Description

QSC GXD 8

The GDX 8 from QSC is a professional power amplifier designed for professional PA systems utilizing speakers with 4 and 8 ohm loads and a maximum output of 4500W. The GDX 8 employs a class D output stage with a universal power supply for high performance and efficiency, while keeping the unit lightweight at 13.2 lbs. The integrated DSP section includes High and Low-Pass filters (24 dB LR), 4-band parametric equalizer, signal alignment delay, and RMS/Peak speaker protection limiting.

The parallel XLR and 1/4″ TRS input connectors offer broad compatibility with convenient loop-through capabilities, while the professional binding posts and NL4 connector provide mono and bi-amped speaker connections. In addition to the limiting offers on the inputs and outputs, the GDX employs smart speaker protection by providing settings for the loudspeaker’s continuous output and impedance (4 ohm or 8 ohm). The GDX 8 ships with a standard IEC power cord.

High peak output power with up to 4500W
Power levels matched to popular loudspeakers and optimized for maximum headroom into 4–ohm and 8-ohm speaker systems
Class-D output stage with a universal power supply for high performance and efficiency
Extensive built-in loudspeaker processing, includes high & low-pass filters, 4-band PEQ, limiting, and delay
Large LCD display simplifies amplifier setup and indicates amp status
Inputs: Parallel XLR and 1/4” TRS connectors for compatibility with any source while providing convenient loop-thru capability
Precision rotary encoders for gain and DSP parameter control
Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections
Digital Limiting automatically protects the amplifier from damage due to temperature rise or overdrive
Adjustable speaker protection to match your loudspeaker’s power and impedance
Front panel LEDs indicate signal presence, input overload, and amplifier clipping

Power Amplifier

Number of Channels	2
Power Rating	8 Ohms: 1500 W Peak per Channel 800 W RMS per Channel 4 Ohms: 2250 W Peak per Channel 1200 W RMS per Channel
Amplifier Class	Class-D

Performance

Protections	DC Fault, Open Circuit, RF, Short Circuit, Thermal
Frequency Response	20 Hz to 20 kHz +0.7/-0.8 dB
Damping Factor	100
Input Sensitivity	1.2 Vrms 3.9 Vrms
Input Impedance	10 Kilohms (Unbalanced) 20 Kilohms (Balanced)
Max Gain	36.5 dB
Max Input Level	+23.5 dBu
SNR	100 dBA
THD	<1% (1 kHz, at Rated Power)

Signal Processing

Audio Delay	Adjustable Up to 50 ms
EQ	4-Band Parametric EQ
Filters	High-Pass: 20 Hz to 4 kHz, 24 dB/Octave Linkwitz-Riley Low-Pass: 60 Hz to 4 kHz, 24 dB/Octave Linkwitz-Riley
Limiting	Peak

Connectivity

I/O	2 x XLR 3-Pin Female Input 2 x 1/4″ TRS Balanced Input 2 x speakON NL4 Output 2 x Binding Post Pair Output

Power

Current Consumption

100 VAC:
6.2 A
120 VAC:
5.6 A
230 VAC:
3.2 A

Physical

Display & Indicators	2 x Green LED (Signal) 2 x Red LED (Clip) 1 x Blue LED (Power) 1 x LCD
Certifications	CE, RoHS, UL, WEEE, as per Manufacturer
Dimensions	3.5 x 19.0 x 10.2″ / 8.9 x 48.3 x 25.9 cm
Weight	13.2 lb / 6 kg

Additional information

Weight	1 lbs
Dimensions	20 × 10 × 5 in

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