QSC DSP-4 เครื่องปรับแต่งสัญญาณระบบดิจิตอล ขนาด 2 input Balance / 2 output balanced
| DSP-4 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 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)
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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
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| System Requirements |
- Windows® 98, NT4 (SP6), and 2000 (SP1)*
- SVGA monitor @ 800 x 600 (min.); 1024 x 768 recommended
- CD-ROM drive
- 32 MB RAM (min.)
- 10 MB free hard disk space (min.)
- Available RS-232 COM port
- Male-to-female 9-pin serial cable (for programming)
* Windows ME not supported
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DSP-4 SPECIFICATIONS
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Frequency Response
XLR Output
3 dB below full scale input voltage |
20 Hz to 10 kHz ± 0.3 dB
20 Hz to 20 kHz ± 0.7 dB |
| Distortion |
<0.02% THD+N @ +4 dBu |
| Dynamic Range Unweighted |
>104 dB 20 Hz to 20 kHz, 1.5V sensitivity, unweighted
>106 dB 20 Hz to 20 kHz, all other sensitivies, unweighted
>106 dB 20 Hz to 20 kHz, 1.5V sensitivity, A weighted
>108 dB 20 Hz to 20 kHz, all other sensitivies, A weighted |
| Common-mode Rejection |
>50 dB minimum 20 Hz to 20 kHz
>60 dB typical 20 Hz to 20 kHz |
| Input Sensitivity (selectable) |
1.5, 4, 9, 18 Vrms
6, 14.5, 21.5, 27.5 dBu
3.5, 12, 19, 25 dBV |
| Output Sensitivity |
4, 6 Vrms
14.5, 18 dBu
12, 15.5 dBV |
| Crosstalk (inter-channel w/in DataPort pair) |
>62 dB separation, 20 Hz to 20 kHz |
| Input Connectors |
Two XLR female (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 XLR male (for daisy-chaining each audio channel out)
One HD-15, male amplifier connection |
| Indicators |
Front: Power (one blue) Signal (one green) |
External Power Requirements
(DPX-1 recommended) |
15 VDC, 0.4 A
Required only for PowerLight, QSC non-DataPort amplifiers, V2 DataPort (audio only) models, or non-QSC amplifiers. |
| Dimensions |
3.5" height
3.75" width
1.38" depth |
| Weight |
.93 lbs net, 1 lb 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 |
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The DSP-4 mounts directly to the back of these models via the DataPort:
Full Feature:
- 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:
(Download the DPX-4 specs in PDF format here.)
Full Feature (DPX-2 cable required)
- Four-channel CX Series
- Four-channel DCA Series
- PowerLight Series
Reduced Feature Set
- MX
- USA
- PLX
- RMX
- Non-QSC amplifiers
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