The QSC GX7 Power Amp is ideal for professional entertainers who require good performance on a reasonable budget. The power levels are matched to the most popular speakers used by entertainers giving real-world headroom into 4 and 8 ohm speaker systems. This lightweight easy to use power amp provides excellent audio quality and reliability.
GX Series GX Series amplifiers are ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers headed by Pat Quilter have optimised output and appearance while reducing raw material cost and weight. Its all here – dramatic styling easy hook-up and adjustments excellent audio quality and QSC reliability. Power GX amplifiers deliver just the right amount of power to the most popular speakers used by entertainers. Typically loudspeaker manufacturers recommend an amplifier with power output equal to the speakers Program (Music) Power rating or two times (2 x) the Continuous (RMS) Power rating. The GX7 provides full performance for 500 watt (Program) speakers. Thermal Efficiency The GX7 uses a Class H system based on key elements of the PL Series (PLX PL3 CX DCA) almost doubling power in the same size and weight. QSC design expertise allows the output devices to shift from low-power to high-power rails in less than a millionth of a second ensuring that the output power is always right where it needs to be without excess loss. The amplifier uses premium toroidal power transformers for reliable mid-weight performance. A variable-speed fan moves air crosswise through the amplifier drawing cool air in over the power transformer through the fan and then over the heat sink. This keeps the transformer cool and allows a full size heat sink to fit in a down-sized chassis. As always the amplifiers are fully protected from the usual hazards of the trade ensuring stable performance and long life. GuardRail GuardRail protection delivers full peak power while preventing detrimental overloads. During excessive clipping or extreme overheating GuardRail reduces gain just enough to preserve the integrity of the music protect the speakers and keep the audience excited without unprofessional distortion levels or shutdowns. Subwoofer/Satellite Crossover A subwoofer reduces strain on the full-range speaker allowing it to play louder or letting a smaller speaker do the same job. The GX Series supports this mode with a Crossover switch that splits the full-range input entering Ch 1 sending 20 Hz -100 Hz to the sub (Ch 1) and 100 Hz – 20 kHz to the top box (Ch 2). The front panel gain controls balance the sub and top box while GuardRail optimises peak power into the sub and top individually for greater musical impact and dynamic range. Features Power levels matched to the most popular speakers used by entertainers Optimized for maximum real-world headroom into 4 ohm and 8 ohm speaker systems Inputs: XLR 1/4″ TRS and phono input connectors for compatibility with any source Outputs: Speakon® combo accepts 1/4″ (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems Minimum depth chassis (10.1″/257 mm) fits in compact inexpensive effects racks Lightweight – only 7.5 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 Output Power Per Channel: 8 ohms / 1kHz (both channels driven): 725W 8 ohms / 1kHz (single channel driven): 800W 4 ohms / 1kHz (both channels driven): 1000W 4 ohms / 1kHz (single channel driven): 1200W Specifications: Distortion (1dB below rated power 1kHz): >0.02 at 8 ohms >0.05 at 4 ohms Signal to Noise (20Hz – 20kHz): 100dB Input Sensitivity: 1.2 Vrms Voltage Gain (8 ohms): 36.1dB Output Circuitry: 2-tier Class H Frequency Response: 20Hz – 20kHz +0 -1dB Dynamic Headroom (4 ohms): 2dB Input Impedance: Greater than 20k ohms (balanced) Maximum Input Level: +24dB (16 Vrms) Input Connectors (each channel): 3-pin XLR and 1/4″ TRS balanced parallel / Phono unbalanced Output Connectors (each channel): Speakon 1/4″ 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) Dimensions: HWD 3.5″ (89 mm) 2RU x 19″ (483 mm) x 10.1″ (257 mm) Weight: 120V model: Net: 15.5 lb (7 kg) Shipping: 20.5 lb (9.3 kg) / 230V model: Net: 16.5 lb (7.5 kg) Shipping: 21.5 lb (9.75 kg) Agency Approvals: UL CE RoHS/WEEE Compliant .tg border-collapse:collapse;border-spacing:0; .tg td font-family:Arial sans-serif;font-size:14px;padding:3px 0px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal; .tg th font-family:Arial sans-serif;font-size:14px;font-weight:normal;padding:3px 0px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal; .tg .tg-glis font-size:10px .tg .tg-d3l3 font-weight:bold;font-size:10px;text-align:center .tg .tg-7dqz font-weight:bold;font-size:10px .tg .tg-gozu font-size:10px;text-align:center .tg .tg-4d2x font-style:italic;font-size:10px;text-align:center AC Current and Heating 120 VAC(multiply current by 0.5 for 230 VAC) GX7 Operating Condition AC amps BTU/hour Idle 0.6 82 8 + 8 ohms 1/8 power 1 6.7 1169 8 + 8 ohms 1/3 power 2 13.3 1807 8 + 8 ohms full power 3 26.5 2167 4 + 4 ohms 1/8 power 1 10.1 1963 4 + 4 ohms 1/3 power 2 18.5 2612 4 + 4 ohms full power 3 40 4478 1 1/8 power represents typical maximum operating conditions 2 1/3 power represents overdriven 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 QSC PA-DJ-and-Lighting GBQ
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QSC GX7 Entertainer Power Amplifier