Table of Contents
Related Manuals for miniDSP DDRC-22D
Summary of Contents for miniDSP DDRC-22D
- Page 1 IRAC ERIES RESOLUTION UDIO ROCESSORS ® WITH IRAC TECHNOLOGY DDRC-22A DDRC-22D DDRC-22DA User Manual miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
- Page 2 11 July 2015 Update for Dirac license removal 10 Sept 2015 Simplified installation and activation procedure 17 October 2016 Updated installation procedure 20 October 2016 miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 3: Table Of Contents
Saving and loading projects ........................ 25 Filter Design ..............................26 Working with graphs .......................... 26 Designing your target curve ........................ 28 5.2.1 The Auto Target .......................... 28 miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... - Page 4 Specifications ............................. 36 MCU Firmware upgrade ........................37 7.3.1 Windows ............................ 37 7.3.2 Mac OS X ............................ 38 Troubleshooting ..........................39 Obtaining Support ..........................40 miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 5: Important Information
ARRANTY ERMS 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, modification or alteration of the unit in any way, or any usage outside of that recommended in this manual. -
Page 6: Package Contents
One USB cable for computer connectivity One UMIK-1 calibrated measurement microphone with USB cable One tripod microphone stand One license for Dirac Live Calibration Tool Stereo for miniDSP One printed Quick-start Guide OTE ON THIS ANUAL This User Manual is designed for reading in both print and on the computer. -
Page 7: Product Overview
Dirac Series processors are available in several versions. The DDRC-22A has analog inputs and outputs, while the DDRC-22D has digital inputs and outputs. The DDRC-22DA has digital inputs and analog outputs, thus eliminating the need for a separate DAC. Each is inserted into the signal chain in the appropriate location (examples follow). - Page 8 The DDRC-22D (digital input/output) is typically inserted into the digital signal chain just before D/A conversion; for example, between one or more digital sources and a DAC. From there, a regular power amplifier or an integrated amplifier complete the system. Variations on this theme include the use of an integrated amplifier with a digital input or the use of a digital input of an A/V receiver, in which case a separate DAC is not required.
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Page 9: How Dirac Live® Works
1.2 H IRAC WORKS Each miniDSP Dirac Series audio processor includes Dirac Live®, a premium mixed-phase room correction technology. This technology is used not only in home stereo and home theater systems but also in cinemas, recording studios, and luxury cars. -
Page 10: Dirac Series / Dirac Live® Configuration Steps
Section 3, Software Installation. Run a series of acoustic measurements using the Dirac Live Calibration Tool Stereo for miniDSP program, to capture the acoustic behavior of your speakers and room. See Section 4, Acoustic Measurement. Generate digital room correction filters that will be executed by the Dirac Series processor. -
Page 11: Hardware Connectivity
(not included). The digital inputs of the DDRC-22D and DDRC-22DA accept sample rates from 20 up to 216 kHz. Note: the digital inputs accept a stereo PCM digital signal only. They do not accept encoded or multichannel digital audio (such as Dolby Digital or DTS). - Page 12 DDRC-22D connections DDRC-22A connections DDRC-22DA connections miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 13: Dc Power
Once calibration and configuration is complete, the computer can be disconnected. The processor can then be controlled from the front panel or via remote control – see Section 6, Using the Dirac Series Audio Processor. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 14: Software Installation
If you purchased your product directly from miniDSP, your software will be available from the User Downloads section of the miniDSP website when your order ships. You will need to be logged into the website with the account you created when purchasing to access the download. -
Page 15: Installation - Windows
3.2.1 Possible Windows installation issues The miniDSP software requires that a number of other frameworks be installed for it to work. For Windows 7 and later, these packages should be installed automatically. For earlier versions of Windows, please download and install the following frameworks before attempting to install any miniDSP software. You can also manually install these if you receive an error message that required software is missing. -
Page 16: Installation - Mac Os X
We recommend that you accept the default installation settings. To run the DDRC-22 Utility, locate DDRC-22.app in the Applications -> miniDSP 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 17: Acoustic Measurement
COUSTIC EASUREMENT The Dirac Live Calibration Tool Stereo for miniDSP uses a set of measurements made in your listening room to calculate correction filters for the left and right channels. The measurements are made using the Dirac Series audio processor and the supplied UMIK-1 measurement microphone. No additional hardware or connectivity is required. -
Page 18: Connections For Acoustic Measurement
The figure below shows a typical connection diagram for performing acoustic measurement. (This example uses the DDRC-22D.) No changes to existing audio connections are needed. Simply: Connect the supplied USB (type A to type B) cable from the processor to a USB port on the computer. -
Page 19: Configuring For Measurement
Start Dirac Live Calibration Tool Stereo for miniDSP (if it is not already running). Be sure to quit the DDRC-2 Utility program before starting Dirac Live Calibration Tool for miniDSP. Running the two programs at the same time may result in communication conflicts and odd behavior. -
Page 20: Sound System Tab
Test signal playback device Preset to DDRC-22 (miniDSP Ltd). This will ensure that test signals are sent into your audio system via the Dirac Series processor. (If this is not present, check that your processor is connected via USB and powered on, then click the Rescan button.) Once you have verified that this tab is correct, click the Proceed button. -
Page 21: Output & Levels Tab
If necessary, adjust Input gain or Output volume so that both channels are in the green. When done, click the Proceed button. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 22: Running The Measurements
Minimize the effect of any external noise, ensure that measurement signal levels are adequate, and/or choose a suitable time for performing measurements. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 23: Listening Environment
4.4.1 Listening environment The Dirac Live Calibration Tool Stereo for miniDSP presents two different listening environments as a visual guide to positioning the microphone for each measurement: Chair, for a single listening seat, and Sofa, for multiple listening seats. Select a listening environment by clicking on the chosen icon. -
Page 24: Executing Measurements
In either of the above cases, go back to the Output & Levels tab and adjust Output volume or Input gain. Then re-run the measurement. (You do not need to redo the measurements you have already successfully completed.) miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 25: Viewing And Redoing Measurements
This is done by clicking on the Save button. The default location for project files is My Documents\MiniDSP\Projects (Windows) or Documents/MiniDSP/Projects (Mac). A project can be reloaded at any time by clicking on the Load button. This enables you to generate new... -
Page 26: Filter Design
ILTER ESIGN Once the full set of measurements has successfully been taken, Dirac Live Calibration Tool Stereo for miniDSP has the acoustical information it needs about your loudspeakers and listening room to create the correction filters. 5.1 W ORKING WITH GRAPHS The Filter Design tab shows a number of plots that can individually be turned on and off with the checkboxes near the top of the screen. - Page 27 Double-click on the graph to zoom back out to the previous zoom level, or click on the small “–” sign next to the zoom indicator at the top right of the display. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 28: Designing Your Target Curve
Note: restoring the auto target will erase the current target curve. If you wish to keep it, you can save it to a file – see Saving and loading target curves. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 29: Editing The Target Curve
If the left and right channels are linked, the same target curve is used for both channels. To create separate target curves for the left and right channels, unlink the two channels as described in Working with graphs. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 30: Guidelines For Target Curve Design
(You may also wish to try a different set of measurement locations.) miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 31: Saving And Loading Target Curves
Once you have a target curve set to your satisfaction, click on the Optimize button. The Dirac Live Calibration Tool Stereo for miniDSP may at this time contact the Dirac license server to verify its license, so you will need to be connected to the Internet. -
Page 32: Loading Filter Sets
Export tab and drag and drop the new filter set onto an empty slot. Load another project. Its most recently generated filter set can then be dropped onto an empty slot. miniDSP Ltd – Hong Kong / www.minidsp.com... -
Page 33: Using The Dirac Series Audio Processor
Once the desired correction filters have been downloaded into the Dirac Series audio processor, the computer is not required and can be disconnected. The front panel and/or an infrared remote can be used to control master volume, preset selection, mute (remote only), input source (DDRC-22D and DDRC-22DA), and Dirac Live filtering. DDRC-22D and... -
Page 34: Infrared Remote Control
To "unlearn" a command, press the Learn button and wait for the plugin to time out. To restore the default Apple remote commands, “unlearn” those commands. miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 35: Additional Information
Infrared remote control on page 34. Be sure to quit Dirac Live Calibration Tool For miniDSP before starting the DDRC-22 Utility program. Running both programs at the same time may result in communication conflicts and odd behavior. miniDSP Ltd – Hong Kong / www.minidsp.com... -
Page 36: Specifications
Power supply 5 VDC single supply @ 600mA, 2.1 mm center-positive Dimensions (H x W x D) 41.5 x 214.5 x 206 mm miniDSP Ltd – Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 37: Mcu Firmware Upgrade
Dirac Series processor MCU firmware to enable new features. To update the MCU firmware, first download and install the latest version of the DDRC-22 Utility program from the User Downloads section of the miniDSP website. Then follow the instructions below for your platform. -
Page 38: Mac Os X
Click on the Upgrade Firmware button. The Dirac Series processor will be put into boot loader mode and the miniDSP bootloader program will start. The status display should show “Device attached”. Click on the Import Firmware Image button and select the .hex file located in the firmware folder of the download. -
Page 39: Troubleshooting
Check that the USB cable is firmly connected. DDRC-22 doesn’t appear in the Sound System tab Check that you have the miniDSP version of the software installed, called Dirac Live Calibration Tool Stereo for miniDSP. On the Sound System tab, click the Rescan button Check the Output volume slider. -
Page 40: Obtaining Support
7.5 O BTAINING UPPORT 1. Check the forums on miniDSP.com to see if this issue has already been raised and a solution or solutions provided. 2. Contact miniDSP via the support portal at minidsp.desk.com with: a. The product information obtained from DDRC-22 Utility (About button) and Dirac Live Calibration Tool Stereo for miniDSP (Sound System tab).