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DSP-3
 DSP-3 (Digital Signal Processing)
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.
If you would like to purchase a DSP-3 module, please call our sales department at: 800-854-4079.
Powerful
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
Configurable
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.
Versatile
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.
| DSP-3 FEATURES |
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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
- 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
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Software |
- "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
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| DSP-3 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 chain
910 msec Maximum
20.83 usec 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 |
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DSP-3 SPECIFICATIONS |
Frequency Response
Euro Input
DataPort |
20 Hz to 10 kHz ± 0.3 dB
20 Hz to 20 kHz ± 0.7 dB
20 Hz to 20 kHz ± 0.2 dB |
| Distortion |
<0.01% THD+N @ +4 dBu |
| Dynamic Range Unweighted |
>93 dB, 20 Hz to 20 kHz for 1.5, 4, 9V input sensitivities
>88 dB, 20 Hz to 20 kHz for 13V input sensitivities |
| Common-mode Rejection |
>50 dB, 20 Hz–20 kHz typical
>40 dB @ 20 kHz worst case |
| Input Sensitivity (selectable) |
1.5, 4, 9, 13 Vrms
6, 14.5, 21.5, 24.5 dBu
3.5, 12, 19, 22.2 dBV |
| Output Sensitivity |
4, 6 Vrms
14.5, 18 dBu
12, 15.5 dBV |
| Crosstalk (inter-channel w/in DataPort pair) |
>75 dB separation, 20 Hz to 20 kHz |
| 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 |
| Indicators |
Front: Power (one blue) Signal (one green) |
| External Power Requirements |
15 VDC, 0.4 A (Required only for PowerLight, QSC non-DataPort amplifiers, or non-QSC amplifiers, using remote rack mounting bracket) |
| Dimensions |
3.49" (1.37 cm) height
3.33" (1.31 cm) width without flanges
4.76" (1.48 cm) width with flanges
1.21" (0.48 cm) depth |
| Weight |
0.6 lbs (0.27 kg) net
1 lb (0.45 kg) shipping |
| Construction |
Steel chassis and back cover |
| *DataPort input for use with CM16a Amplifier Network Monitor in QSControl audio network systems for remote management of QSC amplifiers and other audio devices. |
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| Compatible Amplifier Models |
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)
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The following models require a Remote Rack Mounting Bracket (p/n DPX-4, mounts up to 4 modules):
(Download the DPX-4 specs in PDF format here.)
Full Feature
- Four-channel CX Series
- Four-channel DCA Series
- PowerLight Series
Reduced Feature Set
- MX
- USA
- PLX
- RMX
- Non-QSC amplifiers
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DIGITAL SIGNAL PROCESSORS
DOCUMENTS
DSP-3 Users Manual (PDF 2.3MB)
DSP-3 Specifications (PDF 414K)
HI-RES IMAGES
DSP-3
RESOURCES
DSP-3 PAR Article
Printed in Pro Audio Review (PDF 320k)
DSP FAQ (Frequently Asked Questions)
DSP Voicings
SOFTWARE
SIGNAL MANAGER SOFTWARE
ACCESSORIES
DPX-1 External Power Supply
When a DSP-3 is mounted outboard with a DPX-4 Rack Mount Bracket, or directly on an amplifier where external voltage is necessary. (FG-000306-00)
DPX-2 DataPort Cable
Used when the DSP-3 is mounted outboard. (SG-000301-00)
DPX-4 Rack Mount Bracket
Allows remote outboard mounting of the DSP-3. (SG-000303-00) |
