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miniDSP DDRC-24 (with Dirac Live)

 miniDSP DDRC-24 with remote control

Product Overview

The miniDSP DDRC-24 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.

Stereo (two-channel) Dirac Live provides world-class room correction, while a full suite of miniDSP’s powerful audio processing tools and flexible I/O routing support applications such as subwoofer integration and active speakers.

Dirac Live room correction

The miniDSP DDRC-24 (with Dirac Live) executes stereo (two-channel) Dirac Live® digital room correction, from Dirac Research. Dirac Live's mixed-phase filtering technology will improve the imaging of your system, minimize the effects of room modes and resonances, and improve dynamics and clarity.

To accomplish this, the Dirac Live software steps you through the procedure for taking measurements around your listening area. It employs a sophisticated analysis algorithm to make the optimal correction across the whole listening area, not just at a single point. You have full control over the target frequency response. Measurements are taken with the miniDSP UMIK-1 or UMIK-2 calibrated acoustic measurement microphone.

Illustration of Dirac Live magnitude response correction

In addition to correcting magnitude response, Dirac Live® corrects the system's impulse response, which reflects how the system responds to a sharp transient such as a drumbeat. Reflections, diffraction, resonances, misaligned drivers, and so on, all combine to smear out the transient. Impulse response correction is a critical factor for accurate sound-staging, clarity and bass reproduction.

Illustration of Dirac Live impulse response correction

Typical applications

The miniDSP DDRC-24 has a wide range of applications in home and professional audio. This section illustrates a few of them.

Figure 1 shows the miniDSP DDRC-24 used as a digital preamp and two-way crossover. The DDRC-24 provides accurate and flexible integration between the subwoofers and the main speakers as well as comprehensive EQ and tuning options.

miniDSP DDRC-24 as preamp with subwoofer integration and stereo (two-channel) Dirac Live room correction

Figure 1. miniDSP DDRC-24 as preamp with subwoofer integration and stereo (two-channel) Dirac Live room correction

Figure 2 illustrates a similar use of the miniDSP DDRC-24 as a digital preamp, but the output channels have instead been configured to act as crossover for a pair of active 2-way speakers. Amplification can be via a multichannel power amplifier as shown, or a pair of stereo amplifiers.

miniDSP DDRC-24 used as preamp, active crossover and stereo (two-channel) Dirac Live room correction

Figure 2. miniDSP DDRC-24 as preamp and active crossover and stereo (two-channel) Dirac Live room correction