QSC GXD 4 User Manual - Specifications
13 (DRAFT 2015/20/07)
SP
SP
FR
FR
DE
DE
CH
CH
AR
AR
TD-000450-01-A
Specifications
GXD 4
GXD 8
Stereo Mode - watts per channel
8Ω dynamic, both channels driven
4Ω dynamic, both channels driven
8Ω continuous, both channels driven
4Ω continuous, both channels driven
600 watts
800 watts
400 watts
600 watts
1500 watts
2250 watts
800 watts
1200 watts
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
Voltage Gain (8Ω)
33.5 dB
36.5 dB
Output Circuitry
Class D
Class D
Power Requirements: 1/8 power at 4Ω
- 100 Vac
- 120 Vac
- 230 Vac
3.4 Amps
2.9 Amps
1.6 Amps
6.2 Amps
5.6 Amps
3.2 Amps
Frequency Response (20 Hz – 20 kHz)
+0.7 dB, -0.8 dB
Dynamic Headroom (4Ω)
1.25 dB
2.73 dB
Damping Factor
100
Input Impedance (Ω)
20k (balanced), 10k (unbalanced)
Maximum Input Level
+23.5 dBu
Input Connectors (each channel)
3-pin XLR/F / 1/4" TRS, balanced
Output Connectors (each channel)
NL4 (Channel 1 - 1+/-, Channel 2 - 2+/-), binding posts
Amplifier and Load Protection
Short circuit, open circuit, thermal, RF protection
Load protected against DC faults
Front Panel Controls and Indicators
2 x Rotary Encoders
3 x Operational buttons (HOME, ENTER, EXIT)
2 x Green Signal LEDs, indicate signal presence
2 x Red A/D Clip LEDs, indicate input over-drive and/or amplifier current clipping
Blue Power LED ring, AC on
2.12" x 1.0", 256 x 128 pixel LCD
DSP Functions
High Pass Filter, 4th order LR, adjustable Frequency 20 Hz to 4 kHz
Low Pass Filter, 4th order LR, adjustable Frequency 60 Hz to 4 kHz
4-band PEQ, with variable Frequency, Gain, and Bandwidth
Peak Limiter, with Power, Aggressiveness, and Impedance selection
Delay 50 msec max.
Dimensions (HWD)
89 mm (2 RU) x 483 mm x 259 mm (3.5" x 19" x 10.2")
Weight - Net
5.1 kg (11.3 lb)
6.0 kg (13.2 lb)
Weight - Shipping
7.0 kg (15.4 lb)
7.8 kg (17.3 lb)
Agency Approvals
UL, CE, RoHS/WEEE compliant