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Section 3: Specifications
Frequency response 20 Hz–10 kHz ±0.3 dB (term. block inputs)
at 3dB below full 20 Hz–20 kHz ±0.7 dB (term. block inputs)
scale input voltage 20 Hz–20 kHz±0.2 dB (DataPort inputs)
Distortion <0.01% THD+N @ +4 dBu out
Delay (throughput) 687.5 microseconds
Dynamic range >93 dB unweighted
20 Hz–20 kHz, 1.5V, 4V and 9V sensitivity
>88dB unweighted
20 Hz–20kHz, 18V sensitivity
Polarity In-phase or inverted
Mute >90 dB attenuation
Inputs
Program inputs 2
Connector type “Phoenix-style” (a.k.a.
“Euro-style”) detachable terminal blocks
Type Electronically balanced
Grounding All shield terminals connected to
chassis
Input sensitivity 1.5, 4.0, 9.0 or 18.0 Vrms
(full scale input level) 6, 14.5, 21.5 or 27.5 dBu
3.5, 12.0, 19.0 or 25.0 dBv
Units are selectable in software interface
Impedance 8.3 K Ohm balanced
3.7 K Ohm unbalanced
Signal Processing 24 bit, 48 kHz.
Common-mode rejection >50 dB, 20 Hz–20 kHz
Crosstalk >75 dB separation, 20 Hz–20 kHz
Outputs
Program outputs 2 (via HD-15)
Connector type HD-15 DataPort connection
Pinout Special, see appendix
Cable type QSC DataPort cable
Qualified length 2 meters
Daisy-chain output 2 (1 per channel)
Connector “Phoenix-style” (a.k.a.
“Euro-style”) detachable
terminal blocks
Type Electronically balanced
Grounding Shield terminal connected to
chassis
Output level 6.0 or 4.0 Vrms
(full scale) 18.0 or 14.5 dBu
15.5 or 12.0 dBv
Output impedance 600 Ohms balanced
27
Power amplifier connectivity
Power amplifier interface
Compatibility all QSC and non- QSC amplifiers
Full-feature set all QSC DataPort equipped amplifiers
Connector and cable
HD-15 VGA cable, 2 meters length
qualified (for longer runs, contact
QSC’s Technical Services Department)
RS-232 Port
Cable Type 9-pin serial cable, male-to-female
Maximum Length 25 feet (7.6 meters)
Contact closure input (sense)
Inputs 1 discrete input (pin #9 of RS-232 port)
Configuration Single-ended input
Resistance for closure detect <150 Ohms
Resistance for open detect >1.9 K Ohms
TTL Compatible
Maximum Voltage= +9vdc
Amplifiers one 2-Ch. amplifier per DSP-3
Amplifier status monitor
Clip indicator Senses channel clipping
Protect indicator Senses amplifier protect status
(status monitoring not available for non-DataPort amplifiers)
Note: Specifications are subject to change without notice.