QSC GXD 4

Power Amplifier

  • Very low installation depth: 259 mm
  • Weight: Only 5.1 kg
  • Power: 2x 600 W at 4 ohms
  • Hi-peak power up to 1600 W
  • Class-D output circuitry
  • Large, backlit 256p x 128p LC display
  • 2 Rotary encoders and 3 buttons for quick access
  • High-pass filter, 4th-order Linkwitz-Riley, adjustable frequency of 20 Hz up to 4 kHz
  • Low pass filter, 4th-order Linkwitz-Riley, adjustable frequency of 60 Hz up to 4 kHz
  • 4-Band parametric EQ with frequencies
  • Variable gain and bandwidth
  • Peak limiter: Protects the loudspeaker via the input of all individual power- and impedance data
  • Delay: Max. 50 ms
  • Digital gain: +10 dB / -100 dB
  • 20 Presets for the most popular speaker configurations, adjustable
  • Status LEDs: 2x Green: Signal / 2x Red: A/D Clip/1x Blue: Indicates AC on
  • Inputs: 2x XLR and 2x 6.35 mm stereo jack
  • Outputs: 2x NL4, lockable (NL2 compatible) and 2x binding posts
  • Mono- or bi-amping connector
  • Protected circuit design and thermal protection
  • Power supply secured in case of instable power supply
  • Removable power cable (C13/safety plug)
  • Dimensions (W x H x D): 483 x 89 x 259 mm
  • Design: 19", 2U

Further information

Power (4 Ohms) per Channel 600 W
Channels 2
Rack Units 2 U
2 Ohm stable No
DSP/Frequency Yes
Convection cooling No

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6 customer ratings:
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4.3 / 5.0
  • handling
  • features
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5 written ratings Read all reviews
Total
features
handling
sound
quality

Great for install

colbee, 02.06.2017
These have just replaced two ageing crown XLS amps in an install. These amps are feature rich for install work with simple limiting, a good selection of DSP options and very importantly, the ability to lock out the front panel, including the gain pots.

I think the fans are thermally controlled, so they are not running all the time - again ideal for installs. And of course the Thomann 3 year warranty! Very satisfied.
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Total
handling
features
sound
quality

ok, but some of the details that are boring

kalagan, 15.02.2018
Question criteria, I bought this amp for parametric EQ 4 bands and its ventilation rather silent (to see with the time).

This EQ avoids the classic Graphic EQ input. 4 parametric bands are usually enough to adjust the sound of the speaker, but it is a little limited adjustment side and there is no mute to make a comparison.

Unfortunate: When it is turned off with the button of the amp (not very solid feeling) we have a TIC (HF) in the speakers, and if it is turned off by an external switch has a POP (BF).

Side amplification, it seems consistent with the spec.
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