QSC Audio GX5, GX7, GX3 user manual Rear Panel Features

6

REAR PANEL FEATURES

EN

CROSSOVER SWITCH

CROSSOVER POSITION

Splits a full-range signal to drive a subwoofer and top box. CH 1 receives the lows, from 20-100Hz, for the subwoofer. CH 2 receives 100Hz to 20kHz, to power a full range speaker. When using CROSSOVER mode, connect signal to CH 1 only. Use the two Gain controls to balance the LF and HF signals (see Front Panel).

FULL RANGE POSITION

For normal, 2-channel use with all inputs active. The crossover is bypassed.

EXHAUST VENT

Keep vent clear. Install in open-back rack.

REAR EAR MOUNTING

Rear ears designed for protecting the rear connector wire dressing and supporting the amplifier in a rack. A rear rack support mounting kit (model FG-000031-00 pack of two) is available from QSC Technical Services Group.

INPUT CONNECTIONS

BALANCED XLR INPUTS

Pin 2 Positive, Pin 3 Negative, Pin 1 Shield (Ground). Recommended for long or short runs, either fixed or frequently changed. Each channel’s XLR and TRS jacks are connected internally, and provide feed thru to the other connector.

BALANCED 1/4-INCH TRS INPUTS

Tip positive, Ring Negative, Sleeve Shield (Ground). Recommended for long or short runs that are frequently changed.

UNBALANCED 1/4-INCH TS INPUTS

Accepts unbalanced 1/4-inch plugs for short runs. Tip positive, Sleeve Shield (Ground).

UNBALANCED PHONO INPUTS

Tip Positive, Barrel Shield (Ground). Recommended for semi-permanent connections to nearby sources, within the same rack. NOTE: when using these inputs, the TRS or XLR inputs should not be used.