Digital Signal Processor


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After three decades of developing pioneering audio products and systems, QSC raises the bar once again, setting a new standard in signal processing with the new DSP-3 Digital Signal Processing Module.

The DSP-3's two channels of independent signal processing deliver more power, flexibility, and features-in short, more of everything you really need in a DSP-for less. Simple to install and compact, the DSP-3 is the advanced and affordable digital signal processing solution for your audio system.

The DSP-3’s powerful processor allows you to perform a wide range of signal processing functions. Whether you need speaker crossovers, EQ, time delay, or subsonic filters, the DSP-3 is as flexible as your systems's needs.

Each channel includes:

  • Crossover filtering
  • Multiple parametric EQs
  • Shelf filtering
  • Tone and noise generation
  • Precision attenuation
  • Multiple delays (up to 910 ms)
  • Mixing
  • Compression and limiting

The DSP-3’s processing horsepower is dynamically assignable so you’re not locked into a fixed configuration. Simply plug your laptop into its RS-232 serial interface and use QSC's powerful configuration software. You can easily configure multiple processing functions and signal flow with "click-and-drop" simplicity. The DSP-3 also allows real-time control or set-and-forget convenience. You can even save each configuration on disk for future recall.

Getting attached to the DSP-3? Then you’ll be glad to know how easily it attaches to most two-channel DataPort-equipped QSC amplifiers, including the CX, DCA, and new PowerLight 2—without taking up extra rack space. Or use multiple DSP-3s with our rack-mount panel kit to create a stand-alone DSP solution that interfaces with any amplifier or system.

Hardware Features

  • Two independent channels of DSP
  • 48kHz, 24-bit converters
  • No turn on pops or zipper noise
  • If the memory or hardware fails, unit turns on muted
  • Host interface via RS-232 or QSControl Audio Network System* via CM16a Amplifier Network Monitor
  • Electronically balanced inputs
  • Contact closure to trigger gain preset changes
  • Post-DSP output signal for daisy-chaining
  • Peak, RMS and Clip meter displays
  • Selectable input sensitivity: 1.5, 4, 9, 13 Vrms; 6, 14.5, 21.5, 24.5 dBu; 3.5, 12, 19, 22.2 dBV
  • DataPort "pass-through" compatible with QSControl
  • Selectable output sensitivity: 4 Vrms or 6 Vrms

Software Features

  • "Drag-and-drop" configuration software
  • DSP processing power and memory dynamically assignable to signal processing functions
  • Graphical representation of DSP resources
  • Firmware upgrades downloadable via RS-232
  • Hard copy printout of configuration layout or parameter settings


  • Input Connectors: Two 3-pin Euros (1 for each audio channel); One HD-15 female DataPort; One RS-232 female (PC input); One Power Jack (Required only for PowerLight, QSC non-DataPort amplifiers, or non-QSC amplifiers, using remote rack mounting bracket)
  • Output Connectors: Two 3-pin Euros (for daisy-chaining each audio channel out); One HD-15, male amplifier connection
  • Dimensions (H x W without flanges x W with flanges x D): 3.49" x 3.33" x 4.76" x 1.21"
  • Weight: 0.6 lbs net, 1 lb shipping

The DSP-3 mounts directly to the back of these amplifier models via the DataPort:

  • Two-channel CX Series
  • Two-channel DCA Series
  • PowerLight 2 Series
  • ISA Series (Version 2 DataPort--Audio only; requires external power supply)
Remote Rack Mounting Bracket for DSP-3 & DSP-4QSC DPX4 Remote Rack Mounting Bracket for DSP-3 & DSP-4

The DPX-4 allows remote rack mounting of QSC DataPort-compatible accessory modules such as the DSP-3 and DSP-4 digital signal processors. The bracket allows accessory modules to be used in a standalone configuration with QSC four-channel, ...

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Power Supply for DSP3 QSC DPX1 Power Supply for DSP3

This external power supply is used for the DSP-3 Digital Signal Processor under special circumstances.When a DSP-3 is mounted out-board with a DPX-4 Rack Mount Bracket, or directly on an amplifier where external voltage is necessary, this ...

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Our Price:$60.00

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