QSC GX3 Power Amplifier

QSC GX3 Amplifier

8ohms @ 300W & 4ohms @ 425W Both Ch Driven. 1/4 inch/ XLR inputs

$899.00 $674.25

In Stock
 
 
 
SKU: GX3 Categories: , Tag:

Description

The QSC GX3 425-watt power amplifier gives your speakers the power they need while giving you the efficiency and protective features you want for easy operation and peace of mind. The GX3 uses advanced components for both light weight and reliability. Its Guardrail protection allows delivery of peak power while preventing overloads. It’s equipped with a crossover switch, so adding a subwoofer to your system is a snap. Optimized for 4- and 8-ohm speakers, this amp also fits perfectly into popular racks, and its lightweight design (less than 30 lbs.) makes the GX3 incredibly easy to transport.

At just 12.1 kg, the GX3 is light enough to cart around – but we’re seeing most of these get picked up once, plonked into a fixed installation and left to do their thing. They’re loaded up with all the usual protection features you’d expect these days from an amplifier: Short circuit, open circuit, thermal, RF protection, and load protected against DC faults. Plenty of connectivity with inputs via 2 x XLR, balanced 1/4″ and also RCA.

QSC GX Series – Professional audio quality, meticulous engineering, precision manufacturing and long-term reliability – are all intrinsic to GX. Add contemporary styling, multiple input/output options, light weight, and advanced protection circuitry, and the GX Series clearly represents real value – something everyone can use.

Output power:

  • 8 ohms / 1 kHz (both channels driven): 300W
  • 8 ohms / 1 kHz (single channel driven): 350W
  • 4 ohms / 1 kHz (both channels driven): 425W
  • 4 ohms / 1 kHz (single channel driven): 500W

Features

  • Ideal for speakers in the 250 -350 watt (program) range
  • Power levels matched to the most popular speakers used by entertainers
  • Optimized for maximum real-world headroom into 4- and 8-ohm speaker systems
  • Inputs: XLR, 1/4-inch TRS and phono input connectors for compatibility with any source
  • Outputs: Speakon® combo accepts 1/4-inch (TS) plugs or Speakon 2- and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems
  • Minimum depth chassis (10.1-inch / 257 mm) fits in compact, inexpensive effects racks
  • Lightweight – GX3 and GX5 less than 26 lb (12.5 kg). GX7 only 15.5 lb (7 kg)*
  • Detented gain controls for precise setting and matching of sensitivity
  • GuardRail™ automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show
  • Front panel LEDs monitor power, signal, and clipping
  • Subwoofer/satellite crossover built-in

Specifications

SPECIFICATIONS GX3 GX5 GX7
Output power per channel
8 ohms / 1 kHz (both channels driven) 300 W 500 W 725 W
8 ohms / 1 kHz (single channel driven) 350 W 600 W 800 W
4 ohms / 1 kHz (both channels driven) 425 W 700 W 1000 W
4 ohms / 1 kHz (single channel driven) 500 W 850 W 1200 W
Distortion (1 dB below rated power, 1 kHz) 8 ohms: less than 0.02%
4 ohms: less than 0.05%
Signal to Noise (20 Hz – 20 kHz) 100 dB
Input Sensitivity 1.2 V rms
Voltage Gain 32.2 dB 34.4 dB 36.1 dB
Output Circuitry Class B 2-tier Class H 2-tier Class H
Power Requirements (1/8 power, pink noise at 4 ohms, 120V) 6.3 A 6 A 10.1 A
Frequency Response 20 Hz–20 kHz, +0, -1 dB
Dynamic Headroom (4 ohms) 2 dB
Input Impedance Greater than 20 kΩ (balanced)
Maximum Input Level +24 dBu (16 V rms)
Input Connectors (each channel) 3-pin XLR and 1/4-inch TRS, balanced, parallel
Phono, unbalanced
Output Connectors (each channel) Speakon®, 1/4-inch, Binding posts
Amplifier and Load Protection Short circuit, open circuit, thermal, RF protection
Load protected against DC faults
Front Panel Controls and Indicators Gain controls, 21 detents
Red CLIP LEDs, proportional, 0.1% THD threshold
Green SIGNAL LEDs, threshold 35 dB below clipping
Blue POWER LED, AC on
Rear Panel Controls Full Range / Crossover switch
100 Hz, 3rd order LP (sub), 2nd order HP (top)
Product Dimensions (H×W×D) 89 × 483 × 257 mm
3.5 × 19 × 10.1 in
Carton Dimensions (H×W×D) 610 × 380 × 153 mm
24 × 15 × 6 in
Net Weight 12.1 kg / 27 lb 12.6 kg / 28 lb 120V model: 7 kg / 15.5 lb
230V model: 7.5 kg / 16.5 lb
Shipping Weight 13.2 kg / 29.1 lb 14.5 kg / 32 lb 120V model: 9.3 kg / 20.5 lb
230V model: 9.75 kg / 21.5 lb
Agency Approvals UL, CE, RoHS/WEEE Compliant
AC Current and Heating, 120 VAC
(multiply current by 0.5 for 230 VAC)
GX3 GX5 GX7
Operating Condition AC amps BTU/hour AC amps BTU/hour AC amps BTU/hour
Idle 0.2 44 0.3 60 0.6 82
8 + 8 ohms, 1/8 power 1 4.1 904 3.3 734 6.7 1169
8 + 8 ohms, 1/3 power 2 6.1 1160 8.5 1456 13.3 1807
8 + 8 ohms, full power 3 9.75 1109 16.2 1891 26.5 2167
4 + 4 ohms, 1/8 power 1 6.3 1515 5.8 1160 10.1 1963
4 + 4 ohms, 1/3 power 2 9.4 2105 11.2 2162 18.5 2612
4 + 4 ohms, full power 3 15.0 2297 24.5 3754 40 4478

1 1/8 power represents typical maximum operating conditions
2 1/3 power represents over-driven program levels
3 Full power is breaker limited to short periods
For 230 V, multiply AC current by 0.5
For 100 V, multiply AC current by 1.25

Downloads

GX_Series_Specs