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Please observe the following instructions to insure safe and proper system operation.
Note: Do not leave unit in direct sunlight or use in high humidity environments!!!
To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid electrical shock, do not open speaker enclosure or amp chassis cover. Please observe all warnings on the equipment itself. There are no user serviceable parts inside. Please refer all service questions to your authorized Velodyne dealer.
Please unpack the system carefully. This unit is heavy. Use caution when lifting or moving to avoid injury. Please save the carton and all packaging materials for future use. Packing this unit in any other carton may result in severe damage when shipping. Record the serial number for future reference.
Your new Velodyne subwoofer provides for a number of installation options. Read all the installation information below in order to determine which installation option is best for your system. Remember to perform all installation procedures with system power turned off to prevent possible damage.
The first step in installing your new Impact sub is to determine where it will be placed in the room. Unpack the system carefully and use the following guidelines in order to find the best room placement option.
True subwoofers operate at extremely low frequencies which are primarily omni-directional. Keep in mind that frequency response and output level can be drastically influenced by placement, depending on the acoustic properties of the listening room. To obtain optimum output from your subwoofer, try placing it within a foot of a corner. This location will offer the greatest output levels and optimum low frequency extension. If at all possible, your subwoofer should be placed along a wall. The worst location for a subwoofer is typically far away from any walls and close to the center of your room. Avoid these locations when possible. \When using a pair of Velodyne subwoofers in 2-channel stereo, it is preferable to feed each subwoofer with one channel and place each subwoofer near the satellite of the same channel.
Depending on the size and type of furnishings in the room, perfect placement may not be possible. Finding the best location within your enviconment will likely require some experimentation. \We suggest you experiment with the location during setup to find what sounds best to you when seated in your typical listening position.
Regardless of where you install your Velodyne subwoofer, it must remain in an upright position. Using, shipping or storing the subwoofer in any other position for an extended period of time may result in damage to the unit not covered by warranty.
This subwoofer has electronics built into the cabinet. Do not place the cabinet next to sources of heat such as furnace registers, radiators, etc. Do not place the unit near sources of excessive moisture, such as evaporative coolers, humidifiers, etc. The power cord should be routed in such a way that it will not be walked on, pinched or compressed in any way that could result in damaging the insulation or wire.
Your Velodyne Impact subwoofer is NOT magnetically shielded. Should you find it necessary to use it with an older CRT monitor or TV, keep it at least two feet from the monitor. Experiment for correct distance by minimizing distortion of the picture and colors.
Your new subwoofer is equipped with speaker-level and line-level inputs. Use the LINE LEVEL jacks when connecting your subwoofer to a pre-amp, signal processor (such as LFE out), linelevel crossover, or receiver with pre-amp level outputs. When using the line level jacks, some receivers may not provide enough signal to have the unit's auto-on feature operate properly. Additionally, this lack of signal may also cause the subwoofer to produce less output than it is capable of.
To alleviate this condition, we recommend the following steps:
The SPEAKER LEVEL jacks connect directly to the speaker outputs of any amplifier; integrated amplifier, or receiver. Your amplifier section will notice no additional loading effects when you use these inputs due to their very high impedance. If using the SPEAKER LEVEL inputs, you DO want to connect both channels, since different bass information might be present in each channel going to your main speakers.
Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!
To avoid damage to your main amplifier, be sure to maintain correct polarity when making all connections - red (positive) to red, and black (negative] to black. Be sure all connections are tight, and that there are no loose strands or frayed wires.
This control allows you to balance the output from the subwoofer to the main speakers in your system. This control should be set to achieve similar output levels from both the main speakers and subwoofer when listening to music. A good starting point for the volume control is two or three graduations from minimum.
Some manufacturers preset their receivers with the Sub-Out channel signal at a minimum level. It is very important to verify that your receiver Sub-Out channel is set to the same output level as your front right and left channels. Refer to your receiver manual for the individual channel level adjustment procedure. If your receiver Sub-Out channel is set too low, the subwoofer may appear to have a weak output, it may sound noisy or distorted, and the Auto On/Off feature may not operate properly.
Low-pass Crossover - 50 to 200 Hz
As noted above, all inputs sum the left and right channels together, with the resulting signal passing through an adjustable low-pass crossover before being amplified. The crossover control allows you to adjust the upper limit of the subwoofer's frequency response from 50 to 200 Hz. The subwoofer's response will begin rolling off above the frequency you set this control to. You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system. If your main speakers are smaller units with limited low frequency output, you may wish to choose a higher frequency (such as 100 - 120 Hz) than you would with larger speakers which have greater low frequency output. With larger speakers, you might start with this control set lower, such as 80 Hz.
Phase Adjustment - 0°/180°
This control allows you to "reverse" the phase of the subwoofer's output signal 180° to correct for any possible mismatch and resulting cancellation between the subwoofer and your main speakers/amplifier. To adjust, simply listen to the system with music playing, then depress the phase switch from one position to the other and listen for a change in mid-bass frequency output. The correct position will have a greater amount of apparent mid-bass frequency output.
For all installations, experiment with the phase switch to determine the setting (0 or 180 degrees) that produces the most mid-bass. If the settings sound similar, we recommend the "0" position.
The subwoofer will turn itself on automatically when an audio signal is present. If no signal is present for approximately eight minutes, the unit will switch to standby mode (Red LED). While in standby mode, your subwoofer will draw very minimal power.
If the Sub-Out channel signal level from your receiver is too weak, this feature will not operate properly and shut the subwoofer off while you are listening to it. To correct this, see VOLUME CONTROL section.
Figure 1.Impact Rear Panel Connections
Figure 1 shows the connections on the rear panel of the Impact. Following are brief descriptions of the connections described in Figure 1. More detail of these connections can be found below:
Receiver/Processor Subwoofer Outputs
The Velodyne subwoofer is designed to operate using the full range audio signal for input when using the built-in crossover. Many home theater processors/receivers (Dolby Digital, DTS, THX) have a "subwoofer out" jack (sometimes labeled "LFE") that is internally filtered, settable at the receiver/processor, and designed to be used with a powered subwoofer. In some installations, it may be beneficial to use BOTH the Velodyne crossover and the receiver/processor crossover, resulting in a steeper ultimate crossover slope. In some rare cases, combining both an external crossover and the one internal to the subwoofer may result in low output and increased noise. In these installations you may need to bypass the crossover in either the processor or your Impact subwoofer, or simply setting one crossover to a higher frequency (such as 120 Hz) will restore maximum performance.
(Refer to Figure 2a Line-Level Subwoofer Connection Diagram and Figure 2b Speaker-Level Subwoofer Connection Diagram for connection diagrams.)
When installing your new Velodyne subwoofer using the line level connections, you should always use shielded phono cables. There are many high quality cables available today. It is recommended that you keep the length of cable as short as possible to avoid any potential noise problems.
When using speaker level connections, use a high quality speaker cable that mates well with the connectors. Be very careful to avoid any loose strands or frayed wires that may result in a short, which may damage your equipment. Cables of extremely large size are not required due to the low current draw of this type of connection. Extremely large gauge wire may not properly fit in the terminals, resulting in a poor connection and possible short circuits.
Your Velodyne subwoofer does not require any regular maintenance. Normal dusting or cleaning of the surface for appearance purposes is all that is required. \We suggest you avoid any harsh detergents or chemicals when cleaning the cabinet. Abrasives, detergents, or cleaning solutions may damage the finish on the cabinet. We recommend using only a damp cloth to clean the cabinet.
During normal conditions, your new subwoofer may be left on continuously without any problems. The unit is equipped with a signal-sensing turn on/off that will automatically turn on the unit when a signal is present at the inputs and turn off the unit after several minutes when there is no longer any signal at the inputs.
Your new subwoofer is equipped with circuitry to provide maximum performance with greatest reliability.
The unit is protected against:
If either of the above should happen, you should reduce the volume setting or shut the unit off until normal operating conditions return. You may also want to plug the unit into a different wall outlet, as dropping power line voltage will be most noticeable under strenuous conditions and may result in the unit shutting down intermittently.
Before seeking service for your amplifier or subwoofer; please re-check all systems. Following is a simple troubleshooting guide to assist you.
If the protection circuitry is active, the unit may cycle on and off until operating parameters return to normal. Under more serious conditions, the unit may shut off completely. Normal operation should return upon cooling, but you may be required to turn the power off and then on again to reset the unit.
The following conditions require service by a qualified technician:
Thank You for Purchasing a Velodyne!
SPECIFICATIONS | IMPACT-Mini | IMPACT-10 | IMPACT-12 | |
Woofer | 6.5" (16.5 cm) active (5" piston diameter) & 8" (20.3 cm) passive (6.5" piston diameter) | 10" (24.5 cm) forward firing (8.2" piston diameter) | 12" (30.5 cm) forward firing (9.7" piston diameter) | |
Amplifier: Class D | 300 watts Dynamic Power/ 180 watts RMS | 250 watts Dynamic Power/ 150 watts RMS | 275 watts Dynamic Power/ 165 watts RMS | |
Cabinet Design | Acoustically neutral, down-firing passive radiator | Acoustically neutral, downward-firing port | Acoustically neutral, downward-firing port | |
Frequency Response | 38-140 Hz (+/- 3 dB) | 32-140 Hz (+/- 3 dB) | 29-140 Hz (+/- 3 dB) | |
Voice Coil | 2" copper-wound | 2" copper-wound | 2" copper-wound | |
Cone | 6.5" & 8" Anodized Aluminum Cones | Coated fiber | Coated fiber | |
Magnet Weight | 64 oz. (4.0 lbs) | 89.6 oz. (5.6 lbs) | 89.6 oz. (5.6 lbs) | |
High-Pass Crossover | Full range | Full range | Full range | |
Low-Pass Crossover | 50 - 200 Hz | 50 - 200 Hz | 50 - 200 Hz | |
Outputs | Left and right speaker level pass-through | Left and right speaker level pass-through | Left and right speaker level pass-through | |
Inputs | RCA Line level, LFE and Speaker Level Inputs | RCA Line level, LFE and Speaker Level Inputs | RCA Line level, LFE and Speaker Level Inputs | |
Phase | 0° or 180° | 0° or 180° | 0° or 180° | |
Auto On/Off | Yes | Yes | Yes | |
Removable Grill | Yes | Yes | Yes | |
Video Shielding | No | No | No | |
LED Power Indicator | Yes | Yes | Yes | |
Input Impedance | 65K ohm (for LINE INPUT jacks) 1.2K ohm (for SPEAKER LEVEL INPUT terminals) | |||
Sensitivity Speaker Level Line | 1.0V 100mV | 1.0V 100mV | 1.0V 100mV | |
Power Supply | 120V, 60 Hz AC | 120V, 60 Hz AC | 120V, 60 Hz AC | |
Cabinet (H,W,D) (includes feet and grille) | 11" x 10" x 12.6" 28.4 x 25.4 x 32 cm | 13.6" x 12.6" x 14.9" 38.4 x 32 x 48 cm | 15.1" x 14.2" x 18.9" 38.4 x 36 x 48 cm | |
Shipping Weight (approx.) | 24 lbs. (11 Kg) | 30 lbs. (13.6 Kg) | 38 lbs. (17.2 Kg) |
Specifications are subject fo change without notice.
115-120V | 220-240V | ||
DD Series DD-10 DD-12 DD-15 DD-18 Digital Drive 1812 Signature Edition | MiniVee 10 | DD Series DD-10 DD-12 DD-15 DD-18 Digital Drive 1812 Signature Edition | SMS-1 |
DEQ-R Series DEG-8R DEG-10R DEG-12R DEG-15R | Optimum Series Optimum-8 Optimum-10 Optimum-12 | CHT-G Series CHT-8Q CHT-10Q CHT-12Q CHT-15Q | SPLi Series SPL-800i SPL-1000i |
DLS R Series DLS-3500R DLS-3750R DLS-4000R DLS-5000R | SMS-1 | Impact Series Impact-Mini Impact-10 Impact-12 | SPL-Ultra Series SPL-800 Ultra SPL-1000 Ultra SPL-1200 Ultra |
Impact Series Impact-Mini Impact-10 Impact-12 | SubContractor Series SC-1250 SC-10 SC-12 SC-15 SC-IW SC-IF/IC SC-600 Amp SC-602 Amp SC-600 IW SC-600 IF/IC | MicroVee | SubContractor Series SC-1250 SC-10 SC-12 SC-15 SC-IW SC-IF/IC SC-600 Amp SC-602 Amp SC-600 W SC-600 IF/IC |
MicroVee | VX-11 | ||
MiniVee |
*NOTE: Please complete and return your warranty card within ten (10) days or
Register.... ON LINE... It's faster... and easier www.velodyne.com
To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel.
The lightning flash with arrowhead symbol is intended to alert the user to the presence of uninsulated "'dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the subwoofer.
To prevent electrical shock, match wide blade of plug to wide slot, fully inserted.
Velodyne Acoustics, Inc.
345 Digital Drive
Morgan Hill, CA 95037
408.465.2800 voice
408.779.9227 fax
408.779.9208 service fax
www.velodyne.com
Service E-mail: service@velodyne.com
Product E-mail: help@velodyne.com
Technical E-mail: techhelp@velodyne.com
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Velodyne impact-10, impact-12, impact-mini - Home Theater Subwoofers Manual
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