QSC DSP-4 6 available as of 3/23 price for each includes power supply. If you buy multiples you can have the middle atlantic rack part that holds them for free.
DSP-4 FEATURES
QSC DSP-4 Digital Signal Processor
QSC has more than three decades of experience pioneering cutting edge audio products, and once again they raise the bar with the DSP-4 Digital Signal Processing Module. This compact module offers two channels of independent DSP and attaches to the back of most 2-channel DataPort-equipped QSC amplifiers-without occupying any additional rack space.
Capitalizing on the success of our DSP-3, the second-generation DSP-4 provides several enhancements in functionality and performance while also incorporating the universally popular XLR balanced connectors. These enhancements include new A/D and D/A converters for improved signal-to-noise performance and upgraded software that significantly increases the unit's operational characteristics.
Powerful
Simple to install, compact, and featuring "set-and-forget" convenience, the DSP-4's powerful processor enables you to perform a wide range of signal processing functions; and with its new A/D and D/A converters, its noise floor improves. Whether you need speaker crossovers, EQ, time delay, or subsonic filters, the DSP-4 is as flexible as your system'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
Configurable
The DSP-4's processing horsepower is dynamically assignable so you are not limited by a fixed signal chain. Simply use QSC's powerful PC-based Signal Manager software to easily configure multiple processing functions and signal flow with "drag-and-drop" tools.
Hardware
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 to prevent driver damage
Host interface via RS-232 or QSControl Audio Network System via CM16a Amplifier Network Monitor
Electronically balanced XLR inputs
Contact closure to trigger preset changes
Post-DSP output signal for daisy-chaining
Peak and RMS meter displays with clip indication
DataPort pass-through compatible with QSControl
Selectable input sensitivity: 1.5, 4, 9, 18 Vrms;
6, 14.5, 21.5, 27.5 dBu; 3.5, 12, 19, 25 dBV
Output signal gain (to be released)
Software
"Drag-and-drop" configuration software
DSP processing power and memory is dynamically assigned to signal processing functions - eliminating the limitations imposed by fixed signal chain designs
Graphical representation of DSP resources
Firmware upgrades via RS-232
Hard copy printout of signal flow layout or parameter settings
DSP-4 FUNCTIONS
Multiple Parametric Filters, assignable anywhere in the signal chain:Variable Frequency
Variable Gain
Variable Q
Bypass (one EQ Band)
Bypass all EQs
Add EQ
Delete EQ
Show Response
Multiple Delays, assignable anywhere in the signal chain910 msec Maximum
20.83 μsec Incremental
Dynamics processor with Compressor assignable anywhere in the signal chain: Gain
Threshold
Ratio
Attack Time
Release Time
Show Response
Bypass
Output Peak Limiter, assignable anywhere in the signal chain:Gain
Threshold
Attack Time
Release Time
Show Response
Bypass
High and Low-Pass Crossover Filters, assignable anywhere in the signal chain:Butterworth 6, 12, 18, 24 dB per octave slope
Bessel 6, 12, 18, 24 dB per octave slope
Linkwitz-Riley 12 and 24 dB per octave slope
Bypass (one EQ Band)
Bypass all EQs
Add EQ
Delete EQ
Show Response
High and Low-Pass Shelf Filters, assignable anywhere in the signal chain:
Variable Corner Frequency
Variable Gain
Variable Q
Bypass (one EQ Band)
Bypass all EQs
Add EQ
Delete EQ
Show Response
Signal Mute
Attenuation: 0.1 dB steps
Mix Audio (2 to 1 Mixer)
Signal Splitter
Built-in Noise Generator (Pink & White)
Built-in Variable Frequency Tone Generator
Signal Polarity Reversal
RMS and Peak Metering with Clip Indication
Add or delete up to 7 additional bands of "EQ" per filter block
Visual editing of composite filter response, using cursor controls in graphical display
Individual or group bypass of EQ bands per filter block
"Predictive Delay" feature- produces less signal distortion than analog compressor/limiters-especially for fast attack times
