QSC GX3 Power Amplifier in good condition.
Power levels matched to the most popular speakers. Inputs: XLR, 1/4″ 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
| SPECIFICATIONS | GX3 | |||||
| Output power per channel | ||||||
| 8 ohms / 1 kHz (both channels driven) | 300 W | |||||
| 8 ohms / 1 kHz (single channel driven) | 350 W | |||||
| 4 ohms / 1 kHz (both channels driven) | 425 W | |||||
| 4 ohms / 1 kHz (single channel driven) | 500 W | |||||
| Distortion (1 dB below rated power, 1 kHz) | 8 ohms: less than 0.02% 4 ohms: less than 0.05% |
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| 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 |
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| 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 |
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| 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 |
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| Rear Panel Controls | Full Range / Crossover switch 100 Hz, 3rd order LP (sub), 2nd order HP (top) |
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