 or you may use the AC mains switch. Danger! Potentially dangerous voltages and current capabilities exist within your SC-1. Do not attempt to open any portion of the SC-1’s cabinet. There are no user-serviceable parts inside your SC-1. All service of this product must be referred to a qualified Wisdom Audio dealer or distributor. We recommend that care be taken to ensure that all AC plugs for the equipment in the system be wired so as to ensure proper AC polarity. Doing so will mini- mize noise in the system. In the U.S., a simple AC mains tester (found at any hardware store) can test to ensure that your electrical outlets are wired properly. Elsewhere in the world (for example, in European Union countries), the AC mains plugs themselves are not always polarized. Your dealer can test for the proper orientation of the plug in the outlet. In such a case, it is good practice to mark both plug and outlet to...
- Page 19 Pull out the red fuse block, and check both fuses. If either is blown, please contact your local Wisdom Audio dealer (or Wisdom Audio) for service.
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Page 20: Introduction To Room Acoustics
Introduction to Room Acoustics Wisdom Audio believes in equalization. Assume for a moment that you had a “perfect” loudspeaker: as soon as you place it in your room, its perfection is gone. In fact, even good rooms often introduce deviations of 20 dB to the re- sponse of the system. It seems strange to us to worry about tenths-of-a-decibel differences between one component and another when there are 10-20 dB problems right there in the room with you. At the same time, room equalization is not a panacea. It does not solve all prob- lems. In fact, and somewhat paradoxically, EQ works best when it has the least to do. It is best used as the “finishing touch” on an otherwise good system. Un- fortunately, most people do not understand that the most important component in their system is their room. This manual does not have the space for a full description of everything that goes into creating excellent room acoustics; doing so would require a textbook of several hundred pages. Instead, we will give you some ideas, and some refer- ences to pursue should you want to learn more. There are many myths floating around pertaining to what a “good room” should Start With the Room be like. One of the most common is that it should have non-parallel walls. Without going into the details, we recommend staying with rectangular rooms whose dimensions do not share common divisors. Thus a room with dimensions of 8' by 16' by 20' would be quite poor (since the dimensions are all divisible by a length of 4', and 16 is also multiple of 8). By contrast, a room whose dimensions are 9' by 16' by 29' would be much better, since none of the dimensions are mathematically related to one another. There are infinite variations on this idea. If you have the flexibility to choose (or modify) your room dimensions to avoid such problems, do so. Either way, our room correction will be a big help. Another myth that should be dispelled is the notion that the walls (and ceiling Rigid Walls and floor) of the room should be extremely rigid in order to reproduce good bass. Rigid, inflexible walls reflect energy extremely well; thus you will keep more of the bass energy in the room. This much is true. However, those rigid... -
Page 21: Main Speaker Placement
Within the room itself, placement of the speakers and the listener will have a Main Speaker Placement profound effect on the performance of the system, particularly below 300 Hz or so. There is no “perfect” position that will solve all problems, but finding the best compromise will make it easier to solve the remaining problems with the SC-1. Your Wisdom Audio dealer can help you with optimizing your speaker place- ment, which is never quite as simple as it seems it should be. The characteristics you should listen for are several: • Stable, 3-dimensional stereo imaging This usually requires reasonable symmetry within the room, and a bit of space between the speakers and adjacent side walls (to minimize the adverse effects of early first reflections). Mono (correlated) pink noise can help here, though it does not replace listening to music. With pink noise playing in both speakers, you should hear a tightly-defined little “ball” of pink noise floating in space exactly halfway between the speakers. • Smooth, consistent bass Oft-cited rules of thumb for smoother bass reproduction include both “placing the speakers at different distances from the side walls vs. the wall behind them,” and “placing them at ‘odd frac- tions’ of the room’s dimensions” (e.g., fractions in which the denominator is an odd number, like ⁄ ⁄ ⁄... -
Page 22: Subwoofer Placement
7.2 channel system layout Subwoofers offer somewhat greater flexibility in placement, since the frequen- Subwoofer Placement cies they reproduce are not readily localizable by the human ear. This is due to the fact that the wavelengths they reproduce are more than ten feet (3 meters) long, but our ears are located only about 6-7 inches (≈ 17 cm) apart. Thus these extremely long waves do not contribute meaningfully to the imaging that the main speakers create. However, this fact does not mean that the placement of the subwoofers has no effect on the sound quality in the room. Far from it. The subwoofers are the most likely to suffer from the response irregularities introduced by the room itself, operating as they do below approximately 80 Hz in most systems. Recent research into the behavior of rooms as a function of speaker placement has concluded that — if you have the freedom to do so — there are significant advantages to placing several smaller subwoofers around the room, rather than relying on a single large woofer. Moreover, the optimum placement is usu- ally centered on each of the four walls. If you have the luxury of doing so, this simple placement strategy can reduce the size of the room’s response irregulari- ties from 20 decibels down to perhaps as little as 6-8 decibels. Reducing the room’s inherent problems to this degree is a huge advantage. It allows the SC-1 to put its considerable abilities to work on perfecting your sys- tem’s response, rather than on trying to perform major corrective surgery. Rectangular rooms have six reflecting surfaces (four walls, ceiling and floor) Room Treatment that reflect sound to the listener, after various delays introduced by the indirect routes the sound waves take on their way to the listener. These first reflec- tions are particularly damaging to sound quality. Looking at the simplest case of stereo reproduction, you have a minimum of twelve first reflection points in your room that deserve some attention. Unfortunately, it is often difficult to do much about the ceiling and floor reflec- tions, even though they are arguably the most destructive. (The minimization of these reflections is one of the strongest arguments for the tall, line source loud- speakers that Wisdom Audio builds.) This leaves you with eight “first reflections” that you should consider minimizing somehow. These points are easily found by having a friend move a small mirror along the four walls of the room, while you sit at the listening position. Any place on the wall where you can see a reflec-... -
Page 23: Professional Acoustic Design
The difference between the average listening room and one that is professionally designed and implemented is huge. A great listening room will disappear to an astonishing degree, letting the experiences captured in your recordings speak to you directly. A well-designed room is also quieter and more comfortable. It can easily become a favorite retreat for peace and rejuvenation. If you decide to investigate the possibility of improving your room with the help of a professional, it is important to find someone who focuses on domestic/ residential spaces. Most acousticians are trained to deal with large spaces — air- ports, auditoriums, lobbies in commercial buildings, etc. The problems seen in “small” rooms (residential spaces) are quite different, and outside the experience of most acousticians. Find someone who specializes in and has lots of experi- ence designing home studios, home theaters, and the like. Your Wisdom Audio dealer may be such a person; failing that, he/she can help you find such a pro- fessional. Books on Acoustics: References The Master Handbook of Acoustics, F. Alton Everest, TAB Books Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms by Dr. Floyd Toole Suppliers of Acoustic Treatments: Acoustic Innovations, http://www.acousticinnovations.com/ Acoustic Sciences Corporation, http://www.acousticsciences.com/ Echo Busters, http://www.echobusters.com MSR Acoustics, http://www.msr-inc.com/home_theater/hometheater.html... -
Page 24: Getting Ready To Calibrate
If you have not done so already, now would be a good time to also make sure that all loudspeaker cable connections are snug and cleanly made, with proper attention being paid to polarity (+ to +, and – to –) everywhere. As in any system, we recommend that the power amplifiers be the last com- ponents turned on, and the first components to be turned off. That way, if any “upstream” components in the system emit a turn-on transient of some sort, the speakers cannot be damaged. If you “daisy chain” your DC triggers from the SC-1 to the Wisdom Audio SA-series amplifiers, the amplifiers will turn on auto- matically in series, one after another, after short delays. (See Rear Panel, item 7.) Your Wisdom Audio SC-1 must be set up by your dealer, who has the requisite Overview of the Process equipment and software on a laptop computer. Briefly, the process is as follows: 1 Using the Wisdom Audio supplied System Configuration software, configure the SC-1 to match the specifics of your system (so it knows which speakers it is working with). 2 Calibrate the system to the room using the Audyssey MultEQ Pro ® software (integrated with the Wisdom Audio program) and an Au- dyssey Installer Kit. This calibration process uses multiple sets of measurements taken with a professionally calibrated microphone (that is included in the Audyssey Installer Kit) to achieve a more accurate correction that results in clear, well-balanced sound within the measured listening area. 3 If needed, repeat the room calibration process, saving the results in up to three memories in the SC-1. This capability allows you to optimize the system to the room under different conditions (for example, drapes open vs. drapes closed). -
Page 25: Before Calibration
Caution! Do NOT connect the output of the microphone to the SC-1 until the software explicitly instructs you to do so in the calibration process. Connecting the microphone with the SC-1 and amplifiers on at the wrong time can cause dangerous feedback that may damage your loudspeakers. Any subwoofer low-pass filter (crossover) should be defeated, or set to the THX Before Calibration setting. Sometimes subwoofers have a special input that bypasses any internal crossover, often called the “LFE input.” The elimination of the subwoofer’s own low pass filter must be done before MultEQ Pro measurements are made so ® MultEQ Pro can see what every part of the system is truly capable of doing. If the subwoofer low-pass filter cannot be defeated, set it to its maximum fre- quency. Any subwoofer gain controls should be set to their nominal settings, such as at the THX position, or at 12 o’clock on a conventional level control. Also, if the subwoofer has any sort of “Auto Standby” or sleep mode that turns the power to the subwoofer off after it does not receive any signal for some period of time, please disable this mode for the duration of the calibration. Doing so will ensure that the subwoofer is always on and always outputting a signal, which is important when taking accurate measurements. Audyssey MultEQ XT Room Correction performs more than equalization. It During Calibration ® also measures various parameters that should be set within the associated pre- amplifier/processor so that the entire system is optimized. Among the items measured are: • the acoustic distance from each loudspeaker to the Main Listening Position (or position 1) microphone location; • the recommended crossover frequency for each channel to the subwoofer; • the level trim for each loudspeaker channel, and • an indication of the polarity of each loudspeaker. Consult the documentation of the connected processor to set the parameters given by the results of MultEQ Pro. Use the findings of MultEQ Pro to set the time delay, the crossover frequency, and the level trim for each loudspeaker, as... -
Page 26: Wisdom System Configuration
Wisdom System Configuration Turn on both your PC and the SC-1. Wait approximately thirty seconds for the Connecting the PC SC-1 to finish its startup routines, and for as long as it takes for Windows to completely start up. Important: Do not connect the the PC to the SC-1 until both are fully “on” (meaning neither Off nor in Standby). Also, do not Shut Down your PC while its USB cable is still connected to the SC-1. Using the USB A-B cable in the Audyssey™ Installer’s Kit, connect the SC-1 to the PC on which is installed the WisdomSysConfig and Audyssey MultEQ Pro ® software. (Note that the SC-1 must be allowed to finish its startup process before connecting it to the PC via USB.) Launch the WisdomSysConfig application. You should see a splash screen for a few seconds that looks like the following: Wisdom System Configuration If the connection between the PC and the SC-1 is not made for any reason, you will see an error notification on your PC screen: Double-check your USB cable, click OK, and retry the connection. When com- munication is established, you will be taken to the next screen. If this is the first time the SC-1 has been set up, you will receive the following Basic Setup error message. -
Page 27: Basic Setup Tab
Click “OK” to be taken to the first screen in the setup process: Basic Setup tab The screen above allows you to configure the SC-1 for the number and nature of the channels in your system. Select the appropriate configuration from the drop- down menu, wherein the normal conventions are used to describe the system, e.g., a “5.1 Multichannel” system includes left, center, right, two surround chan- nels, and a “0.1” subwoofer channel. If you have already configured an identical system and saved the configuration, you can load it by pressing the button below the drop-down menu. If you are returning to set up an SC-1 that has already been set up at least once, this screen will be skipped. The software will instead read the current settings of the SC-1 and display the third panel (Room Calibration). If you need to return to this screen to change the basic system configuration, you can click the Previous button on the third and second screens to return, or click directly on the appro- priate tab. A special case exists in this menu system, that being the “6.x Phantom” system 6.x Phantom configurations. This is intended to describe the case of what amounts to a 7.x system minus its center channel. This configuration may be used in situations where using a center channel is simply not practical. Instead, the surround processor folds the center channel information into both the left and right speakers equally, creating a “phantom” center channel image. It is called out separately in this menu because there is also a “6.x Multichannel” configuration which includes a center channel and a single, rear surround chan- nel. In either case, the SC-1 needs to know which channels are being used so it can produce the correct test signals during calibration. When you have selected the basic system description that fits your situation, click the Next button. -
Page 28: Multi-Zone Setup (Part 1)
If you are setting up more than a single zone, choose the setting in this menu Multi-Zone Setup (part 1) that is the sum of all zones. For example, if you have a primary zone with a 5.1 theater, and a secondary zone with a 2.1 music system, select a 7.2 system. If you want to have three 2.1 systems, we recommend choosing “6.3 Phantom” since it keeps things a bit simpler later on. (See pp. 32–33.) This step is important, since System Configuration passes along information to MultEQ Pro about which channels of hardware are going to be used. You will finish the process of defining which channels are used for which speaker, and which zones, later when you get to MultEQ Pro. The second tab provides visual confirmation that the basic system description Speaker Selection you selected is appropriate, and a graphic way to tell the SC-1 which loudspeak- ers you are using on each channel. Follow the on-screen instructions, as shown below. Speaker Selection screen 1 When you select a particular speaker location, the chosen speaker will be high- lighted and the right-hand panel will change to show you the various possibili- ties available for that speaker, as seen below. -
Page 29: Speaker Selection Screen 2
Speaker Selection screen 2 Select both the model (e.g., L75, P20) and the Speaker Mount type (e.g., In-wall, On-Wall, or Freestanding), found in the top right corner. Repeat this process for each speaker location in turn. This information is important, as it automati- cally loads important traits and capabilities of each speaker into the appropriate channel of the SC-1’s processing. As an example, this identification is how the SC-1 determines what crossover frequency to use between the midwoofers and the planar magnetic sections of the selected speaker. (Note that the list of avail- able speakers may change to reflect only valid options. Thus, you would not be presented with the option of using a normal speaker as a subwoofer.) While you should always use Wisdom Audio speakers when possible (since the SC-1 is specifically designed to support them), a “Generic” speaker model is provided in case you need to integrate non-Sage speakers into the system. For example, you may have a situation in which architectural constraints mandate in-ceiling speakers for the surround channels. Wisdom Audio does not manufac- ture in-ceiling speakers. In this case, select the “Generic” speaker type for those locations and connect the High Pass outputs of the SC-1 for those channels to the amplifier used to drive the non-Sage speakers. (The Low Pass outputs will be deactivated for “Generic,” single-amplified speakers, and a full-range signal will instead be routed out the High Pass outputs.) A “GenSW” option is also provided, so as to accommodate the use of one or more non-Wisdom Audio subwoofers. When you are finished defining which speakers are being used in each location, click on the “Commit to SC-1” button to download all of the relevant informa- tion to the system controller. On the third tab of WisdomSetupConfig.exe, the left two-thirds of the screen Room Calibration is devoted to adjusting for the potential difference in overall level between the woofer and planar magnetic sections of the system, while the right side con- cerns itself with room correction. We discuss the left side first. There are two reasons why the woofers and the planar magnetic sections of the speakers might not match one another in volume. First of all, the planar sections tend to be more sensitive than the woofer sec- tions, that is, they play more loudly for the same amount of power. This is a... -
Page 30: Determining The Trim Value
function of both our unusually sensitive planar magnetic drivers and the small enclosure volumes behind the woofers. The magnitude of this difference varies among the different models, and with varying room placement. The second reason for a difference in overall level between upper and low fre- quency sections of the speakers is that the amplifier chosen to drive the planars may or may not have the same input sensitivity as the one used to drive the woofers. The best solution for both situations is the same: measurement the response of Determining the trim value the speaker, both above and below the crossover frequency. Then adjust the planar magnetic side of the speaker up or down as needed to match the output of the woofer section. This adjustment can be made on the left side of the Room Calibration window, in the area labeled “High Crossover Volume Trim.” (See below. Note that you will see fewer trims if you are using fewer than seven main channels.) Room Calibration tab The SC-1 itself provides a high resolution measurement system, used in the MultEQ Pro calibration process. Without getting too far ahead of ourselves (since we have not yet discussed MultEQ Pro), the idea is to take three measurements of what is happening in your room, and to look at the resulting response curve. Comparing the average level above and below the crossover frequency will tell you how much you need to adjust the planar section up or down. This process “roughs in” the re- sponse of the system so that MultEQ has less work to do. The cardinal rule of all equalization is that it is most effective when it is least needed. Anything you can do to get the system closer to where you want it to be before Audyssey is asked to fix the rest is a Good Thing. Once the trim values have been entered, click the “Save Speaker Trim” button to download them to the SC-1. -
Page 31: Bass Management
Optionally, your installer may also save the basic speaker configuration at this point to an XML file on your PC’s hard disk. Doing so saves having to repeat the process if he ever needs to set up another SC-1 with the same associated equip- ment, as might happen if your system were damaged in an thunderstorm. This XML file would be loaded by the “Load Config From File” button on the Basic System Description page. Bass Management The Bass Management tab allows you to configure the SC-1 to derive an appro- priate subwoofer output from a pair of Left and Right inputs. This capability is used only in situations where no surround processor is available to provide the bass management function, as is the case when you are using a conventional stereo preamp instead. In the screen shot above, we have previously set up a 6.3 Phantom system, intending to use the SC-1 to provide three different 2.1 channel zones. (The number of zones shown on this tab varies, depending on how many speakers have been defined.) You may create either mono or stereo subwoofer channels to complement your main speakers, up to the hardware limit of a total of 7.3 channels. as an ex- ample, you could use the SC-1 as a three-way stereo crossover to create a single, triamplified stereo system, and still have 5.1 channels left over for a home the- ater (e.g., a 2.2 zone and a 5.1 zone). Define how you want the SC-1 to treat the available channels using the pull- down menus. You must specify whether you want the SC-1 to derive one or two subwoofer channels (None, Mono, or Stereo), and you must specify both the low pass and the high pass crossover frequencies (normally 80 Hz, although we give you other options in 10 Hz increments). Finally, you must send these selections to the SC-1 by clicking the “Commit to SC-1” button on the right side of the screen. -
Page 32: Post Calibration Trims
Post Calibration Trims The Post Calibrations Trims tab allows you to adjust the relative volumes of the various channels in the system when you are not using a surround processor. It complements the Bass Management tab in the previous section, and allows you to make the type of level adjustments that are taken for granted in surround sys- tems when using a stereo preamp instead. All these values should be left at 0.0 if you do have a surround processor in the system. (All such adjustments should be made in only one place; doing them in two places would ensure confusion and a poor result.) MultEQ Pro will provide you with recommended settings after taking all your measurements. After the calibration process in MultEQ Pro is complete, return to this tab to enter the data that is provided on the Detection Results page of MultEQ Pro. -
Page 33: Audyssey Multeq ® Pro
Audyssey MultEQ ® At this point, the SC-1 knows all the critical information about the associated Launching MultEQ Pro equipment with which it is working, except for the most important component of all: your listening room. Note: Your installer has been trained and has a thorough knowledge of the Audyssey MultEQ Pro software. Additional information about its recommended use and detailed explanations of the technology is available in the Audyssey MultEQ Pro User Guide for the Sound Equalizer. Moving to the right side of the Room Calibration screen, select the EQ 1 radio button and click the Launch Room Calibration button. Room Calibration Doing so will launch MultEQ Pro in a window that sits in front of the Wisdom- SetupConfig window. -
Page 34: Multeq Pro Welcome Screen
MultEQ Pro Welcome screen Warning! Do not connect the microphone to the SC-1 at this time, since feedback may result that could potentially damage your loudspeakers. Click the right-facing triangle to move to the Job Information screen. Job Information Complete the form above (and several to come) so as to document the installa- tion properly, and then move on to the measurements of your room. -
Page 35: Options/Microphone Selection
Options/Microphone Selection Important: choose the serial number of the microphone you are using. All mea- surements are filtered through a calibration file that ensures their accuracy. In System Configuration, you established the total number of main and sub- Multi-Zone Setup (part 2) woofer channels being used. (See pages 26-27.) In our example, Zone 1 had 5.1 channels, and Zone 2 had 2.1 channels, for a total of 7.2 channels used (out of the 7.3 that the SC-1 supports). MultEQ Pro initially assumes that all speakers are in Zone 1, as shown below. Zone Configuration The Zone Configuration screen allows you to reassign specific channels to either a second or a third zone, using the radio buttons and pulldown menus. In this case, for example, you might put channels 5, 6, and 9 into Zone 2. This would give you a 5.1 system for your main theater that uses the Left, Center, Right, and Surround outputs along with Subwoofer 1, while the second zone utilized the “Back” channels and Subwoofer 2. This Zone Configuration process is critical, since it defines when the speakers are “chirped” for measurements by breaking them into groups. You can thus “chirp” all of Zone 1 and then move the microphone to the second zone before resuming with the measurements. -
Page 36: Room Dimensions
Important! We strongly recommend that you leave the pulldown menus as they are, in their default settings, since nothing you do here will change the silkscreened labeling on the back of the SC-1. These labels correspond to how the SC-1 is labeled; changing something here is likely only to create confusion later. Instead, it is easiest to use the first several channels for your theater, and then to use any remaining channels in pairs (Surround L&R, Back L&R) for additional stereo zones. Similarly, you could have three 2.1 systems set up on a single SC-1. Select “6.3 Phantom” on the first screen of System Configuration, and then set up as fol- lows: • Zone 1 = Left, Right, Subwoofer1 • Zone 2 = Left Surround, Right Surround, Subwoofer 2 • Zone 3 = Left Back, Right Back, Subwoofer 3 Using the “6.3 Phantom” option skips the Center channel entirely, which is sim- pler when trying to remember which channel is being used in which room. Room Dimensions Providing the information on the room dimensions can be done in either English or metric system measurements. It does not alter the nature of the room correc- tion being done now; rather, when these results are uploaded to the Audyssey website, it provides Audyssey with an enormous database of actual measure- ments in real rooms, along with pertinent data about those rooms. Audyssey now has tens of thousands of these measurements, which enables them to im- prove their algorithms over time. -
Page 37: Equipment Info
Equipment Info This information will be included on the certificate that is available from the in- staller section of the Audyssey web site. The Measurement screen is where MultEQ Pro collects the data it requires for Measurement ® accurate room correction. At this point, your installer will connect an XLR cable between the microphone preamplifier LINE OUT connector and the Left input of the SC-1 (the top-left corner as seen from behind). The mic preamp should be placed as close to the microphone as possible (e.g., the shortest cable length). Use any additional XLR cables between the mic preamp and the SC-1, where they will carry the line level signal. Place the microphone in a vertical position with the capsule pointing directly at Microphone position the ceiling for all room measurements. Make sure there are no nearby obstruc- tions or large reflecting surfaces. (artwork courtesy of Audyssey Laboratories™) The Measurement screen includes a help section of scrolling text to provide more details. (See below.) Some important notes: • The microphone should be positioned as far out from the stand as possible to minimize the effect of stand reflections. The micro-... -
Page 38: Measuring Additional Positions
phone was calibrated at “grazing incidence” and should point to the ceiling, not at any of the speakers. • Make the room as quiet as possible. Background noise can disrupt the room measurements. Close windows, silence cell phones, televisions, radios, air conditioners, fluorescent lights, home appli- ances, light dimmers, or other devices. • Cell phones should be turned off or placed away from all audio electronics during the measurement process as Radio Frequency Interference (RFI) may cause measurement disruptions (even if the cell phone is not in use). • Refrain from talking and don’t sit or stand directly between any of the speakers and the microphone during the room measurements. Each speaker emits a series of test signals during the measure- ments and your body and background noise can disrupt the mi- crophone’s ability to record the room response to the test signal. The first (Position 1) measurement must be located at the primary listening posi- tion, as this is the measurement that establishes both distance and level settings for your surround processor. Place the microphone’s tip at a location halfway between where the primary listener’s ears would be, pointing at the ceiling. Click the Measure button. Each speaker will be “chirped” ten times, followed by a brief pause during which it remains important to be quiet. This is because the system is measuring background noise levels to ascertain the quality of the data it just obtained. When the system has successfully measured each speaker, the application will Measuring additional positions be ready to measure the next measurement position. Start at the center of the listening area and then take measurements around it spaced by 1-2 feet. The idea is to sample multiple points throughout the listening area. Measurements near the side and back walls should be avoided even if people may sit there. -
Page 39: Detection Results
Note: Measuring some distant corner where no one would be listening, or close to a room boundary such as a wall or floor, is actually counterproductive. It will compromise the quality of the resulting room correction by introducing irrelevant data. A minimum of three measurements must be taken before the application will allow you to move on to the next step. Up to 32 measurements may be taken, although most rooms can be characterized quite well with 7-10 measurements (depending on the size of the listening area). The measurement process takes several minutes depending on the number of channels MultEQ Pro will have to measure. It is essential to accurate room cor- rection, and it actually goes quite quickly. Think of it: in a 7.3 channel system, using ten listening positions, one thousand measurements are being made. (Ten speakers, times ten locations, times ten chirps per speaker is 1000 measure- ments.) This is far more data than any human technician could master, and allows the SC-1 to do a far better job of ascertaining what problems are most characteristic of the room (rather than idiosyncratic to a single microphone loca- tion). Click the forward (right-pointing) triangle to move to the next screen after you are satisfied that you have made all the relevant measurements. Detection Results This screen displays the speaker Distance and Trim results derived from your Po- sition 1 measurement and the recommended Crossover derived from all of your position measurements. MultEQ Pro lists individual speaker crossovers. ® Note: You must manually enter the information on this screen into the preamplifier/processor’s settings. Speaker Type indicates the approximate size of the detected loudspeaker as de- termined by its native in-room bass response. - Page 40 Distance can be displayed in feet, in milliseconds, or in meters (cycle among these choices by clicking the blue underlined column label). Which one is best depends on the information your surround processor’s menu system needs. Use the appropriate value to set the distance (delay) in the preamp/processor. Note: The distance measurement returned by Audyssey MultEQ Pro when using Wisdom Audio’s unique Regenerative Transmission Line™ (RTL™) subwoofers is often inaccurate. If and when the subwoofer distance seems wrong, please enter and use the actual, measured distance as determined by a tape measure between the primary listening position and the bass vent of the RTL subwoofer. Trim is displayed in dB. This number is not a dB SPL number; it is a relative Trim. The Trim information provided here must used to configure the channel- to-channel speaker level trims in the preamp/processor. Simply copy these numbers over to the corresponding output level adjustment settings in the setup menu of your processor. Crossover is displayed in Hz, listed in order of preference. Use these numbers to enter the crossover frequency for each of your speakers. Depending on your preamplifier/processor, follow one of the below three steps: 1 If your preamplifier/processor allows for individual speaker cross- over settings, use the crossover frequency suggested for each speaker. 2 If your preamplifier/processor pairs the crossover settings for your front and surround speakers, then using the drop-down menus on the MultEQ Pro find the highest-on-the-list recommended cross- ® over shared by your Left Front and Right Front speakers. Input that as your “Front” speaker crossover setting on the preamplifier/pro- cessor. Use the same method for your surround speakers. 3 If the preamplifier/processor only allows one crossover setting for the entire system then use the first crossover number MultEQ Pro ® lists for the center channel. You should rarely choose the “Large” setting for the crossover in your surround processor. This setting means that the deepest bass for that channel will not be sent to the subwoofer. This choice makes sense only if your system does not...
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Page 41: Target Sound Options
Contrary to popular belief, a target curve that is flat from 20 Hz to 20 kHz is not always the one that will produce optimal sound. There are several reasons for this including the fact that most loudspeakers are much more directional at high frequencies than they are at low frequencies. This means that the balance of direct and reverberant room sound is very different at the high and low ends of the frequency spectrum — something that should be accounted for in selecting an appropriate target curve. The Target Sound Options screen allows you to determine the end result you would like to hear, after MultEQ Pro has finished calculating the corrections ® needed to get you there. The four curves are used as follows: • The Flat curve creates equalization filters that correct the re- sponse to flat from the low frequency cutoff point that MultEQ ® Pro has determined to the upper frequency limit of the tweeters. This setting must be used in a THX system in order to allow THX re-equalization to operate as it was intended. It is also recom- mended for very small or highly treated rooms in which the listen- er is seated close to the loudspeakers (where most of the sound heard is directly from the speakers, rather than from subsequent reflections within the room). • The Standard HF Rolloff curve introduces a gentle attenuation of high frequencies that accounts for the balance between direct and reflected sound for most domestic rooms. This is the recom- mended curve for Wisdom Audio speakers under most circum- stances. • The Gaming curve adds some boost below about 40 Hz to enliv- en the gaming experience. While technically less “accurate” than the Standard HF Rolloff curve, this option is unquestionably fun and exciting. Be certain your subwoofers can handle a little extra... -
Page 42: Disconnect The Microphone
boost in the bottom octave before you get too carried away with this setting. • The SMPTE 202M curve is also known as the “X-curve” and is an international standard for the high frequency roll-off applied in a typical 500-seat movie theater. It is appropriate for professional mixing spaces and dubbing stages that must be calibrated for film sound postproduction. It can also be used in extremely large play- back spaces (room volume greater than 5000 cu. ft.) With the three setup memories available in the SC-1, it is possible to take advan- tage of multiple target curves. For example, it is a relatively simply matter to use EQ 1 for movies, in which a Flat target curves and THX processing in the surround processor is most appro- priate; EQ 2 could be used for music listening, where the Standard HF Rolloff is usually the more desirable target; and EQ 3 might include the Gaming curve for your XBox or Playstation 3 exploits, or simply when you would like a little more perceived “weight” in your music. Accessing these settings can even be fully automated by means of a home automation controller (Crestron, AMX, Control4, etc.) via the RS-232 port on the rear panel of the SC-1. Having selected your target curve, it is now time to let MultEQ Pro do the cal- Disconnect the microphone ® culations needed to fully optimize the system in the room. Before you do any- thing else, however, it is essential to disconnect the measurement microphone and reconnect the normal Left channel input. A warning dialog will pop up on the PC screen to remind you of this fact. Warning! You must remove the Calibrated Microphone Preamplifier’s XLR connection from the SC-1’s Left input before continuing. Not doing this will cause microphone feedback to be played on the system at levels that could damage the speakers. -
Page 43: Save Results
SC-1 button. After a short delay to download the needed information to the SC-1, you will be able to listen to whatever content you like (music, movies, etc.). You can also turn MultEQ room correction on and ® off using the buttons on this screen to hear the difference room correction is making in your system. If you like what you hear, click on the Save Permanently to SC-1 button to transfer the same filter to a non-volatile section of memory in the SC-1 that will survive power outages and the like. Writing to this memory takes a little longer, but once it is done you can access this setting at any time from the front panel of the SC-1, or by way of RS-232 and your favorite home automation system. You can also view the before-and-after results in your default browser by click- ing on the View Results... button. This page can also be printed out for sub- sequent review and comparison with other setup memories you may elect to calibrate. The View Results... button can be an invaluable tool for diagnosing unusual Advanced Calibration Tip room and/or equipment problems. Get in the habit of doing your first three position measurements at the primary listening position and two other posi- tions nearby (e.g., the two next-most popular chairs). Then advance to the Save Results page and look at your Before curves in View Results..(Note that the vertical scale in View Results... is 5 dB per division.) The overall, average level of the area below about 250 Hz and the area above 1000 Hz should be just about the same. If not, disconnect the microphone, close MultEQ Pro and adjust the HF Trim on the last screen of Wisdom Sys- Config for any speakers that seem out of adjustment. Some rooms absorb bass terribly, especially ones that have hung ceilings. Others may reinforce the bass while absorbing the mids and highs (especially those that have been treated with excessive absorption). Being able to adjust the midbass and bass relative to... - Page 44 the midrange and treble regions is a powerful tool that allows you to “home in” on a good setting that is specific to the room at hand prior to MultEQ Pro doing the finer adjustments. As an example, we have seen rooms that worked perfectly at the recommended starting setting of a –9 dB HF Trim for the L75i, and another room that required only –2 dB for the exact same speaker. (This was a traveling demo system one of our salespeople was taking from one dealer showroom to the next.) Without the ability to get the system in the right “ballpark” for these extremely different rooms, even MultEQ Pro would have been hard-pressed to yield the results we were looking to achieve. As an example, we’ll look at the same system, in the same room, with three dif- ferent HF Trim settings, showing both Before and After results using the View Results... button. To keep things simple, the microphone was never moved (not recommended for normal calibrations). First up is an L75i system with the HF Trim untouched, at 0.0 dB. You can see that the planar section is significantly louder overall than the woofer section. MultEQ respects what it interprets as a low frequency roll off, and there is little energy below about 150 Hz. This manual suggests an HF Trim of -9.0 dB for the L75i; so our intrepid installer realizes his mistake and resets the system accordingly. The resulting curve now looks like this: While this isn’t bad (and would be further improved by measuring more posi- tions in the room), it is probably overkill in this room. You are losing more dynamic headroom in the system than is really necessary by pulling down the planar magnetic drivers by the full 9 dB. This would be even more true if there is a subwoofer in the system, since it would be reproducing all the deep bass. Looking at an HF Trim setting of -5.0 dB yields the following, with the same mi- crophone position.
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Page 45: Calibration Completed
This response would blend nicely with a subwoofer, crossing over at 50 Hz. So, from these quick measurements you can see that an HF Trim of about -5.0 dB is best suited to this particular room. The final performance will be improved by moving the microphone around as you normally do, so as to give the system more information about what is going on in the room. In fact, the same speaker, in the same position, but with a total of ten measurements in the room, looks like this: Giving MultEQ Pro more information about what is happening in the room really does improve its ability to correct for room problems. Calibration Completed Congratulations – your system is fully set up and calibrated. - Page 46 You can use the close box shown at the top right corner of the screen (shown above) to exit MultEQ Pro, returning you to the last page of WisdomSystem- ® Config.exe. If you would like to calibrate another setup memory, select the next one in order (e.g., EQ 2 after you have saved EQ 1) and repeat the MultEQ Pro por- ® tion of the setup process. This allows you to take advantage of multiple target curves, or different seating arrangements, or different acoustic conditions such as having heavy drapes open or closed.
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Page 47: Care & Maintenance
Care & Maintenance To remove dust from the cabinet of your SC-1, use a feather duster or a lint-free soft cloth. To remove dirt and fingerprints, we recommend isopropyl alcohol and a soft cloth. Dampen the cloth with alcohol first and then lightly clean the surface of the SC-1 with the cloth. Do not use excessive amounts of alcohol that might drip off the cloth and into the SC-1. Caution! At no time should liquid cleaners be applied directly to the SC-1, as direct application of liquids may result in damage to electronic components within the unit. -
Page 48: North American Warranty
North American Warranty When purchased from and installed by an authorized Wisdom Audio dealer, Five Year Warranty Wisdom Audio electronic products are warranted to be free from defects in ® material and workmanship under normal use for a period of five years from the original date of purchase. During the warranty period, any Wisdom Audio component exhibiting defects in materials and/or workmanship will be repaired or replaced, at our option, without charge for either parts or labor, at our factory. The warranty will not apply to any Wisdom Audio component that has been misused, abused, altered, or installed and calibrated by anyone other than an authorized Wisdom Audio dealer. Any Wisdom Audio component not performing satisfactorily may be returned to the factory for evaluation. Return authorization must first be obtained by either calling or writing the factory prior to shipping the component. The factory will pay for return shipping charges only in the event that the component is found to be defective as mentioned above. There are other stipulations that may apply to shipping charges. There is no other express warranty on this component. Neither this warranty nor any other warranty, express or implied, including any implied warranties of mer- chantability or fitness, shall extend beyond the warranty period. No responsibil- ity is assumed for any incidental or consequential damages. Some states do not allow limitations on how long an implied warranty lasts and other states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. This warranty is applicable in North America only. Outside of North America, please contact your local, authorized Wisdom Audio distributor for warranty and service information. -
Page 49: Obtaining Service
Obtaining Service We take great pride in our dealers. Experience, dedication, and integrity make these professionals ideally suited to assist with our customers’ service needs. If your Wisdom Audio component must be serviced, please contact your dealer. Your dealer will then decide whether the problem can be remedied locally, or whether to contact Wisdom Audio for further service information or parts, or to obtain a Return Authorization. The Wisdom Audio Service Department works closely with your dealer to solve your service needs expediently. Important! Return authorization must be obtained from Wisdom Audio’s Service Department BEFORE a unit is shipped for service. It is extremely important that information about a problem be explicit and com- plete. A specific, comprehensive description of the problem helps your dealer and the Wisdom Audio Service Department locate and repair the problem as quickly as possible. A copy of the original bill of sale will serve to verify warranty status. Please in- clude it with the unit when it is brought in for warranty service. This step is not necessary if the warranty is registered at the time of purchase. (Another reason to register your purchase at http://www.wisdomaudio.com/registration/.) Warning! All returned units must be packaged in their original packaging, and the proper return authorization numbers must be marked on the outer carton for identification. Shipping the unit in improper packaging may void the warranty, as Wisdom Audio cannot be responsible for the resulting shipping damage. Your dealer can order a new set of shipping materials for you if you need to ship your component and no longer have the original materials. There will be a charge for this service. We strongly recommend saving all packing materials in case you need to ship your unit some day. If the packaging to protect the unit is, in our opinion or that of our dealer, inade- quate to protect the unit, we reserve the right to repackage it for return shipment at the owner’s expense. Neither Wisdom Audio nor your dealer can be respon- sible for shipping damage due to improper (that is, non-original) packaging. -
Page 50: Specifications
DC trigger input sensitivity 12V @ 100 mA ■ DC trigger output signal 100-120V or 200-240V Mains voltage ranges ■ See “Dimensions” ■ Overall dimensions 34 lbs. (15.4 kg) ■ Shipping weight For more information, see your Wisdom Audio dealer, or contact: Wisdom Audio 1572 College Parkway, Suite 164 Carson City, NV 89706 www.wisdomaudio.com information@wisdomaudio.com Ph: 775.887.8850 Fax: 775.887.8820... -
Page 51: Dimensions
Dimensions 17" (43.2 cm) ⁄ " ⁄ " (8.6 cm) (8.57 cm) ⁄ " (.95 cm) ⁄ " (39.4 cm) ⁄ " ⁄ " (3.2 cm) (3.2 cm) ⁄ " (42.9 cm) 13" ⁄ " (33 cm) (34.7 cm) ⁄ "... - Page 52 Wisdom Audio, Inc. Wisdom Audio 1572 College Parkway, Suite 164 Carson City, Nevada 89706 USA Telephone: 775.887.8850 Fax: 775.887.8820 http://www.wisdomaudio.com WSC1OM-1.8 © 10/2012 Wisdom Audio, Inc. All rights reserved. Printed in U.S.A.
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