Deqx HDP-4 User Manual
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Deqx HDP-4 User Manual

High definition preamp processor
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High Definition Preamp Processor
HDP-4
HDP-5
PreMATE
PreMATE+
HDP-Express II
User Manual
Applies to DEQX-Cal version 3.02.
Revision 1.

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  • Page 1 High Definition Preamp Processor HDP-4 HDP-5 PreMATE PreMATE+ HDP-Express II User Manual Revision 1. Applies to DEQX-Cal version 3.02.
  • Page 2 IMPORTANT INFORMATION ISCLAIMER AND IMITATION OF IABILITY DEQX Pty. Ltd. (‘DEQX’) assumes no responsibility for loss or damage resulting from the use of any of its products. ® Refer to the license supplied with the DEQX Calibration software (pages 3 and 4).
  • Page 3 This is a legal agreement (‘Agreement’) between you (either an individual or an entity), the end user, and DEQX Pty Limited, Sydney, Australia. By installing, copying, or otherwise using the Product (as defined below), you agree to be bound by the terms of this Agreement. If you do not...
  • Page 4 The term of this Agreement shall commence on the date you accept this Agreement and shall continue unless terminated by DEQX in writing at any time, with or without cause. In the event that DEQX terminates this agreement, Recipient shall promptly return to DEQX, or certify destruction of, all full or partial copies of such product and related materials provided by DEQX.

  • Page 5: Table Of Contents

    CONTENTS 1 WELCOME TO DEQX ..............11 ..................12 YSTEM CONFIGURATIONS DEQX® ................. 13 CALIBRATION WORKS ..................13 OW TO USE THIS MANUAL DEQX ..................13 PERT CONSULTATION ..................14 ARRANTY REGISTRATION ..................... 14 BTAINING SUPPORT DEQX ..............14 NOTE ON LEGACY PRODUCTS 2 INSTALLATION AND CONNECTIVITY ..........
  • Page 6 DEQX User Manual 5 GETTING STARTED WITH DEQX-CAL ..........39 ..................39 NSTALL THE SOFTWARE DEQX-C ..................39 TOUR OF 5.2.1 The DEQX-Cal user interface ..................40 5.2.2 The main display area ....................41 5.2.3 The Control Panel and IO Manager ................42 ..................
  • Page 7 ..............75 REATE A PROFILE WITH NO CORRECTION ................76 REATE A CORRECTION PROFILE ............... 77 DD A SUBWOOFER OR SUBWOOFERS DEQX ............79 PLOAD THE CONFIGURATION TO THE ................80 O RE OPEN A CONFIGURATION 10 ROOM MEASUREMENT ..............81 10.1 R...
  • Page 8 ONFIGURING AN ACTIVE SPEAKER WITHOUT CORRECTION 13.8 S ........... 123 UBWOOFER INTEGRATION FOR A THREE WAY SPEAKER 13.9 A ..............124 DVANCED CONFIGURATION OPTIONS 14 USING MULTIPLE DEQX UNITS ............125 14.1 M ..................125 ASTER SLAVE CONTROL 14.2 M ..............126 ULTI AMP STEREO CONFIGURATIONS 14.3 M...
  • Page 9 18 OPTIONS AND CUSTOMIZATION ........... 151 18.1 O ....................151 PTIONS DIALOG 18.1.1 Configuration tab ....................... 151 18.1.2 Chart tab ........................153 18.1.3 DEQX tab ........................154 18.2 C ....................155 USTOMIZE DIALOG 18.2.1 Commands tab ......................155 18.2.2 Toolbars tab .......................156 18.2.3 Keyboard tab ......................156...
  • Page 10 Figure 6. Active three-way speaker ................108 Figure 7. Hybrid active-passive three-way speaker ............. 109 Figure 8. Connections between master and slave DEQX units ........126 Figure 9. Multi-way active speaker with master and slave DEQX......... 127 Figure 10. Multichannel or home theater DEQX system ..........128 IST OF TABLES Table 1.

  • Page 11: Welcome To Deqx

    Congratulations on purchasing a DEQX High Definition Preamp Processor. Your DEQX is one of the most advanced audio processors in the world, with patented digital audio processing, advanced algorithmic design, and an impeccable pedigree focused on delivering the best possible performance from a high-end audio system.

  • Page 12: System Configurations

    The DEQX also integrates either mono or stereo subwoofers. In that mode of operation, known as “single amp” in this manual, the DEQX and its accompanying DEQX-Cal™ software calibrate the speaker, correct for the room, and provide a fine-grained Preference EQ for different listening situations, media, and even for individual recordings.

  • Page 13: How Deqx® Calibration Works

    Chapters 2 through 4 guide you through the initial hardware setup and describe the front panel and the DEQX Remote. You will need to come back to these chapters to re- read the more in-depth sections, such as the three-band Preference EQ.

  • Page 14: Warranty Registration

    After registering, you will receive a return email with information and a password to obtain software updates, microphone calibration files, and documentation downloads. In addition, by registering, DEQX will be able to keep you informed of any important updates. BTAINING SUPPORT To obtain support, fill in the support form on our website: http://deqx.com/support.php...

  • Page 15: Installation And Connectivity

    One (1) printed User Manual (additional documentation is located on the CD-ROM) Physical installation The DEQX must be placed on a sturdy level surface, such as a shelf or in a suitable rack or cabinet. Allow a minimum of 5 cm (2 inches) on both sides for ventilation.

  • Page 16: Rear Panel Overview

    Ethernet port. Specific units differ in output connectivity with different analog and digital output configurations according to intended use. The HDP-4 and PreMATE lack the USB A, Ethernet, and 12V Trigger connectors in the center of the rear panel. The HDP-4 has an additional switch for mains input voltage selection.

  • Page 17: Analog Inputs

    All connected equipment should also be powered off. 2. When connecting to the rear panel, double-check that the connections are made correctly. If the DEQX is installed in a rack or cabinet, use good light so that the labeling is clearly visible.

  • Page 18: Digital Inputs

    DEQX User Manual IGITAL INPUTS All DEQX units have a full complement of digital inputs. Digital inputs are selectable with the DEQX Remote and from within DEQX-Cal. On the HDP-5 and PreMATE+, inputs can also be selected with the touchscreen display.

  • Page 19: Analog Outputs

    High. Individual outputs are labeled L1/R1, L2/R2, and L3/R3. HDP-Express II The HDP-Express II has three pairs of outputs as per the HDP-4 and HDP-5, provided as unbalanced signals on RCA connectors. The HDP-Express II does not have balanced outputs.

  • Page 20: Digital Outputs

    DEQX User Manual IGITAL OUTPUTS The HDP-4 and HDP-5 provide a full complement of digital outputs, as shown above. All digital outputs are on professional 75 Ω (75 ohm) BNC connectors and produce an S/PDIF digital audio stream at 96 kHz sample rate. (BNC-RCA adapters can be used for connection of RCA digital cables.) See page 24 for an example of the use of digital...

  • Page 21: Control / Data Interfaces

    RS-232 The top RS-232 port is an input control port. It is used when the DEQX is a slave unit in a multi-DEQX system (Chapter 14). It can also be used to control the DEQX from certain home automation systems (e.g.

  • Page 22: Measurement Microphone

    This socket accepts a standard IEC (IEC 60320 C13) mains plug. The specified AC mains voltage is 100-120 or 220-240 V at 50 to 60 Hz as set by the mains selector switch (HDP-4 only), or 1o0 to 240 V at 50 to 60 Hz (all products except HDP-4). Power switch The power switch applies power to the unit.

  • Page 23: Analog Output Example

    If not using a subwoofer, simply leave the subwoofer outputs disabled when configuring the DEQX in DEQX-Cal. For the HDP-4 or HDP-5, the output connections are still taken from L2 and R2 for the speakers and from L1 and R1 for the subwoofers. However, the labeling on the rear panel is slightly different, as shown below.

  • Page 24: Digital Output Example

    If a single (mono) subwoofer is used (as shown above), connect it to the L1 analog output (either unbalanced or balanced) and in DEQX-Cal, set the speaker configuration mode to “Single amp with optional mono subwoofer.” If stereo subwoofers are used, connect them to the L1 and R1 analog outputs (either unbalanced or balanced), and set the speaker configuration mode to “single amp with optional stereo subwoofers.”...

  • Page 25: The Front Panel

    RONT ANEL The DEQX front panel provides basic controls as well as status and feedback indicators for standby, volume control, and profile selection. These are a subset of the controls provided by the DEQX Remote (Chapter 4). The PreMATE+ and HDP-5 add an LCD touchscreen that provides a volume slider, input and profile selection, real-time metering, and other functions.

  • Page 26: Buttons And Indicator Leds

    DEQX Remote for these operations. The indicator LEDs behave the same way as other models. TANDBY Press the I/O button to take the DEQX out of or put it into standby mode. The indicator LED displays current unit status as shown here: Standby (red) The DEQX is in standby mode.

  • Page 27: Profile Selection

    −48 t0 −36 dB 3 dB −120 t0 −48 dB 6 dB Below −120 dB, the DEQX is effectively muted. The Volume LED provides an indication by color of the volume setting in 10 dB ranges, as illustrated in the diagram below.

  • Page 28: Touchscreen Display

    Note that the touchscreen display becomes inactive when DEQX-Cal connects to the DEQX. When this happens, the volume slider decreases to −∞ (all the way down) and all user input on the panel will be ignored. The display will turn itself off after approximately ten minutes.
  • Page 29 Note that the touchscreen display does not go to sleep when the Meters screen is displayed. EQ screen The EQ screen is, as of the writing of this version of the DEQX User Manual, still in development.

  • Page 30: Special Status Indicators

    Reset This button resets the touchscreen display drivers. It can be used on the advice of DEQX Support in the event of specific operational issues with the unit. PECIAL STATUS INDICATORS The front panel LEDs indicate special status, as follows.

  • Page 31: The Deqx Remote

    DEQX R EMOTE The DEQX Remote provides input and profile selection, mute and standby, and volume control. In addition, it provides access to the powerful three-band Preference EQ.

  • Page 32: Profile Selection

    Profile ��. NPUT SELECTION All DEQX models have two analog inputs and five digital inputs, all selectable with the DEQX Remote. The HDP-5 and PreMATE+ also act as a networked streaming audio destination if the “Auto” button is used.

  • Page 33: Olume Mute And Standby

    OLUME MUTE AND STANDBY Mute Mutes all outputs. The Volume LED on the front panel will flash while the DEQX is muted (unless the level is below 60 dB, in which case the Volume LED is not lit at all).

  • Page 34: Preference Eq

    Up to 100 Preference EQ presets can be stored in the DEQX and recalled with the remote. Note that Preference EQ is distinct from room EQ: Preference EQ is stored in the DEQX for each profile, but is not stored in the configuration. Loading a new configuration will therefore not change Preference EQ settings.

  • Page 35: Table 1. Mapping Of Eq Bands To Profile Leds

    (For example, suppose MID is pressed. If the DEQX currently has Profile 1 selected, the P1 LED will go out while P2 lights green, then P2 will go out and P1 will turn back on. If, however, the...
  • Page 36 DEQX User Manual To change to a specific frequency: Press Fx and then a single digit. The Profile LED corresponding to the active EQ band will briefly light green. The frequency of the active EQ band will be changed to the corresponding Quickset value printed on the back of the remote control and also shown below.

  • Page 37: Notes On Preference Eq

    The Preference EQ will be disabled if any of the profiles currently loaded into the DEQX use more than seven EQ bands for Room EQ (Chapter 12). Preference EQ commands are not transmitted over the RS-232 link from master to...

  • Page 38: User Mode

    DEQX User Manual SER MODE The User Mode button accesses diagnostic and testing functions built into the DEQX. These must be used only on the advice of DEQX Support. It is important that you do not attempt to use these functions except on specific advice from DEQX Support.

  • Page 39: Getting Started With Deqx-Cal

    The main software installer installs both DEQX-Cal™ and the USB driver needed by DEQX-Cal to communicate with the DEQX over USB. The software can be installed on 32-bit and 64-bit versions of Windows from Window XP through to Windows 10. (An Apple Mac computer can be used if Boot Camp is used to install and run Windows, or a virtual machine emulator such as Parallels or VMWare Fusion is used.)

  • Page 40: The Deqx-Cal User Interface

    DEQX-Cal. The wizards are described in following chapters. The status bar at the bottom of the window contains context-aware information, such as the current location of the cursor on a plot and the status of the DEQX connection.

  • Page 41: The Main Display Area

    The main display area holds a variety of windows that display controls, measurement plots, correction filters, configurations, and so on. These windows are opened as you work with DEQX-Cal to measure and calibrate your speakers and room. These wIndows can be manipulated with the Maximize, Minimize, Restore and Close buttons at their top right (just like regular full-sized windows).

  • Page 42: The Control Panel And Io Manager

    Wizard toolbar, or select it from the Tools menu. The Control Panel manages the “live” parameters of the DEQX, such as master volume, profile selection, input selection, output channel level and delay, and room EQ for each profile.

  • Page 43: Create A New Project

    Connect the DEQX to power, as described on page 22. Turn on the DEQX with the rear panel switch, wait a few seconds and then take it out of standby by pressing the I/O button on the front panel or the Standby button on the DEQX Remote.

  • Page 44: Set Up The Measurement Microphone

    Mount the microphone in a suitable stand and connect the XLR-XLR cable from the microphone to the Microphone input on the rear panel. Each microphone supplied with a DEQX Calibration Kit has a unique calibration file, identified by the serial number printed on the microphone. The calibration file must be loaded into DEQX-Cal for accurate results.

  • Page 45: Speaker Measurement

    To simplify the explanation, this chapter generally assumes that just one speaker is being measured. This is a good choice if you are still becoming familiar with DEQX-Cal, as modern hi-fi speakers (of a given model) are quite close to each other in response.

  • Page 46: Speaker And Microphone Positioning

    DEQX User Manual PEAKER AND MICROPHONE POSITIONING Figure 1 illustrates a typical indoor speaker measurement setup. A microphone stand with a boom arm is recommended for placement flexibility. Figure 1. Speaker measurement setup Move the speaker well away from the walls or other large objects such as furniture.

  • Page 47: Start The Speaker Measurement Wizard

    Chapter 6. Speaker Measurement TART THE SPEAKER MEASUREMENT WIZARD If you do not already have a project open, open an existing project or create a new one. Start the speaker measurement wizard by clicking on the Measure Speakers button in the Wizard toolbar or by selecting it from the Tools menu.
  • Page 48 “Bi amp” and “Tri amp” options.) 96k Measurement If this box is checked, the DEQX runs the measurement at a 96 kHz sample rate. This is recommended for all current DEQX products. If the box is unchecked, the DEQX runs the measurement at a 48 kHz sample rate.

  • Page 49: Select The Speaker To Be Measured

    (this should be zero for this measurement), and the height of the microphone. The information entered here is used by DEQX-Cal to calculate the initial length of the speaker calibration time window (page 56).

  • Page 50: Set The Measurement Signal Level

    DEQX User Manual ET THE MEASUREMENT SIGNAL LEVEL Screen 6. DEQX-Cal will upload the test signal to the DEQX, as shown by the “Initializing DEQX” indicator. When the screen switches to the “Playing test signal” indicator, switch to the IO Manager to view the meters.

  • Page 51: Run The Speaker Measurement

    Screen 6. The number of sweeps will be as set in the “Average over” parameter on Screen 3, plus one. (The first sweep is used by the DEQX to calibrate itself internally. The remaining sweeps are the ones used to determine the speaker response.) 3.

  • Page 52: Complete The Measurement

    DEQX User Manual OMPLETE THE MEASUREMENT Screen 8. When the measurement is completed, a thumbnail of the measured frequency response is displayed. Most of the time, you will simply click Accept. If you think there is an error in the measurement (for example, there was unexpected external noise or the confidence level is low), click Retry to run the measurement again.

  • Page 53: Speaker Calibration

    To keep the presentation simple, the examples show a single measurement being used for both speakers. Once you are more familiar with DEQX-Cal, you can use a separate measurement for each speaker. (For bi- amp and tri-amp speaker configuration modes, see Chapter 13.)

  • Page 54: Create A Calibration Template

    DEQX User Manual REATE A CALIBRATION TEMPLATE The calibration wizard can be entered directly from the last screen of the speaker measurement wizard (page 52). Or, start the calibration wizard by clicking on the Calibrate Speakers button in the Wizard toolbar or by selecting it from the Tools menu. If entering directly from the speaker measurement wizard, Screens 2 and 3 below will not be displayed.
  • Page 55 Chapter 7. Speaker Calibration Screen 5. Enter the name of the calibration template. Screen 6. You will be presented with a summary of the template parameters: Click Finish to proceed. On completing the wizard, a new calibration template opens, as shown in the annotated screenshot below.

  • Page 56: Set The Impulse Response Time Window

    DEQX User Manual ET THE IMPULSE RESPONSE TIME WINDOW Screen 1 / Anechoic tab. This tab shows the measured time domain impulse response of the speaker and the room. It is used to set a time “window” on the impulse response to exclude room reflections, thus obtaining the anechoic response of the speaker alone.

  • Page 57: Set Smoothing

    Chapter 7. Speaker Calibration ET SMOOTHING Screen 2 / Smoothed Measurements tab. This tab shows the frequency response corresponding to the impulse response time window. The adjustment on this tab is the smoothing applied to the frequency response plot: Smoothing is used to compensate for unwanted reflections in the speaker measurement.

  • Page 58: Set The Correction Frequency Limits

    DEQX User Manual ET THE CORRECTION FREQUENCY LIMITS Screen 3 / Limits tab. The blue rectangle on this tab sets the correction frequency region and its cut and boost limits. The rectangle can be altered by clicking and dragging on any of its edges. The predicted response (shown in red by default) will change as the edges are moved.
  • Page 59 Chapter 7. Speaker Calibration You can also double-click on the limits rectangle to bring up a dialog box that allows you to enter the limits directly (shown at right). As a general rule, increasing Max Boost beyond the default of 6 dB is not recommended.

  • Page 60: Set Correction Parameters

    DEQX User Manual ET CORRECTION PARAMETERS Screen 4. DEQX-Cal will ask you to confirm parameters that set how tightly it attempts to correct for amplitude and group delay: Max Delay Sets the maximum delay that can be introduced by the correction filter. If using the DEQX with video, the default of 3 ms is recommended in order to avoid introducing video sync errors.

  • Page 61: Generate The Correction Set

    – the fall-off is an artifact of the short time window. To proceed directly to configuration (Chapter 9), click the Configure DEQX button to the top left of this tab. Or, to create additional correction sets, read the following pages.

  • Page 62: Verify The Correction Filter

    The DEQX has the ability to immediately take a verification measurement on a correction filter without having to first configure the DEQX and upload the correction filter to it. To start a verification measurement, go to the correction set tab that you wish to verify and click the Verify Results button.

  • Page 63: Creating Additional Correction Sets

    5. Proceed through the remaining screens to generate the new correction set. ENAMING CORRECTION FILTERS While DEQX-Cal allows you to name the correction set when generating filters, the names of the individual correction filters are still automatically generated (“Correction Filter 1” and so on). Once you have generated a few different correction filters, this can make selecting the correct filter for configuration (Chapter 9) more difficult.

  • Page 64: T O Re - Open A Calibration Template

    DEQX User Manual O RE OPEN A CALIBRATION TEMPLATE Calibration templates are stored in the project file. Any edits to a calibration template are saved when the project is saved. There are two ways to open an existing calibration template for viewing: 1.

  • Page 65: Subwoofer Measurement And Calibration

    UBWOOFER EASUREMENT AND ALIBRATION The approach taken to measure and calibrate subwoofers is different than for speakers. Instead of using windowing, a nearfield measurement is taken so that the direct sound from the subwoofer dominates the room effects. (See page 121 for an alternative but more advanced approach to low-frequency measurement that can be used with subwoofers.) If you are not using subwoofers, skip this chapter.
  • Page 66 DEQX User Manual Once the microphone is in place, follow the measurement procedure given for speakers (starting on page 47), but with the following specific differences. Screen 3. Select “Subwoofer” for the Configuration parameter. For Source, select the longest sweep available.

  • Page 67: Calibrate The Subwoofer

    Screen 3. If you did not jump directly from the measurement wizard to the calibration wizard, select “Subwoofer” for the Speaker Config parameter. Screen 4. Select or confirm the measurement to use for subwoofer calibration (DEQX- Cal will only list measurements here that were taken with the Configuration parameter in the speaker measurement wizard set to “Subwoofer”):...
  • Page 68 DEQX User Manual Limits tab. Set the frequency range so that the subwoofer extends from its lowest useful frequency to significantly past the intended crossover frequency. This example uses a frequency range from 25 Hz to 250 Hz: The frequency range limits may be easier to set if the Auto rescale option is turned off.

  • Page 69: Configuring The Deqx

    HAT IS A CONFIGURATION A configuration is a set of data that is created in DEQX-Cal and then uploaded to the DEQX to control its audio processing. It consists of: 1.

  • Page 70: Create A Configuration

    REATE A CONFIGURATION Start the configuration wizard by clicking on the Configure button in the Wizard toolbar or by selecting “Configure DEQX” from the Tools menu. The wizard will take you through a series of screens. To proceed through them, select the necessary options on each screen and click the Next button.

  • Page 71: The Configuration Window

    Chapter 9. Configuring the DEQX HE CONFIGURATION WINDOW The configuration window contains a diagrammatic representation of the speakers, with either one or two subwoofers. By default, all speakers in each profile of a new configuration are disabled, as indicated by the labels “Left - (Disabled)” and so on.
  • Page 72 DEQX. See page 79. Read EQ from DEQX This button reads room EQ settings for all profiles from the DEQX into the configuration. See page 102. Open Template This button opens the calibration template that created the correction filters loaded into the selected profile.

  • Page 73: The Filter Properties Dialog

    Chapter 9. Configuring the DEQX ILTER ROPERTIES DIALOG The filtering applied to each individual speaker is set in its Filter Properties dialog, opened by double-clicking on the speaker (or subwoofer) icon. It contains four tabs: 9.4.1 Main Filter tab This tab selects the main correction filter (if any). There are four options: Use a correction filter for this loudspeaker Select this option if you have generated a correction filter for the speaker.

  • Page 74: Limit Filters Tab

    DEQX User Manual Use a crossover filter for this loudspeaker only This option is available only in the bi-amp and tri-amp speaker configuration modes. See page 122. Bypass correction for this loudspeaker, but still use limit filters The speaker output is enabled but no correction will be applied to it. You can still set limit filters (high pass and low pass filters) on the Limits Filters tab.

  • Page 75: Create A Profile With No Correction

    Chapter 9. Configuring the DEQX OPY FILTER SETTINGS BETWEEN SPEAKERS To copy filter settings from one speaker to another, you can use drag and drop. For example, to copy the filter settings from the left speaker to the right speaker: 1.

  • Page 76: Create A Correction Profile

    DEQX User Manual REATE A CORRECTION PROFILE This example profile will be set up to play audio to a pair of main speakers, with correction filters applied. 1. Select Profile 1 from the toolbar: 2. Open the Filter Properties dialog of the left speaker.

  • Page 77: Add A Subwoofer Or Subwoofers

    Chapter 9. Configuring the DEQX DD A SUBWOOFER OR SUBWOOFERS If you are using a subwoofer or subwoofers, add limit filters to implement a crossover between the subwoofer and the main speakers. (The following steps assume that Profile �� and Profile 1 have been set up as described on the previous two pages.) 1.
  • Page 78 DEQX User Manual Profile 1 must be set up in the same way, but with the correction filter for the subwoofer added. 1. Select Profile 1 from the toolbar: 2. Set up limit filters as described on the previous page.

  • Page 79: Upload The Configuration To The Deqx

    Once you have checked the configuration over, click the Save All to DEQX button. DEQX-Cal will package up the filters and other data for all four profiles and upload them to the DEQX. A progress dialog keeps you informed: Now save the project.

  • Page 80: T O Re - Open A Configuration

    1. By using the configuration wizard. Click the Configure button to start the wizard. On Screen 2, select the option “Load an existing DEQX configuration.” Select the configuration that you wish to load from the pane underneath, and click Finish.

  • Page 81: Room Measurement

    To correct for the effects of the room, the DEQX uses parametric EQ, described in Chapter 12. As a starting point for room EQ, a room measurement is necessary – that is, the response of the speakers (and subwoofers) when measured from the listening position.

  • Page 82: Room Measurement Setup

    DEQX User Manual 10.1 OOM MEASUREMENT SETUP In Chapters 6 and 8, the speaker, subwoofer and microphone were positioned in order to minimize the effect of the room on the measured response. Now that the speakers and subwoofers have an accurate, calibrated response, it is time to measure them together with the full effect of the room.

  • Page 83: Start The Room Measurement Wizard

    Chapter 1o. Room Measurement 10.2 TART THE ROOM MEASUREMENT WIZARD Start the room measurement wizard by clicking on the Measure Room button in the Wizard toolbar or by selecting it from the Tools menu. The wizard will take you through a series of screens. To proceed through them, select the necessary options on each screen and click the Next button.
  • Page 84 DEQX User Manual 96k Measurement If this box is checked, the DEQX runs the measurement at a 96 kHz sample rate. DEQX recommends leaving this box checked for all measurements. Include parametric filters If this box is checked, the DEQX includes the effect of all parametric EQ filters (room EQ and the three-band Preference EQ set by the DEQX Remote).

  • Page 85: Set Location And Speakers To Be Measured

    Chapter 1o. Room Measurement 10.4 ET LOCATION AND SPEAKERS TO BE MEASURED Screen 4. Select the speakers and subwoofers to be measured. Shown below is the screen for the “single amp with optional mono subwoofer” speaker configuration mode. (If you have not enabled the subwoofer, it will display as “Sub (Disabled)” and be deselected by default.) Usually, you will run the room measurement on all enabled outputs.

  • Page 86: Run The Measurement

    DEQX User Manual 10.5 UN THE MEASUREMENT Screen 6. DEQX-Cal will upload the test signal to the DEQX, as shown by the “Initializing DEQX” indicator. When the indicator changes to “Playing test signal,” adjust the measurement signal level as described on page 50. For a room measurement, however, the input level should typically be peaking in the range of 75–85 dB.
  • Page 87 To proceed with subwoofer integration or room EQ now, leave the box “View room measurement in IO Manager / parametric EQ” checked and click Finish. (This is a convenience feature to take you directly to the Equalizer tab of the DEQX Control Panel.) To assess the initial room measurement as described on pages 89 and 90, uncheck “View room measurement in IO Manager / parametric EQ”...

  • Page 88: T O Open Existing Room Measurements

    DEQX User Manual 10.6 O OPEN EXISTING ROOM MEASUREMENTS There are three ways to open existing room measurements: 1. Using the room measurement wizard. Click the Measure Room button and on Screen 2, select the option “Load an existing room measurement.” In the pane underneath, select the measurement or measurements to open.

  • Page 89: Assess The Initial Measurement

    With a DEQX’ capability to linearize the speaker/subwoofer response and address room modes, the optimum speaker and listening positions are often those that tend to excite room modes more. The peaks can be addressed by the DEQX, with a better end result and less risk of overdriving amplifiers.

  • Page 90: Subwoofer Location

    DEQX User Manual 10.7.2 Subwoofer location If a subwoofer or subwoofers are used, the same principle applies. If possible, choose subwoofer locations that enhance bass output. Often, one or both corners behind the speakers will work well. The example below shows the response of a subwoofer at two different locations in the room.

  • Page 91: Subwoofer Integration

    UBWOOFER NTEGRATION To integrate subwoofers means to ensure that they are correctly time-aligned with the main speakers and matched in level. While this manual presents subwoofer integration before room EQ, it is also possible to do it afterward once you are familiar with the operations involved.

  • Page 92: Level Matching

    DEQX User Manual 11.2 EVEL MATCHING To determine level adjustments, the Scale parameter of each plot (lower right of the window) will be adjusted to visually equalize the level of all plots. As a starting point, you can use the Normalize to 0 dB button. Deselect the subwoofers (so only the speaker plots are displayed) and click on Normalize to 0 dB.

  • Page 93: Calculate Gain Adjustments

    Chapter 11. Subwoofer Integration For example, the plot below shows the left speaker in green, the subwoofer before adjustment in dashed red, and the subwoofer after adjustment in solid blue: 11.2.3 Calculate gain adjustments The gain adjustments are calculated from the Scale values in the plot selector. Here is an example of a set of scale values after adjusting as described above: To calculate the gain adjustments, assign the plot with the highest Scale the value ��, and then calculate the gain adjustment for the others using this formula:...

  • Page 94: Time Alignment

    DEQX User Manual 11.3 IME ALIGNMENT Time delays between the speakers and subwoofers are calculated using their impulse responses. The delay that needs to be added to speakers or subwoofers depends not only on their physical distance from the listening position but also the delay in the filters that have been applied to them.

  • Page 95: Determine Subwoofer Delay

    Chapter 11. Subwoofer Integration Right-click on the plot and select “Markers” then “Vertical.” Place one of the markers at the impulse response peak. In this example, the delay of the speaker is 22.3 ms: 11.3.2 Determine subwoofer delay Open the measurement of each subwoofer as described above, and click the Time button to display its impulse response.

  • Page 96: Update The Configuration

    Filter Properties dialog. On the Time/Level tab, set the calculated gain adjustment for that speaker or subwoofer: Click OK to close the dialog. 4. Click on Save All to DEQX. 5. Save the project. 11.5 MEASURE THE ROOM Before proceeding with room EQ in the next chapter, redo your room measurement.

  • Page 97: Room Eq

    The DEQX uses parametric equalization (EQ) to correct for the effects of the room. Room EQ can be applied anywhere in the frequency range, but is typically most effective in the modal region (below 200 to 300 Hz, depending on the room).

  • Page 98: How To Use Manual Eq

    DEQX User Manual 12.1 OW TO USE MANUAL To add an EQ control point, right-click on the plot and select “Add Point” from the menu, or click the Add Point button in the chart toolbar. Then click on the plot display area.

  • Page 99: Tips For Manual Room Eq

    Chapter 12. Room EQ Gain The gain of the filter band in dB. (Positive is boost and negative is cut.) As a general rule, gains greater than 6 dB should be used with caution, as doing so may require substantial additional amplifier power. The width of the filter band.

  • Page 100: How To Use Autoset Eq

    DEQX User Manual 12.2 OW TO USE UTOSET The Autoset EQ feature provides a calculated starting point for further manual EQ adjustments. It will aim for “minimal disturbance” by creating narrow filters and choosing conservative gains. If multiple plots are selected, it will only make corrections that have the same effect on all measurements.

  • Page 101: Fine - Tune Your Results

    Once you have set up an initial EQ curve, play music (or movies) through the DEQX and adjust the control points to obtain the best audible result. Small changes can make quite a difference, so listen to a variety of different tracks.

  • Page 102: Update The Configuration

    EQ to. 3. Click the Read EQ from DEQX button: 4. The EQ points for all four profiles will be downloaded from the DEQX. On the Configuration tab, the parameters of the EQ filter bands will be shown numerically (below left).

  • Page 103: Copying Room Eq Filters

    Chapter 12. Room EQ OPYING ROOM FILTERS Parametric room EQ filters can be copied between profiles using cut-and-paste operations. For example, to copy room EQ settings from Profile �� to Profile ��: 1. Click on the Profile �� selector button. 2.

  • Page 104: Using Multiple Room Measurements

    DEQX User Manual SING MULTIPLE ROOM MEASUREMENTS While the central position is generally a good indicator of the overall response around the listening area, multiple measurements can be used to refine your EQ, especially if the listening area is large.

  • Page 105: Active Multi-Way Speakers

    ULTI PEAKERS When used in the bi-amp and tri-amp speaker configuration modes, the DEQX becomes the heart of an active speaker, with each driver being driven by a dedicated amplifier channel. The bi-amp and tri-amp speaker configuration modes are supported by the HDP-4, HDP-5, and HDP-Express II.

  • Page 106: Active Speaker Design Considerations

    There are many design considerations when implementing an active speaker: raw driver response (both on-axis and off-axis), driver sensitivity, baffle size and shape, power handling versus frequency vs crossover slope, and so on. With a DEQX at hand, the designer may make different choices than when designing a passive speaker.

  • Page 107: Active Two-Way Speaker

    The following sections describe the main active speaker configurations as well as hybrid active-passive configurations. Take careful note of the output connections (L1 etc.) on each diagram. (For configurations using more than one DEQX, see Chapter 14.) 13.1.2 Active two-way speaker Figure 5 shows the physical connections for an active two-way speaker.

  • Page 108: Active Three-Way Speaker

    DEQX User Manual 13.1.3 Active three-way speaker Figure 6 shows the physical connections for an active three-way speaker. The DEQX can use two different speaker configuration modes: Tri-amp The tri-amp speaker configuration mode is the most demanding of accurate measurements. The reflection-free time window must be long enough that correction can be done to well below the woofer-mid crossover frequency.

  • Page 109: Hybrid Active-Passive Speakers

    Hybrid active-passive speakers With speakers that bring out separate internal crossover networks to the binding posts, the DEQX can be used to implement a hybrid active-passive speaker. The existing passive crossover can be left untouched to split the frequency range; alternatively, the DEQX can be used to override the passive crossover (with some limitations).

  • Page 110: Measuring Multiple Drivers

    DEQX User Manual 13.2 EASURING MULTIPLE DRIVERS Each driver of an active speaker is measured in turn, starting with the woofer. Measurement technique for the bi-amp and tri-amp configuration modes generally needs to be better than for single amp mode. A longer reflection-free time window will...
  • Page 111 The woofer is the default, but a different driver can be selected by clicking on its radio button. This will result in a short pause while a new test signal is uploaded to the DEQX. The test signal will then resume from the selected driver.

  • Page 112: Importing Measurements

    DEQX User Manual Screen 7a: If the option “Display prompt between drivers” was selected, the following prompt appears after the woofer and midrange measurements. Move the microphone to the correct location for the next driver, then click OK. Screen 8: After the tweeter measurement completes, you can accept the measurement or retry.

  • Page 113: Calibrating An Active Speaker

    Chapter 13. Active Multi-way Speakers 13.4 ALIBRATING AN ACTIVE SPEAKER Calibration proceeds in a similar manner to Chapter 7, with specific differences noted here. Screen 3. Choose “Bi amp” or “Tri amp.” When the Calibration window opens, it will be seen that there is an additional tab, Crossovers.

  • Page 114: Smoothed Measurements Tab

    DEQX User Manual 13.4.2 Smoothed Measurements tab Two or three plots will be visible, being the anechoic frequency response of each driver. Set the smoothing as described on page 57. 13.4.3 Crossovers tab There are quite a number of plots on this tab, so you may find it easier to work with if you selectively turn them off and on (in the plot selector underneath).
  • Page 115 The choice of crossover frequency and slope is a trade-off between driver on-axis and off-axis response, distortion, excursion limits, and other potential driver issues such as resonance or ringing. DEQX recommends a slope between 48 and 96 dB/octave for most speakers. Higher slopes can be auditioned by creating additional correction sets.

  • Page 116: Limits Tab

    DEQX User Manual Time align individual drivers This option causes the DEQX to adjust the filters so that the sound wave from the two drivers arrives at the listener at the same time. It should always be turned on. Never turn off the crossover for a fully active speaker. Distortion and possible damage to one or more drivers is the likely result if the speaker is misconfigured.

  • Page 117: Configuring An Active Speaker

    Chapter 13. Active Multi-way Speakers 13.5 ONFIGURING AN ACTIVE SPEAKER Configuration proceeds in a similar manner to Chapter 9, with specific differences noted here. In the configuration wizard, select the appropriate bi-amp or tri-amp configuration: 13.5.1 Correction filters for speakers In the configuration window, open the Filter Properties dialog box for the left speaker.

  • Page 118: Correction And Limit Filters For Subwoofers (Two-Way)

    Chapter 8, and configure limit filters as described on pages 77 and 78. After uploading the configuration to the DEQX (“Save All to DEQX”), you can then perform room measurement, subwoofer integration, and room correction as described in Chapters 10 through 12.
  • Page 119 Chapter 13. Active Multi-way Speakers It is not required to use linear-phase filters for the woofer-mid crossover. At lower frequencies, the delay of linear-phase filters increases significantly, so a Linkwitz-Riley filter may be preferable, either to avoid video sync issues or because the Max Delay limit is reached with a linear phase filter (see below).

  • Page 120: Viewing Correction And Limit Filters

    This does not happen automatically when the woofer is measured and calibrated separately.) One effective way to make this adjustment is to complete configuration of the DEQX, then run a room measurement. To improve the quality of this measurement, locate the microphone 1 to 2 meters (3 to 6 feet) from the speaker and an equal distance from the woofer and midrange.

  • Page 121: Woofer Calibration With An In - Room Measurement

    Configuration Load the correction filters into the configuration and upload the configuration to the DEQX. Then perform an integration step using the procedure described in Chapter 11 to set the levels and delays of the woofer and the mid-tweeter. The example below shows the Filters tab after configuring the three-way speaker. Note that the curves for the left and right woofers are different (compare to the example on page 120) and account for room response variations between left and right woofers.

  • Page 122: Configuring An Active Speaker Without Correction

    DEQX User Manual 13.7 ONFIGURING AN ACTIVE SPEAKER WITHOUT CORRECTION An active speaker can be configured without using correction filters. This is a basic form of crossover that doesn’t take into account the measured anechoic response of the drivers. It is useful for quick prototyping, to simulate passive crossovers, or in situations where conditions are not conducive to accurate anechoic measurements.

  • Page 123: Subwoofer Integration For A Three - Way Speaker

    One very effective method of adding subwoofers to a three-way speaker is to chain a slave DEQX unit, as described in Chapter 14. Even without that, however, subwoofers can still be integrated effectively, provided that the woofer can be driven with a full-range signal at power (that is, without a high pass filter) and the subwoofer has an inbuilt low pass filter.

  • Page 124: Advanced Configuration Options

    The Time/Level tab has adjustments for delay and gain. These values apply to the whole “speaker” – that is, both drivers in a bi-amp configuration, or all three drivers in a tri-amp configuration. (The delay and gain of individual drivers cannot be set here because DEQX-Cal calculates them when creating the correction/crossover filter.)

  • Page 125: Using Multiple Deqx Units

    ULTIPLE NITS Multiple DEQX units can be combined to build more complex active speakers, as well as multichannel systems for home theater. A single master DEQX unit can control up to nine slave DEQX units for volume and profile selection.

  • Page 126: Multi - Amp Stereo Configurations

    14.2 ULTI AMP STEREO CONFIGURATIONS Two DEQX units can be used to create an active speaker of up to 5-way, or 4-way with mono or stereo subwoofers. The master must be an HDP-4 or HDP-5 (these two models are the only ones with a Digital Thru output). The slave can be a PreMATE, HDP-Express II, or HDP-4.

  • Page 127: Figure 9. Multi-Way Active Speaker With Master And Slave Deqx

    When measuring, calibrating, and configuring the two DEQX units, it is easiest to use a single project for both units. It is not possible to connect both DEQX units to the computer at the same time, so simply reconnect the USB cable to the unit being worked on.

  • Page 128: Multichannel Or Home Theater Configurations

    14.3 ULTICHANNEL OR HOME THEATER CONFIGURATIONS Multiple DEQX units can be slaved in a multichannel or home theater system. All slave units are set to a fixed input (usually one of the analog inputs) and have audio provided from a multichannel decoder or A/V processor. (The Digital Thru of the master is not used in this type of system.)

  • Page 129: Deqx Control Panel Reference

    At the left of the Control Panel is a strip that displays the master volume slider and profile selectors. The status indicator at the top is green if DEQX-Cal detects connection to the DEQX. It turns red if clipping is detected (page 135).

  • Page 130: Io Manager

    DEQX User Manual 15.1 IO M ANAGER The IO Manager is the real-time control interface to the connected DEQX unit. It is selected by the IO Manager tab at the bottom of the DEQX Control Panel. 15.1.1 Input Select The main input source buttons are the same as the DEQX Remote.

  • Page 131: Inputs

    Chapter 15. DEQX Control Panel Reference 15.1.2 Inputs The input meters show the level of the selected input. Levels are displayed relative to full scale input, so “��” is full scale input, “20” is 20 dB below full scale input, and so on.

  • Page 132: Outputs

    DEQX User Manual 15.1.3 Outputs The output meters show the level of the respective output channels. Levels are displayed relative to full scale output, so “��” is full scale output, “20” is 20 dB below full scale output, and so on.
  • Page 133 Chapter 15. DEQX Control Panel Reference Solo Only the output channels with “S” pressed will play. Use this to select a single speaker, subwoofer or driver to check for correct connections. Or by selecting a pair of speakers or drivers and playing a mono signal, correct polarity can be checked (see “Polarity”...

  • Page 134: Setup

    48V phantom power.) Digital Output Setup Clock Source This drop-down menu is to support DEQX legacy products with an external word clock input. For current generation products, leave this set to “Auto.” Output Selection This drop-down menu is to support DEQX legacy products. For current generation...

  • Page 135: Status

    Chapter 15. DEQX Control Panel Reference Digital Upsample This option is to support DEQX legacy products. For current generation products, this setting is effectively always on. Analog 96 kHz This option is to support DEQX legacy products. For current generation products, this setting is effectively always on.

  • Page 136: System

    DEQX User Manual 15.1.6 System This area provides system status and diagnostic information. Provide this information to DEQX Support in the event of a trouble-shooting request.

  • Page 137: Equalizer Tab

    5. Fine-tune EQ settings by listening. 6. Confirm EQ with another room measurement. 7. Open the configuration and download the EQ settings from the DEQX (“Read EQ from DEQX”). 8. Upload the configuration back to the DEQX (“Save All to DEQX”).

  • Page 138: Configuration Tab

    This tab cannot be used to modify the configuration. (To modify the configuration, open the configuration window and update it as described on pages 73 to 79. Then click the Save All to DEQX button to upload the updated configuration to the DEQX.) 15.4...

  • Page 139: Data Viewer Reference

    IEWER EFERENCE All measurements taken with the DEQX can be viewed using the data viewer. This window can also be used to view correction filters. The data viewer has been shown by example in earlier chapters of this manual. This chapter describes its capabilities in detail.

  • Page 140: T O Open Measurements With The Viewer Wizard

    DEQX User Manual 16.2 O OPEN MEASUREMENTS WITH THE VIEWER WIZARD The viewer wizard makes it easy to open multiple measurements at once. Start the wizard by clicking on the Viewer button in the Wizard toolbar, or by selecting it from the Tools menu. The wizard proceeds through three screens, as follows: Screen 1.

  • Page 141: The Data Viewer Window

    Chapter 16. Data Viewer Reference 16.3 HE DATA VIEWER WINDOW The data viewer window displays any number of measurement plots. The screenshot below is annotated with the main areas of this window: the viewer toolbar, the plot display area, and the plot selector. If the plot selector is not visible, click on the bar at the bottom of the window and drag it upward to expose the plot selector: To add more measurements to an open data viewer, drag and drop them from the...

  • Page 142: Operating On Measurements

    DEQX User Manual 16.4 PERATING ON MEASUREMENTS The chart toolbar, viewer toolbar, and plot selector provide a comprehensive set of functions for viewing and manipulating measurement plots. To select individual plots for display: Click on the checkboxes in the Show column of the plot selector.
  • Page 143 Chapter 16. Data Viewer Reference To create a summed plot: Select the plots to be summed and click the Sum button. (See page 104 for an example.) To zoom in and out on a plot: Click on the “+” magnifying glass icon in the chart toolbar.

  • Page 144: Viewing The Impulse Response

    DEQX User Manual To add markers to the plot: Right-click on the plot display area, open the “Markers” sub-menu, and select either “Vertical” or “Horizontal.” The markers can then be dragged to the desired location. To change plot axis limits: The “+”...

  • Page 145: Project Explorer Reference

    ROJECT XPLORER EFERENCE The project explorer is used to navigate and manage a project. Various ways of using the project explorer have been described in earlier chapters. This chapter provides a more complete reference. Note that it is not always necessary to use the project explorer. The various wizards provide the ability to create and open measurements, calibration templates and configurations without using the explorer.

  • Page 146: Project Folders

    To open a folder, click on the “+” icon or double-click on its name. To close it, click on the “−” icon or double-click on its name. In the following screenshots, the folders created by DEQX-Cal are shown highlighted. SPEAKERS This folder contains items identified by the combination of speaker manufacturer, model, and serial number.
  • Page 147 Within each room is the list of measurement positions, each of which contains measurements for the speakers or drivers. PDC CONFIGURATIONS This folder contains DEQX configurations. Each configuration contains four profiles, with default names as shown below.

  • Page 148: Explorer Operations

    DEQX User Manual 17.3 XPLORER OPERATIONS Right-clicking on any folder or item in the project explorer will open a context-sensitive menu that provides a number of common operations. The possible operations will differ by the folder or type of item.

  • Page 149: Working With Multiple Projects

    – that is, a project containing only what is needed to upload a configuration to a DEQX in a different physical location, without all of the other measurements and templates that may have been created during the design process.
  • Page 150 DEQX User Manual There are two ways to copy data between projects: Room measurements. Drag and drop a “room” (the top level item) from the ROOM MEASUREMENTS folder of one project onto the ROOM MEASUREMENTS folder of another project. All of the measurement positions and the individual measurements underneath them will be copied over.

  • Page 151: Options And Customization

    PTIONS AND USTOMIZATION DEQX-Cal has many configuration options that control its behavior and appearance. This chapter provides a reference for them. 18.1 PTIONS DIALOG The Options dialog is opened from the Tools menu. After changing any options, click Apply to make them take effect without closing the dialog, or OK to make them take effect and close the dialog.
  • Page 152 The measurement system that DEQX-Cal uses for recorded distances. Name-Library File The location and name of the file that DEQX-Cal uses to store names added by the user (manufacturers, speaker models, measurement locations, and so on). This must never be changed except on specific instruction from DEQX Support.

  • Page 153: Chart Tab

    18.1.2 Chart tab This tab is used to customize elements of the various charts in DEQX-Cal, such as the title, labels, and grid lines. To make changes to all charts, leave the “All Same” option checked. Uncheck it and use...

  • Page 154: Deqx Tab

    (see page 143). The right side of the dialog box is used to set colors and fonts. To change colors and fonts specifically for DEQX-Cal, uncheck “Sync with system colors,” then click the Font or Color button to make the desired changes.

  • Page 155: Customize Dialog

    Chapter 18. Options and Customization 18.2 USTOMIZE DIALOG The Customize dialog is opened from the Tools menu. Changes made in this dialog take effect immediately. 18.2.1 Commands tab Use this tab to add commands to toolbars or menus. (For examples, see page 158.) To add a command: Locate the desired command by selecting the category on the left, and then the command on the right.

  • Page 156: Toolbars Tab

    DEQX User Manual 18.2.2 Toolbars tab Use this tab to create and delete toolbars. To create a new user-defined toolbar, click New and enter the toolbar name. It will appear as a separate toolbar window (below right). Then: 1. Go back to the Commands tab and drag and drop commands from it onto the new toolbar window.

  • Page 157: Menu Tab

    18.2.4 Menu tab Use this tab to customize the context menus that appear in various places in DEQX-Cal when the right mouse button is clicked (such as the project explorer and data viewer). To edit a context menu, select it with the drop-down on the right-hand side.

  • Page 158: Adding Text Labels To The Configuration Toolbar

    The toolbar of the configuration window will display as shown below (the image shows the toolbar split for space reasons, but in DEQX-Cal it will be a single row). Note: if you are an advanced user and have more than one configuration in your project, this will need to be done separately for each of them.

  • Page 159: Specifications

    USB Audio Asynchronous USB Audio Class 2, 24-bit, 44.1 to 192 kHz. Driver not required for Mac OS X; XS-1 driver supplied for Microsoft Windows. (*3) IGITAL AUDIO OUTPUTS HDP-4, HDP-5 PreMATE, PreMATE+ HDP-Express II Digital Thru 24-bit, 96 kHz —...
  • Page 160 Mains input voltage HDP-5, PreMATE, PreMATE+, HDP-Express II: 100 – 240 V AC, 50 – 60 Hz, auto-select HDP-4: 100 – 120 or 220 – 240 V AC, 50 – 60 Hz, switch- selectable on rear panel Fuse rating 100 – 120V: 2 Amps; 220 – 240V: 1 Amp...

  • Page 161: Usb Audio

    USB Audio at all standard sample rates from 44.1 up to 192 kHz. OS X Driver installation is not required for OS X. Connect the DEQX USB Audio port to your Mac using the supplied cable. To set the DEQX as the default system audio output device, open System Preferences, click on Sound, select the Output tab, and then select xCORE USB Audio 2.0 in the list...
  • Page 162 (http://deqx.com/upgrades.php) for the latest version of the driver. To install the driver, first connect the USB Audio input of the DEQX to a USB port on your computer using the supplied cable. Turn on the DEQX with the rear panel switch, wait a few seconds and then take it out of standby by pressing the I/O button on the front panel.

  • Page 163: Networked Streaming Audio

    To enable the DEQX as a networked audio destination, connect an Ethernet cable from your network router to the Ethernet port on the rear panel. Then select the “Internal” input on the front panel touchscreen or press the “Auto” button on the DEQX Remote. JRiver Media Center JRiver Media Center (https://www.jriver.com/) is a comprehensive audio playback and...
  • Page 164 The DEQX HDP-5 and PreMATE+ are Roon Ready network players. To send audio from Roon to your DEQX, open Roon’s Audio Setup panel. Scroll down, and you will see “Deqx DeqxPre” listed in the “Networked” section: Click the Enable button.

  • Page 165: Analog Gains

    RCA-XLR adapter. The DEQX has a 6 dB insertion loss to provide headroom for equalization. Therefore, with a bypass profile (page 75), full scale input gives half the listed output voltage. To obtain the listed...

  • Page 166: Table 5. Analog Input Sensitivity Jumper Settings

    DEQX User Manual UMPER SETTINGS Table 5 and Table 6 list the full scale input or output voltage for each jumper position. The highlighted row indicates the default setting as shipped from the factory. Table 5. Analog input sensitivity jumper settings...

  • Page 167: Firmware And Eeprom

    O UPGRADE THE FIRMWARE NORMAL MODE Install and run the latest version of DEQX-Cal. With the DEQX connected to the PC, drop down the Tools menu and select “Upgrade DEQX firmware from file...” The next screen will show the selected firmware file. Confirm that this is the same file as listed in Table 7 (on the next page), then click OK to proceed.

  • Page 168: Table 7. Firmware Upgrade File By Deqx Model

    DEQX Mate, PreMate, HDP-Express II, HDP-4 eqf2.pdc PreMate+, HDP-5 eqf3.pdc To exit safe mode, turn the DEQX off using the rear panel switch, and then turn it on again (without pressing any front panel buttons). EEPROM O RESET THE In rare cases, it may be necessary to reset the EEPROM in order to restore normal function of the DEQX.

  • Page 169: Troubleshooting

    4. Connect the PC to the DEQX with the supplied USB cable. 5. Quit and restart DEQX-Cal. 6. Power cycle the DEQX (turn power off with the rear panel switch, wait a few seconds, then turn it on again). 7. Restart the Windows PC.
  • Page 170 FAILS 1. Try the operation (e.g. “Save All to DEQX”) again. 2. If it fails again, save the project and quit DEQX-Cal. Restart DEQX-Cal and retry the operation. 3. Proceed through the steps given on page 169 for “DEQX-Cal does not detect a connected DEQX unit.”...

  • Page 171: Index

    NDEX group delay ........ 13, 60, 159 96 kHz ......14, 48, 72, 84, 135 home theater .........128 AC mains power ....... 22, 160, 168 active speaker ..12, 126–27, Chapter 13 impulse response ..56, 67, 90, 113, 144 analog gain ........
  • Page 172 DEQX User Manual subwoofer ........... 65 verification .......... 62 reflections ..........57 viewing ........Chapter 16 remote control....125, 152, Chapter 4 menu ..........40, 41 rename ......... 63, 64, 80, 148 meters rescale ..........59, 68 front panel........... 29 room input..........

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PremateHdp-5Hdp-express ii

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