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GX Series SPECIFICATIONS GX3 GX5 8 ohms / 1 kHz (both channels driven) 300 W 500 W 8 ohms / 1 kHz (single channels driven) 350 W 600 W 4 ohms / 1 kHz (both channels driven) 425 W 700 W 4 ohms / 1 kHz (single channels driven) 500 W 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) 32.2 dB 34.4 dB Output Circuitry Class B 2-tier Class H Power Requirements (1/8 power, pink noise at 4 ohms, 120V) 6.3A 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 and 1/4" TRS, balanced, parallel
Phono, unbalanced Output Connectors (each channel) Speakon®, 1/4", 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" (89 mm) 2RU
Width: 19" (483 mm)
Depth: 10.1" (257 mm) Weight Net: 25 lbs (11.5 kg)
Shipping: 30 lbs (13.5 kg) Net: 26 lbs (12 kg)
Shipping: 31 lbs (14 kg) Agency Approvals UL, CE, RoHS/WEEE Compliant AC Power Consumption

AC Current and Heating, 120 VAC
	GX3		GX5
Operating Condition	AC amps	BTU / hr	AC amps	BTU / hr
Idle	0.2	44	0.3	60
8 + 8 ohms, 1/8 power 1	4.1	904	3.3	734
8 + 8 ohms, 1/3 power 2	6.1	1160	8.5	1456
8 + 8 ohms, full power 3	9.75	1109	16.2	1891
4 + 4 ohms, 1/8 power 1	6.3	1515	5.8	1160
4 + 4 ohms, 1/3 power 2	9.4	2105	11.2	2162
4 + 4 ohms, full power 3	15.0	2297	24.5	3754

¹ 1/8 power represents typical operating conditions
² 1/3 power represents peak program levels
³ Full power is breaker limited to short periods
For 230 V, multiply AC current by 0.5
For 100 V, multiply AC current by 1.25

QSC Audio GX3 Amplifier Downloads

QSC Audio Website Link

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