QSC GXD4
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QSC GXD4

   
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SPECIFICATIONS GXD 4 GXD 8
8Ω dynamic, both channels driven 600 watts per channel 1500 watts per channel
4Ω dynamic, both channels driven 800 watts per channel 2250 watts per channel
8Ω continuous, both channels driven 400 watts per channel 800 watts per channel
4Ω continuous, both channels driven 600 watts per channel 1200 watts per channel
Distortion (typical)
1 kHz at full rated power
< 1% THD 
Signal to Noise 
(A weighted, 20 Hz–20 kHz)
100 dB 
Input Sensitivity 1.2 Vrms, 3.9 Vrms 
Maximum Voltage Gain 33.5 dB 36.5 dB
Output Circuitry Class D
Power Requirements 1/8 power at 4Ω
- 100 V AC 3.4 A 6.2 A
- 120 V AC 2.9 A 5.6 A
- 230 V AC 1.6 A 3.2 A
Frequency Response 
(20 Hz–20 kHz)
+0.7 dB, -0.8 dB
Dynamic Headroom (4Ω) 1.25 dB 2.73 dB
Damping Factor (8Ω) 100
Input Impedance 20 kΩ (balanced), 10 kΩ (unbalanced)
Maximum Input Level +23.5 dBu
Input Connectors 
(each channel)
3-pin XLR/F / 1/4-inch TRS, balanced
Output Connectors 
(each channel)
NL4, binding posts
NL4 pinout:
•  Channel A on 1+, 1-; Channel B on 2+, 2-
  Channel B on 1+, 1-
Amplifier and Load Protection Short circuit, open circuit, thermal, RF protection
Load protected against DC faults
Front Panel Controls and Indicators 2 × Rotary Encoders
3 × Operational buttons (HOME, ENTER, EXIT)
2 × Green Signal LEDs indicate signal presence
2 × Red A/D Clip LEDs indicate input over-drive and/or amplifier current clipping
Blue Power LED ring indicates AC on
2.12-inch × 1.0-inch, 256 × 128 pixel LCD
DSP Functions High-pass filter, 4th-order Linkwitz-Riley,
adjustable frequency 20 Hz to 4 kHz
Low-pass filter, 4th-order Linkwitz-Riley,
adjustable frequency 60 Hz to 4 kHz
4-band parametric EQ with variable frequency, gain, and bandwidth
Peak limiter with power, agressiveness, and impedance selection
Delay 50 msec max.
Dimensions (HWD) 3.5-inch (2 RU) × 19-inch × 10.2-inch (89 mm × 483 mm × 259 mm)
Weight (Net) 11.3 lb (5.1 kg) 13.2 lb (6.0 kg)
Weight - Shipping 15.4 lb (7.0 kg) 17.3 lb (7.8 kg)
Agency Approvals UL, CE, RoHS/WEEE compliant
Carton and Contents Power cable and quick start guide