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QSC GX7

GX Series power amplifier — 725W x 2 at 8 ohms (non-bridgeable)

Item # 907GX7

You're working on a budget, but you still want a professional amplifier that offers advanced construction and...

You're working on a budget, but you still want a professional amplifier that offers advanced construction and...

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Discontinued item
2 questions - 2 answers

Item # 907GX7

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About the QSC GX7

QSC quality at a workingman's price

You're working on a budget, but you still want a professional amplifier that offers advanced construction and reliability. QSC's GX Series amplifiers feature advanced protection circuitry that keeps things running smoothly, and their multiple signal routing options make it easy to adapt the amp to any job at hand. And the special light-weight design of the GX7 won't weigh down your rack, so life at the end of a show is just a little bit easier.

QSC quality at a workingman's price

You're working on a budget, but you still want a professional amplifier that offers advanced construction and reliability. QSC's GX Series amplifiers feature advanced protection circuitry that keeps things running smoothly, and their multiple signal routing options make it easy to adapt the amp to any job at hand. And the special light-weight design of the GX7 won't weigh down your rack, so life at the end of a show is just a little bit easier.

QSC GX7 2-channel amplifier

This sturdy amp will deliver reliable power, night after night.

Plenty of power

The 2-channel GX7 amplifier delivers 725 watts per channel to an 8-ohm load, and up to 1000 watts per channel with a 4-ohm load. If you're powering a sub, the GX7's crossover switch allows you to use channel 1 to power your sub and channel 2 to power your full-range speaker. You'll find two gain controls on the front panel, along with red clip LEDs, green signal LEDs, and blue power LEDs.  

Ins and outs

On the rear panel, you'll find XLR, 1/4" TRS, and phono inputs, along with Speakon®/1/4" TS combo jacks and binding posts for your outputs. QSC's GuardRail™ circuitry senses clipping and reduces gain accordingly so the amp keeps playing without a performance-killing shutdown. Meanwhile, a variable-speed fan and healthy heat sink keep things cool, so you can push this amp hard without a worry.

READ LESS

Highlights:

    General Information:
    • 2-channel power amplifier
    • power rating:
      • 725 watts per channel at 8 ohms
      • 1000 watts per channel at 4 ohms
    • frequency response: 20-20,000 Hz
    • signal-to-noise: 100 dB
    Features:
    • front-panel LEDs indicate power, active status, and clipping
    • GuardRail circuitry senses clipping and reduces gain
    • sub/satellite crossover: high-pass/low-pass filters at 100 Hz
    • DC voltage, short circuit, thermal, and current limiting protection
    Connections:
    • inputs: XLR, 1/4" TRS, phono
    • outputs: Speakon/1/4" TS combo jacks, binding posts
    Other Information:

    What's in the box:

    • 2-Channel power amplifier
    • 8' AC power cord
    • 4 Rubber feet
    • "Hookup Drawing" sheet
    • Product Warranty/Registration Card

    Customer reviews

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    QSC GX7 reviews

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    More details on the QSC GX7

    Russ B.

    Features & specs

    General
    Number of Channels 2
    Power Class H
    Watts per channel 8 ohms 725
    Watts per channel 4 ohms 1000
    Watts per channel 2 ohms 600
    Watts bridged ---
    Fan cooled Y
    DSP N
    Filters N
    Rack spaces 2
    Height (inches) 3-1/2
    Depth (inches) 10-1/8
    Width (inches) 19
    Weight 15.5 lbs
    Inputs
    RCA 1
    1/4" 2
    XLR 2
    Outputs
    1/4" 2
    Binding post 4
    Spring post ---

    Product Research

    Features

    Two-Channel Amplifier: The QSC GX series GX7 two-channel amplifier is rated a 725W x 2ch (8Ω), 1000W x 2ch (4Ω). or 600W x 2ch (2Ω). A 2-ohm load is not recommended for high power use; to avoid protective limiting, use only at low levels.

    Balanced & Unbalanced Inputs: The QSC GX series amplifier features a pair of balanced XLR inputs, a pair of 1/4" jacks that will accept either balanced TRS or unbalanced TS inputs, and a pair of unbalanced RCA jacks. The balanced inputs can be used for long or short runs, while the unbalanced inputs should only be used for short runs. The XLR and TRS jacks are connected internally and provide feed-thru to the other connector.

    Speaker Outputs: The GX series amplifier is fitted with a pair of Speakon combo speaker terminals and two pair of binding post speaker terminals. The Speakon combo terminals will accept a 2-pole Speakon connector or 1/4" TS jack. The binding post terminals will accept bare wire, banana plugs, pin-connectors and spade-connectors.

    Independent Gains Controls: The GX series amplifier offers independent gain controls for Ch 1 and Ch 2. The detented gain controls provide precise setting and matching of sensitivity.

    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" speaker (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. GuardRail optimizes peak power into the sub and top individually, for greater musical impact and dynamic range.

    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.

    Front-Panel LEDs: Front panel LEDs monitor Power, Signal and Clipping

    • Red: Red flashing LEDs indicate the amp is being overdriven. Heavy overdrive triggers internal gain reduction, to reduce overload distortion. Normal gain will resume after the signal level returns to normal.
    • Green: The green LED starts flashing on soft signals (-35 dB), and changes to steady green as the signal level increases.
    • Blue: The blue Power LED indicates that the AC switch is on, and the amp is receiving power. Within two seconds, it is ready to use.

    Cooling Fan & Vents: The internal fan moves air through the chassis and out of its front- and rear-panel vents to reduce temperature rise. Keep vents clear. The fan speeds up in response to heavy use.

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    Customer Q&A

    2 questions already asked

    Q
    Regarding the GX3/5/7. If I am using a device such as a dbx DriveRack, I would set the switch on the back of the amp to "Full Range" and that would by-pass the internal crossover and whatever is input on Ch1/Ch2 would be output on Ch1/Ch2. Correct??
    [ Jason  Apr 24, 2019 ]
    1 answer
    A
    If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
    [ Krissy  May 06, 2019 ]  Staff
    Q
    Can the QSC gx7 power amplifier be played in Bridge mono mode?
    [ Henry  May 26, 2017 ]
    1 answer
    A
    I checked in with one of our Pro Audio experts and they said the GX series of amps cannot be bridged. If you are looking for one that can feel free to give them a quick call at 800-555-9369
    [ Jeff  Jun 01, 2017 ]  Staff

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