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Computer Configurable Digital Signal Processor
Featuring intuitive PC system configuration combined with "set-and-forget"
convenience, the DSP-30 unites easy-to-use, customizable, two-channel digital
signal processing (DSP) with a simple preset selection interface that requires
only two buttons. It can be used with all amplifiers and is housed in a
1RU, 19-inch rack-mount steel chassis. Sampling frequency is 48 kHz with
24-bit resolution. Dynamic range is greater than 95 dB. Rugged and dependable
in the spirit of all QSC professional audio products, the DSP-30 is well
suited to a variety of applications including mobile DJ, club PA, and pro
touring.
Powerful
The DSP-30's powerful processor enables a wide range of signal processing
functions. Whether you need speaker crossovers, EQ, time delay, or subsonic
filters, the DSP-30 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-30'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. The DSP-30 provides eight fully
configurable user presets, selectable from front-panel switches.
Cost-effective
The power and flexibility of the DSP-30 eliminates the need for individual
outboard signal processors—reducing cost, space, and installation time
for almost any application. Housed in a 1RU, 19-inch rack-mount steel chassis,
it can be used with all audio systems.
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DIGITAL SIGNAL PROCESSORS
DOCUMENTS
DSP-30 Users Manual
(PDF 1MB)
DSP-30
Specifications (PDF 284K)
HI-RES IMAGES
DSP-30
RESOURCES
DSP Voicings
SOFTWARE
SIGNAL MANAGER
SOFTWARE |
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| DSP-30 FEATURES |
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Hardware |
- 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
- Easy PC connection with front panel RS-232
- Balanced Neutrik® Combo (XLR and 1/4") inputs and
XLR outputs
- Power and signal present LEDs with signal level
- Numeric display indicates current preset
- Eight fully configurable user presets
- Preset Browse and Accept buttons with lock-out feature
- Selectable input sensitivity: 1.5, 4, 9, 18 Vrms; 6, 14.5,
21.5, 27.5 dBu; 3.5, 12, 19, 25 dBV
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Software |
- "Drag-and-drop" configuration software
- Hard copy printout of configuration layout or parameter
settings
- DSP processing power and memory dynamically assignable
to signal processing functions— eliminating the limitations
imposed by fixed signal chain designs
- Graphical representation of DSP resources
- Firmware upgrades via RS-232
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| DSP-30 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 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
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| Signal Polarity Reversal |
| RMS and Peak Metering with Clip Indication
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| 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-30 SPECIFICATIONS |
| Audio Converters |
24 BIT, 48 kHz |
| Frequency Response |
20 Hz to 20 kHz ± 0.4 dB
at 1 dB below full scale input voltage (all sensitivities) |
| Distortion |
<0.007% THD+N at 1 dB below full scale output
(all sensitivities) 20 Hz to 20 kHz |
| Throughput Delay |
1.00 milliseconds (A/D –› DSP –›
D/A) |
| Dynamic
Range |
>95 dB unweighted, 1.5V, 4V and 9V input sensitivities
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| AES-17 -60 dB Method |
>93 dB unweighted, 18V input sensitivities |
Input
Sensitivity
(Full scale sine wave RMS before clipping. Full scale output
voltage 9.3 Vrms.) |
1.5, 4, 9, 18 Vrms
6, 14.5, 21.5, 27.5 dBu
3.5, 12.0, 19.0, 25.0 dBV |
| Polarity |
In-phase or inverted |
| Mute |
>95 dB attenuation |
Inputs
Program inputs
Connector
Type
Grounding
Input sensitivity (full scale input level)
Impedance
Common-mode rejection
Crosstalk |
2
Balanced Neutrik Combo
Electronically balanced
All shield terminals connected to chassis
Level and units are selectable in software interface
8.3 K Ohm balanced, 3.7 K Ohm unbalanced
>54 dB, 20 Hz-20
kHz
>80 dB separation, 20 Hz-20kHz |
Outputs
Program outputs
Connector
Type
Grounding
Output level
Maximum output (full scale)
Output pad
Output impedance |
2
3-pin male XLR receptacle
Electronically balanced
All shield terminals connected to chassis
Level and units are selectable in software interface
9.3 Vrms (+21.5 dBu), THD <1.0%
-6 dB
600 Ohms balanced |
RS-232 Port
Port type
Cable type
Maximum length |
RS-232, female, straight through
9-pin serial cable, male-to-female (serial extension cable)
25 feet (7.6 meters) |
Contact Closure
Input
Inputs
Configuration
Resistance for closure detect
Resistance for open detect
TTL compatible thresholds with9V DC max input |
1 discrete input (pin #9 of RS-232 port)
Single-ended input, pull LOW (to GND, pin5) for closure detect
<150 Ohms
>1.9 K Ohms |
| Power Amplifier
Interface, Compatibility |
Works with all professional audio power products |
| Indicators |
Power: 1 blue LED
Channel 1 and Channel 2 signal level: 2 green LED’s, Active
Preset, Number and Lock |
| Chassis Type |
Steel (chassis and covers) |
| Dimensions |
1.73" (4.4 cm) height
18.9" (48.0 cm) width (including rack ears)
14.9" (37.5 cm) depth (including rack ears)
13.7" (34.8 cm) depth (excluding rack ears) |
| Weight |
9.5 lbs. (3.4 kg) net
12.5 lbs. (4.1 kg) shipping |
| Mounting |
May be rack mounted or may be used separate from
rack |
| Operating temperature
range |
32° to 122° F (0° to 50° C) |
Internal Power
Supply
AC Input Voltage
AC Input Current
Frequency
Power Cord |
Autodetect 100-240 VAC
0.3 Amps rms
50 to 60 Hz
IEC-type detachable 6 ft. cord |
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