Description

QSC GX3 2 Channel Power Amplifier for Speakers 300 Watts Range

Power levels matched to the most popular speakers. Inputs: XLR, 1/4-inch TRS and phono. Outputs: Speakon® combo and binding posts.

Features:
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
* 230V 16.5 lb (7.5 kg)

Specifications:
Output power per channel
8Ω continous, both channels driven: 300 W
4Ω continous, both channels driven: 425 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
Output Circuitry: Class B
Power Requirements (1/8 power, pink noise at 4 ohms, 120V): 6.3 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
Shipping Weight: 13.2 kg / 29.1 lb
Agency Approvals: UL, CE, RoHS/WEEE Compliant
AC Current and Heating, 120 VAC
(multiply current by 0.5 for 230 VAC) GX3
Operating Condition AC amps BTU/hour
Idle 0.2 44
8 + 8 ohms, 1/8 power 1 4.1 904
8 + 8 ohms, 1/3 power 2 6.1 1160
8 + 8 ohms, full power3 9.75 1109
4 + 4 ohms, 1/8 power 1 6.3 1515
4 + 4 ohms, 1/3 power 2 9.4 2105
4 + 4 ohms, full power3 15.0 2297