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QSC GX5 Stereo Power Amplifier

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A fantastic "bang for the buck" power amp.
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Product Description

The QSC GX5 Stereo Power Amplifier is ideal for professional entertainers who require maximum performance and portability on a limited budget. QSC designers, headed by Pat Quilter, have optimized output and appearance while reducing raw material cost and weight. It’s all here – dramatic styling, easy hookup and adjustments, excellent audio quality and QSC reliability.

Purchase a GX Series Amplifier from AMS and Recieve QSC's
QSC 6 Year Extended Warranty
after registering your product at QSC.com

QSC GX5 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-inch TRS and phono input connectors for compatibility with any source
  • Outputs: Speakon combo accepts, 1/4-inch (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 inches/257 mm) fits in compact, inexpensive effects racks
  • Lightweight – less than 26 lbs (12.5 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-inGX Entertainer
GX amplifiers deliver just the right amount of power to the most popular speakers used by entertainers. Most loudspeaker manufacturers recommend an amplifier with power output equal to the speaker’s Program (Music) Power rating or two times (2 x) the Continuous (RMS) Power rating. The GX5 supplies maximum possible power to 4 ohm and 8 ohm loads. Owners of popular 4 ohm loudspeakers (dual-woofer, two-way models and many subwoofers) will find the 700 watt (4 ohm) power of the GX5 an ideal match.

Technical Notes
A true Class B biasing system combines maximum thermal efficiency with excellent audio performance. 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 optimizes peak power into the sub and top individually, for greater musical impact and dynamic range.

Product Specifications
QSC GX5 Power Amplifier Specifications
  • Power
    • 8 ohms / 1 kHz (both channels driven) 500 W
    • 8 ohms / 1 kHz (single channels driven) 600 W
    • 4 ohms / 1 kHz (both channels driven) 700 W
    • 4 ohms / 1 kHz (single channels driven) 850 W
  • Distortion (typical) 20 Hz - 20 kHz, 1 dB below rated power
    • 8 ohms: less than 0.05%
    • 4 ohms: less than 0.1%
  • Signal to Noise (20 Hz - 20 kHz): 100 dB
  • Input Sensitivity: 1.2 Vrms
  • Voltage Gain (8 ohms): 34.4 dB
  • Output Circuitry: 2-tier Class H
  • Power Requirements (1/8 power, pink noise at 4 ohms, 120V): 6A
  • Frequency Response: 20 Hz - 20 kHz, +0, -1 dB
  • Dynamic Headroom (4 ohms): 2 dB
  • Input Impedance (ohms): Greater than 20k (balanced)
  • Maximum Input Level: +24 dB (16 Vrms)
  • Input Connectors (each channel):
    • 3-pin XLR (balanced)
    • 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
    • Blue Power LED, AC on
  • Rear Panel Controls:
    • Full Range/Crossover switch (100 Hz)
    • 3rd order LP (sub)
    • 2nd order HP (top)
  • Dimensions:
    • Height: 3.5 inches (89 mm)
    • Width: 19 inches (483 mm)
    • Depth: 10.1 inches (257 mm)
  • Weight:
    • Net: 26 lbs (12 kg)
    • Shipping: 31 lbs (14 kg)
  • Agency Approvals: UL, CE, RoHS/WEEE Compliant


Helpful Info about the Manufacturer
Phone:  800-772-2834 Warranty:  3 Years on New Amps; B-Stock is 1 (one) Year only!
BAD RIVER BAND from BRIDGEPORT MICHIGAN
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Features
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Subject
AMS Rocks
Quality
Would you consider this product to be made well? How dependable?
SEEMS TO BE WELL BUILT, I HAVE ONLY DONE ONE SHOW WITH IT SO FAR BUT IT SOUNDED GREAT AND I HAD NO PROBLEMS WITH IT
Features
What do you consider to be the best features of this product? What features would you add to this product if you could?
tHE SOUND IS GREAT, THE SIZE AND WEIGHT ARE NICE, THE BUILT IN CROSSOVER IS HANDY TOO, THE ONLY THING THAT IT LACKS IS BRIDGED MONO CAPABILLITY
Ease of Use
How easy is this product to use? How easy is the product to use with other products? Did it take long for you to learn to use this product? Was the manual helpful? How playable do you consider this product to be?
USEING THIS AMP IS STRAIGHT FORWARD, THE ONLY SLIGHTLY CONFUSING THING FOR A NOVICE MAY BE THE USE OF A JUMPER WIRE FOR PARRALLEL OPERATION
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