User manual
Table Of Contents
- Important Information
- 1 Product Overview
- 2 Installation and Setup
- 3 Acoustic Measurement
- 4 Filter Design
- 5 Using the DDRC-88A audio processor
- 6 Optimizing gain structure
- 7 Additional Information

  PRELIMINARY AND SUBJECT TO CHANGE  
miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice  7 
1  PRODUCT OVERVIEW 
Thank you for purchasing a DDRC-88A audio processor powered by Dirac Live®, the world’s premier room 
correction solution. We are delighted to offer you this software and hardware combination, the fruit of 
extensive research and development and years of experience in sound system tuning. 
The DDRC-88A is an 8-channel digital audio signal processor (DSP) running the Dirac Live® room correction 
algorithm. The onboard floating-point SHARC processor allows full time and phase correction of a 7.1 home 
theater or multichannel audio system. Inputs and outputs are analog, available as both single-ended signals 
connected via RCA jacks, and as balanced signals via Phoenix terminal blocks. 
The DDRC-88A is one of the products in the miniDSP Home Theater Series of audio processors. Deploying a 
DDRC-88A processor in a home theater system will: 
  Improve imaging and immersion 
  Improve clarity of music and dialog 
  Produce a tighter bass 
  Reduce listening fatigue 
  Remove resonances and room modes 
While typical usage is for home theater, the DDRC-88A can be used anywhere an 8-channel room correction 
processor is required, such as recording and mastering studios, drama theaters and performance venues, places 
of worship, and so on. 
1.1  TYPICAL SYSTEM CONFIGURATION 
The DDRC-88A is inserted between line-level analog sources and power amplification. In home theater 
applications, signal to the DDRC-88A typically comes from an A/V processor (AVP) with one or more source 
devices, and the amplification is typically a multichannel power amplifier. A source such as a Blu-ray player with 
multichannel analog outputs can also be connected directly to the DDRC-88A. 










