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miniDSP 2x4 HD Manual

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Table of Contents
miniDSP 2x4 HD
Product Overview
DISCLAIMER/WARNING
WARRANTY TERMS
Typical applications
Dirac Live upgrade
Speci cations
Software Installation
System requirements
Windows
macOS
Download the miniDSP software
Install the miniDSP software
Install on macOS
Install on Windows
The miniDSP Device Console
Finding connected devices
Finding network-connected devices
Connecting to a device
Using template devices
Settings
Device controls
Volume and mute
Input sources
Using presets
Firmware updates
Convert to DDRC-24
Basic Operation
Front and rear panels
Input panel

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Summary of Contents for miniDSP 2x4 HD

  • Page 1 Typical applications Dirac Live upgrade Speci cations Software Installation System requirements Windows macOS Download the miniDSP software Install the miniDSP software Install on macOS Install on Windows The miniDSP Device Console Finding connected devices Finding network-connected devices Connecting to a device...
  • Page 2 Default audio device USB Audio from 2x4 HD to computer Windows 11 Set sample rate USB Audio from 2x4 HD to computer ASIO miniDSP UAC2 control panel Remote control Using the miniDSP remote Android/iOS control app Signal Flow Signal ow Input Channels...
  • Page 3 Overview Channel label Signal routing CROSSOVER Time delay Gain adjustment Invert Mute Compressor Current RMS level, level meter DSP Reference Parametric EQ Overview Editing lters Disabling individual lters Filter mode Basic mode Frequency Gain Filter type Keyboard and mouse operations Jumping between channels Linking channels Reset to default...
  • Page 4 Filter type Keyboard and mouse operations Jumping between channels Linking channels Hiding channels Advanced mode Setting biquads for the crossover block Biquad design software FIR Filtering FIR ltering overview The FIR lter pane Enabling and disabling the lter Allocating taps Loading lters File mode Manual mode...
  • Page 5 6. Migrate your con guration presets Troubleshooting and support No sound during playback Check the input meters Check the output meters Check output connections Some outputs produce sound and some do not Strange soundstage USB-related issues Obtaining support...

  • Page 6: Product Overview

    Product Overview The miniDSP 2x4 HD is an extremely compact and cost-effective stereo-input, four-channel output audio processor for active crossovers, subwoofer integration, multi-subwoofer management and other audio processing applications. It features stereo analog inputs, TOSLINK optical digital audio input, and USB audio streaming.

  • Page 7: Warranty Terms

    WARRANTY TERMS miniDSP Ltd warrants this product to be free from defects in materials and workmanship for a period of one year from the invoice date. Our warranty does not cover failure of the product due to incorrect connection or installation, improper or undocumented use, unauthorized servicing, modi cation or alteration of the unit in any way, or any usage outside of that recommended in this manual.
  • Page 8 Figure 1. miniDSP 2x4 HD as preamp with subwoofer integration Figure 2 illustrates a similar use of the miniDSP 2x4 HD as a digital preamp, but the output channels have instead been con gured to act as crossover for a pair of active 2-way speakers. Ampli cation can be via a multichannel...
  • Page 9 Figure 2. miniDSP 2x4 HD as preamp and active crossover In Figure 3, the miniDSP 2x4 HD has been used as an accessory in a home theater system, to manage multiple subwoofers. Driven from the A/V receiver's subwoofer output, the miniDSP 2x4 HD can be used to independently adjust gain, delay and parametric EQ of each subwoofer for optimum multi-sub performance.

  • Page 10: Speci Cations

    Dirac Live upgrade The miniDSP 2x4 HD can be upgraded to run stereo (two-channel) Dirac Live® room correction. This requires an additional purchase for the Dirac Live license. You can either purchase the miniDSP 2x4 HD with Dirac Live already activated, or purchase the Dirac Live upgrade at a later time from within the Device Console. Refer to the instructions...

  • Page 11: Software Installation

    If you purchased your 2x4 HD from a miniDSP dealer, you will receive a coupon together with the product. To redeem this coupon, go to this page: Redeem your miniDSP software (https://www.minidsp.com/support/redeem-coupon)
  • Page 12 2. Drag the miniDSP Device Console application icon to your Applications folder. 3. To run the miniDSP Device Console, locate it in the Applications folder and double-click on it. To make it easier to run in future, right-click on its dock icon and select Options -> Keep in Dock.
  • Page 13 The rst time you run the miniDSP Device Console, you may see a Windows Firewall warning such as the one below. Ensure that "Private networks..." is checked and "Public networks..." is not checked. Then click on "Allow access."...
  • Page 14 Info The most recent miniDSP processors require the UAC2 driver to be at least version 5.40. If you have di culty with the UAC2 driver or control panel, use Install USB Audio Driver to install the latest version. Info The Windows installation of miniDSP Device Console is for a single user. If it needs to be run in more than one account...
  • Page 15 The miniDSP Device Console The miniDSP Device Console ("DC") is the new con guration and control software for miniDSP audio processors. It replaces the earlier "plugin" control software. In contrast to the earlier software, Device Console provides: A single software program to control all miniDSP processors...

  • Page 16: Connecting To A Device

    Input 2 Output 1 Output 2 Output 3 Output 4 RMS-Meter (dBFS) RMS-Meter (dBFS) INPUT 1 INPUT 1 INPUT 1 INPUT 1 2x4 HD -14.0 -43.1 INPUT 2 INPUT 2 INPUT 2 INPUT 2 Connection DISCONNECT CROSSOVER CROSSOVER CROSSOVER CROSSOVER...
  • Page 17 If this is the rst time you have used Device Console with your miniDSP 2x4 HD, Device Console will check for an existing preset that was created with the older MiniDSP-2x4-HD "plugin" user interface. If found, Device Console will automatically import it. This is done on a preset-by-preset basis.
  • Page 18 This is done on a preset-by- preset basis: Settings have changed Different settings have been found for 2x4 HD. Would you like to: Possible reasons: * The settings for Preset-1 in the template device has been changed since last time this 2x4 HD was connected.

  • Page 19: Device Controls

    (Windows or macOS). If you choose the System option, you may need to quit Device Console and restart it for the change to take effect. The Install USB Audio Driver feature installs the latest version of the miniDSP UAC2 audio driver. It appears on Windows only. See Installation for more information.

  • Page 20: Input Sources

    To change the volume from within Device Console, drag the slider: Master Volume -41.5 dB To mute the 2x4 HD, press the mute button: While the cursor is over the volume slider, use the mouse scroll wheel to adjust volume. Input sources To select the input source, drop down the selector menu and select the desired input: Input Source Select...
  • Page 21 To import a preset from a le, click the IMPORT button, then navigate to a saved preset le and click Open. The preset will be loaded from the le. If Device Console is currently connected to the miniDSP 2x4 HD, the preset will also be sent to the 2x4 HD.

  • Page 22: Firmware Updates

    Display Versions Refresh DSP Firmware Refresh XMOS Firmware You do not need to use these buttons in normal operation. They are there in case your 2x4 HD has issues or miniDSP Support instructs you to refresh the rmware. Convert to DDRC-24 Dirac Live is an optional upgrade to the miniDSP 2x4 HD.
  • Page 23 Click to display Activation Code for trouble-shooting purpose Step-2: Upgrade to Dirac-Live Please enter the activation key from miniDSP to activate the license User can enter the activation key online if this computer is connected to the Internet. Otherwise, the activation key can be loaded from file.
  • Page 24 Info After you press the Buy Upgrade button, miniDSP Device Console will wait for an acknowledgement from the payment system. If you decide not to proceed with the upgrade, click the back-arrow button near the top left of the purchase screen.
  • Page 25 After activating, the 2x4 HD will restart. When it comes back online, it will appear in the Device Console list of devices as a DDRC-24. The miniDSP 2x4 HD presets will not be converted to the DDRC-24. When reconnecting, you can choose to either restore all presets to their default values or to use existing DDRC-24 presets.
  • Page 26 Conversion to DDRC-24 Apply configurations to DDRC-24 Restore-All to Default / Use existing DDRC-24 configurations. Restore ALL Upgrade and Synchronize Cancel Be sure to use the DDRC-24 version of the manual/help after you have completed the upgrade.

  • Page 27: Basic Operation

    Basic Operation...

  • Page 28: Front And Rear Panels

    Front and rear panels Warning Apply power to the miniDSP 2x4 HD only after all input and output connections have been made. Input panel IN 1 IN 2 TOSLINK 1. Analog inputs. Connect an analog source here using RCA cables. Typically, the left channel is connected to input 1 and the right channel is connected to input 2.
  • Page 29 . Analog outputs. Connect equipment such as a power ampli er and subwoofer using RCA cables. Typically, output 1 is the left channel and output 2 is the right channel. The maximum output voltage is 2.0 Vrms. Warning Apply power to the miniDSP 2x4 HD only after all input and output connections have been made.

  • Page 30: Playing Audio

    Connecting an ampli er and speakers The diagram below illustrates a basic connection of a stereo ampli er and a pair of speakers to the miniDSP 2x4 HD. Since the default settings of the 2x4 HD route the input channels to output channels 1 and 2 with no crossovers...

  • Page 31: Power Amplifier

    Connecting a stereo ampli er and speakers to the miniDSP 2x4 HD Of course, more complex connections are possible using the additional outputs. In that case, the internal processing will need to be set up using the miniDSP Device Console. Refer to the Signal Flow and DSP Reference sections for details.

  • Page 32: Usb Audio

    Note that the signal processing ow is different to "pro audio" interfaces. macOS The miniDSP 2x4 HD is USB Audio compliant, so no drivers need to be installed to play audio on macOS. Open Audio MIDI Setup (in Applications->Utilities) and click on its name in the list on the left-hand side.
  • Page 33 Set sample rate Click on the selector next to Format to bring up the sample rate and bit depth selector. Sample rates up to 192 kHz can be selected: miniDSP Flex 8 DL miniDSP 2x4 HD Default audio device To set the 2x4 HD as the default audio output device, right-click and select "Use this device for sound output":...
  • Page 34 USB Audio from 2x4 HD to computer The miniDSP 2x4 HD sends its four output channels to the computer over USB. Click on the Input button in Audio MIDI Setup to see them. These can be used to monitor or record the output channels of the 2x4 HD:...
  • Page 35 Note: to play USB audio from Windows, the miniDSP UAC2 driver package must be installed rst. Default audio device To set the miniDSP 2x4 HD as the default audio output device, open the Settings app and navigate to the System → Sound page. Select the 2x4 HD with the radio button:...
  • Page 36 2x4n Set sample rate To change the bit depth and sample rate, click on the rightward angle symbol >. Click the selector next to Format to pop up the sample rate menu. Sample rates up to 192 kHz can be selected:...
  • Page 37 2x4n USB Audio from 2x4 HD to computer The miniDSP 2x4 HD sends its four output channels to the computer over USB. These can be used to monitor or record the output channels after DSP processing:...
  • Page 38 2x4n To avoid Windows resampling the outputs from the 2x4 HD, set the sample rate here to the DSP's internal sample rate: 96 kHz.
  • Page 39 Analog recording with miniDSP and ocenaudio (https://www.minidsp.com/applications/advanced-tools/analog-recording-with-minidsp-adc) on our website. ASIO If your audio application supports ASIO® audio drivers, we recommend selecting the miniDSP ASIO Driver in its settings. This typically allows the application to automatically change sample rate. For example, in JRiver Media Center:...
  • Page 40 UAC2 control panel The current settings of the miniDSP 2x4 HD can be viewed by opening the miniDSP UAC2 Control Panel from the Windows Start menu (under the miniDSP Ltd folder). This control panel allows you to view current settings. In addition, it can be used to set buffer size, although we recommend that you leave this setting at the default.

  • Page 42: Remote Control

    Remote control The miniDSP 2x4 HD has the following options for remote control of key runtime functions. Using the miniDSP remote The infrared remote control provided with the 2x4 HD controls all key runtime functions. Standby Has no effect with the 2x4 HD. Mute Mute and unmute audio output.
  • Page 43 With the addition of a miniDSP Wi-DG (https://www.minidsp.com/products/accessories/wi-dg) Wi-Fi to USB bridge, the miniDSP 2x4 HD can be remote-controlled from a phone or tablet running Android or iOS (iPhone/iPad). For more information, see this application note: Using Android / IoS app to control your miniDSP (https://www.minidsp.com/applications/advanced-tools/android-ios-...

  • Page 44: Signal Flow

    Signal Flow...
  • Page 45 4. Each output channel runs a comprehensive set of DSP functions: parametric EQ, crossovers, FIR ltering, level metering, delay, output gain and compressor. The combination of the routing matrix and the crossover blocks on the output channels is what gives the miniDSP 2x4 HD the ability to be used in many different system con gurations.

  • Page 46: Input Channels

    Input Channels Overview The different elements on each control strip are shown here: Channel label Input 1 RMS-Meter Current (dBFS) RMS level -14.0 Level meter Channel gain Gain (dB) Edit parametric EQ settings Mute channel MUTE Channel label Each input channel has a customizable label displayed at the top of the channel strip. To change the label, click on it and type a new label (up to 12 characters).
  • Page 47 The gain of each input channel can be set to a value between ‑72 dB and +12 dB. (0 dB, the default, is unity gain or no change in level.) To set the gain, click on the Gain value of that channel. The gain can be entered by moving the slider or it can be entered numerically.

  • Page 48: Signal Routing

    INPUT 2 In addition to routing, the miniDSP 2x4 HD supports mixing, where input channels can be mixed at different levels to a single output channel. The complete set of routing controls along the top of the output channel strips is therefore also called the "matrix mixer."...

  • Page 49: Routing Examples

    The diagram below shows the connections for a stereo pair of speakers plus a single subwoofer. This is the simplest type of active system, so is a good introduction to the advanced features of the miniDSP 2x4 HD. It is also known as a "2.1"...

  • Page 50: Two-Way Active Speaker

    Input sources Processor Powered Subwoofer No connection (or use for a second subwoofer) Typical connections for subwoofer integration with the miniDSP 2x4 HD The routing for this system is: Left Out Right Out Subwoofer Unused Left In Left In Left In...
  • Page 51 Input sources Processor Right woofer Right tweeter Protection capacitor Typical connections for a two-way active speaker using the miniDSP 2x4 HD The routing for this system is: Left Woof Right Woof Left Tweet Right Tweet Left In Left In Left In...

  • Page 52: Output Channels

    Output Channels Overview Each of the four output channels has a complete "strip" of controls: Output 1 INPUT 1 Signal routing INPUT 2 Edit EQ, crossover CROSSOVER and FIR settings Time delay in ms Delay (ms) Gain (dB) Gain adjustment INVERT Enable invert and mute...
  • Page 53 Channel label Each output channel has a customizable label displayed at the top of the channel strip. To change the label, click on it and type a new label (up to 12 characters). Signal routing Sets the routing from input channels to output channels. See Signal routing.

  • Page 54: Time Delay

    Click on this button to open the FIR ltering window for that output channel. A total of 4096 can be computed. If there are coe cients loaded into the FIR lter, the color of the button changes to yellow. This provides an at-a- glance indication of lter status: There are no loaded There are loaded...
  • Page 55 MUTE MUTED Channel is not muted Channel is muted Compressor Click on this button to open the compressor settings window for that output channel. If the compressor is enabled, the color of the button changes to yellow. This provides an at-a-glance indication of compressor status: COMPRESSOR COMPRESSOR...
  • Page 56 DSP Reference...
  • Page 57 Low Shelf The miniDSP 2x4 HD has 10 parametric EQ lters on each input and output channel. The graph displays the response of each lter in a light color and the combined response of all enabled lters as a heavy line. For example, the curve shown above has a low-shelf boost at 100 Hz, a dip at 500 Hz, and a high-shelf cut at 5000 Hz.

  • Page 58: Filter Mode

    Band 2[579 Hz] -8.7 dB Disabling individual lters All 10 lters are enabled by default. To disable a lter, select it with the row of buttons. Click on the Enable button to turn it off. Filter is enabled Filter is disabled Note that all other lters are still operational unless individually bypassed.

  • Page 59: Filter Type

    Frequency For PEAK lters, this is the center frequency of the peak or dip. For HIGH_SHELF and LOW_SHELF lters, this is the frequency at which the gain is half of the set value. For ALL_PASS lters, this is the center frequency of the phase shift.

  • Page 60: Linking Channels

    2. Clicking in the value eld and typing a new value. Once the focus is in a value eld, you can also change the value with the up and down arrow keys on the keyboard. 3. Move the mouse cursor over the parameter and use the mouse scroll wheel or equivalent gesture on a trackpad. The Tab key will move focus between elds;...

  • Page 61: Reset To Default

    While viewing channel 1, click on channel 3's Link Channel selector Menu OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 OUTPUT 8 Channels No Link Output 2 Output 3 Output 4 Output 5 Output 6 Output 7 Output 8 Link Channel...

  • Page 62: Advanced Mode

    Advanced mode Advanced mode enables custom biquad programming for almost in nite exibility in lter implementation. In this mode, each individual lter to be speci ed by its biquad coe cients. The coe cients must be generated by a design program such as Room EQ Wizard (REW).

  • Page 63: Biquad Design Software

    To load the le, select the Menu switch at the top right and click the LOAD BIQUADS FILE button. The lters are set to advanced mode starting at EQ1. Menu OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 OUTPUT 8...
  • Page 64 The community-developed biquad calculation spreadsheet allows many lter types to be calculated, including notch lters, Linkwitz transforms, and lters with arbitrary Q-factor. Access this spreadsheet here (requires Microsoft Excel): Download zipped spreadsheet from miniDSP.com (https://www.minidsp.com/images/fb les/ les/All_digital_coefs_v1-20101026.zip) Room EQ Wizard (REW) Room EQ Wizard is a free acoustic measurement and analysis tool, available for Windows, Mac and Linux platforms.
  • Page 65 Crossover Crossovers "split" the frequency band to send to different drivers. In a two-way loudspeaker, for example, a low pass lter is used to remove high frequencies from the signal sent to the woofer, and a high pass lter is used to remove low frequencies from the signal sent to the tweeter.

  • Page 66: Crossover Mode

    Output 3 [390 Hz] -15.1 dB Info The channel names on the right hand side may be out of order. This is an unavoidable artifact of the library used to draw the graphs: the graph that displays on top also comes rst in the list. Output 2 Output 1 Output 3...

  • Page 67: Cut-Off Frequency

    BASIC MODE Changing mode will not convert Frequency/Filter-Type to biquads. ADVANCED MODE HIGH-PASS FILTER Enable LOW-PASS FILTER Enable Cut-off Frequency Cut-off Frequency 20000 20000 Filter Type Filter Type Butterworth 24 dB/Octave Butterworth 24 dB/Octave Enable The crossover lters are disabled by default. To enable a crossover lter, click on the Enable switch. Crossover filter is disabled Crossover filter is enabled Cut-off frequency...
  • Page 68 Keyboard and mouse operations Except for lter type, parameters can be edited by: 1. Clicking and dragging on a slider. Once the focus is in a value eld, you can also change the value with the left and right arrow keys on the keyboard, or by using the mouse scroll wheel or equivalent gesture on a trackpad. 2.

  • Page 69: Hiding Channels

    While viewing channel 1, click on channel 3's Link Channel selector Menu OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 OUTPUT 8 Channels No Link Output 2 Output 3 Output 4 Output 5 Output 6 Output 7 Output 8 Link Channel...
  • Page 70 Band Pass Filter (Low+High) Output 1 Output 2 Output 3 Click to hide Output 4 channels Output 5 Output 6 Output 7 Output 8 Frequency (Hz) The crossover settings of channels 1, 2 and 3 can be changed by using the channel selection buttons at the top of the window to jump between them.
  • Page 71 The community-developed biquad calculation spreadsheet allows many lter types to be calculated, including notch lters, Linkwitz transforms, and lters with arbitrary Q-factor. Access this spreadsheet here (requires Microsoft Excel): Download zipped spreadsheet from miniDSP.com (https://www.minidsp.com/images/fb les/ les/All_digital_coefs_v1-20101026.zip) Room EQ Wizard (REW)
  • Page 72 REW and loaded using the Device Console. Room EQ Wizard can be downloaded from: Room EQ Wizard downloads (https://www.roomeqwizard.com/#downloads) For guidance on using this feature, refer to the app note Auto EQ with Room EQ Wizard (https://www.minidsp.com/applications/rew/rew-autoeq-step-by-step)
  • Page 73 FIR ltering allows very complex lters to be constructed, with the aid of suitable design software. These lters can correct for amplitude only ("linear phase lters"), phase only, or a combination or both. These numbers are conventionally referred to as "taps." The miniDSP 2x4 HD can compute a total of 4096 taps. The FIR lter pane Each output channel has an FIR lter bank with a variable number of taps.
  • Page 74 FIR Details (Input 1) Enable FIR Menu BACK Channels INPUT 1 INPUT 2 FIR - Frequency Response 1000 2,000 5,000 10,000 20,000 Frequency (Hz) FILE MODE MANUAL MODE Taps Input Area Usage by Channel Input 1 1024 b0=1 Input 2 1024 b1=0 b2=0...

  • Page 75: File Mode

    Taps are allocated to each block according to the number of loaded taps. The miniDSP 2x4 HD can compute a total of 4096 taps. These can be distributed as you wish across the four output channels, with the limitation that each channel must have 6 or more taps and can have no more than 2048 taps.
  • Page 76 To accept the loaded lter, click APPLY. To cancel the operation, click UNLOAD FIR. Manual mode In Manual Mode, the FIR lter coe cients are pasted directly into the entry box in plain text, as shown below. FILE MODE MANUAL MODE Taps Input Area Usage by Channel Input 1...
  • Page 77 FIR lter design software The lter coe cients must be created with the aid of lter design software. miniDSP does not provide any such software, instead referring you to the many software packages available for this purpose (both freeware and commercial).
  • Page 78 Compressor The compressor reduces the gain of an output channel when the audio signal reaches the level speci ed by the Threshold parameter. The gain of the channel will be progressively reduced as the signal increases above the threshold, according to the Ratio parameter. This can be used to limit the power delivered to speakers and thus reduce the risk of damage from overdriving.
  • Page 79 Two additional parameters control the action of the compressor: the attack time and the release time. These two parameters govern how quickly the compressor activates when the signal level exceeds the threshold, and how quickly it deactivates when the signal level reduces. The optimum settings may need to be tuned by ear. For more information, see the Wikipedia article Dynamic range compression (https://en.wikipedia.org/wiki/Dynamic_range_compression)

  • Page 80: Additional Information

    Additional Information...

  • Page 81: Fcc Class B Statement

    WARRANTY TERMS miniDSP Ltd warrants this product to be free from defects in materials and workmanship for a period of one year from the invoice date. Our warranty does not cover failure of the product due to incorrect connection or installation, improper or undocumented use, unauthorized servicing, modi cation or alteration of the unit in any way, or any usage outside of that recommended in this manual.

  • Page 82: Ce Mark Statement

    Notice: Changes or modi cation not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. CE MARK STATEMENT The miniDSP 2x4 HD has passed the test performed according to European Standard EN 55022 Class B.
  • Page 83 Input sensitivity jumpers The miniDSP 2x4 HD can be set for an analog input sensitivity of 2 Vrms or 4 Vrms. The default as shipped is 2 Vrms. The 4 Vrms setting is useful if a source device produces more than 2 Vrms.
  • Page 84 2 VRMS sensitivity 4 VRMS sensitivity Warn Be sure to position the jumpers correctly on the pins. You may need to use a small pair of pliers to do this.
  • Page 85 Slide the board back into the chassis and refasten the screws. (If you didn't take note of which screw came from where, the "pointy" screw goes between the input RCA jacks.)
  • Page 86 Migrating to DC If you have used the older "plugin" software with your miniDSP 2x4 HD, you will need to perform a one-time migration procedure to use it with miniDSP Device Console. Follow the procedure described below. Please be sure to perform all steps in order.
  • Page 87 Settings Main M enu Discover Devices Network Device Discovery Template Devices Timeout seconds Settings Software Update About Hours Check Interval Enable CHECK NOW Version History Last checked: No updates available at 15:49:29 GMT+1000 (Hong Kong Time) on Fri Aug 19 2022 Color Mode Modes Light...
  • Page 88 Device running a XMOS firmware version 1.25 that is too old to update with Device Console. Please upgrade to version 1.50 or above with the DFU Tool provided by the DC-Migration-Package. Click the 'Download' button to retrieve from miniDSP User Downloads. Decide Later Download (If you do not see this message, you do not need to upgrade the rmware and you can skip ahead to the next step.)
  • Page 89 For macOS, navigate to:       XMOS Firmware ⟩ Firmware_Upgrade_Tools ⟩ Mac Double-click on the miniDSP USB DFU.app program to run it. 3. The rmware update utility will start: 4. Click on Browse and select the rmware le from the XMOS_Firmware folder of the migration pack. It will have a name like "2x4HD_DDRC24_XMOS_v1.50_Up.bin."...
  • Page 90 Device Console. 6. Migrate your con guration presets Presets that were previously loaded into the 2x4 HD using the miniDSP 2x4 plugin will automatically be imported into Device Console. If no existing presets are found, you will be prompted to initialize the presets to defaults when you connect to the 2x4 HD.

  • Page 91: Troubleshooting And Support

    Troubleshooting and support No sound during playback If you get no sound while playing music, double-check the following items in order. Turn off your ampli cation until you get to the step that says to turn it on. . Check the input meters Play a music signal, or pink noise from the REW signal generator.
  • Page 92 Strange soundstage If the soundstage width is narrow, check that you have not summed left and right input channels and routed the sum to left and right speakers. This will result in a mono signal and hence a narrow soundstage. If the soundstage is "weird", check the routing and crossover settings and make sure that left and right channels are consistent.

  • Page 93: Obtaining Support

    Obtaining support If you are experiencing issues with your miniDSP 2x4 HD that are not resolved by this manual and by following the trouble-shooting steps above: 1. Check the miniDSP forums (https://www.minidsp.com/forum/index) to see if this issue has already been raised and a solution provided.