Qsc GXD4 Owner's Manual

TD-000450-00-A

The GXD Class-D amplifiers have been engineered for high performance output and optimized for maximum real-world headroom into 4: and 8: 
loudspeaker systems. The power levels of the GXD amplifiers are matched to the most popular loudspeakers:

•  GXD 4, per channel – 400 W into 8:, and 600 W into 4: (1600 W peak)

•  GXD 8, per channel – 800 W into 8:, and 1200 W into 4: (4500 W peak)

The Class-D amplifier topology is very efficient, making the GXD amplifiers small and light. In addition the Universal Power Supply used in the 
GXD helps to reduce weight. Both amplifiers are 2RU and are only 229 mm (9 inches) deep. The GXD 4 weighs in at 5 kg (11 lbs), the GXD 8 is at 
5.9 kg (13 lbs).

The GXD amplifiers have an LCD for control and monitoring, with three buttons for menu navigation, and two knobs for adjusting parameters. There 
are 20 User Presets that can be edited, stored and recalled to match any configuration or system

Each channel has parallel XLR and ¼” TRS connectors for inputs. The outputs are professional NL4 and binding post connectors for mono and bi-amp 
speaker connectivity. You can keep your amplifier up-to-date with software updates using the USB connector.

Both amplifiers have complete loudspeaker processing:

•  Channel Gain & Polarity

•  4th Order Linkwitz Riley Highpass and Lowpass Filters

•  4-band Parametric EQ

•  50 mSec of Alignment Delay

•  QSC Power Limiting 

The GXD Series amplifiers are designed to be mounted in a standard rack-mount unit. The amplifiers are 2RU high, and 229 mm (9 in) deep.

1.  Secure the amplifier in the rack with four screws (not included). 

 

Be sure that nothing is blocking the front or rear ventilation openings, and that each side has a minimum of 

2 cm clearance.

1.  Quick-Start Guide TD-000449-00

2. GXD Amplifier

3.  IEC AC Power Cord

4. USB Cable