Connecting Xlr Audio Inputs And Outputs - QSC DSP-4 Hardware Manual

Digital signal processor amplifier accessory

Hide thumbs Also See for DSP-4:

Table of Contents

INSTALLATION-

The DSP-4 can be used with non-DataPort equipment by utilizing the XLR connections. The accessory power

supply, DPX-1, is required for all non-DataPort applications.

Inputs-

The audio input can be from one of two sources; the front-panel DataPort or the XLR input connectors. Do not use both sets of

inputs at the same time! Inputs are electronically balanced with an impedance of 8.3k ohms (balanced) or 3.7k ohms (unbalanced).

Input sensitivity is software-selectable from 1.5 to 18 volts (rms) full-scale. Shield terminals connect to the chassis. Use balanced

connections for the lowest possible noise levels and to minimize the possibility of hum-inducing ground loops.

Outputs-

The DSP-4's post-processor audio is output to the rear-panel DataPort AND the XLR output connectors. The outputs are

electronically balanced with an impedance of 600 ohms. Output level is software-selectable from 4 or 6 Vrms. The XLR out's can

be used for daisy-chaining the processed audio to additional amplifiers, even when connected to a DataPort-equipped amplifier

via the rear-panel DataPort. The maximum number of QSC amplifiers that can be connected to the DSP-4's outputs (including the

output DataPort) is five. This ensures THD stays below 0.1%. The effect on output level signal strength is about -3 dB when five

QSC amplifiers are daisy chained. An additional +12 dB of output gain is available in software (OUT1 and OUT2 blocks).

If making your own

cables, please refer to

the

Appendix

for

proper pinout of the

XLR

connectors.

Pinouts are provided

for balanced and un-

balanced configura-

tions.

XLR Connections

Table of Contents