FEATURES


Power levels matched to the most popular speakers used by entertainers 
Optimized for maximum real-world headroom into 4 ohm and 8 ohm speaker systems 
Inputs: XLR, 1/4" TRS and phono input connectors for compatibility with any source 
Outputs: Speakon® combo accepts, 1/4" (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems 
Minimum depth chassis (10.1"/257 mm) fits in compact, inexpensive effects racks 


Lightweight - GX3 and GX5 less than 26 lbs (12.5 kg). GX7 only 15.5 lbs (7 kg)* 
Detented gain controls for precise setting and matching of sensitivity 
GuardRail™ automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show 
Front panel LEDs monitor Power, Signal and Clipping 
Subwoofer/Satellite crossover built-in 
* 230V 16.5 lbs (7.5 kg)
 




SPECIFICATIONS
GX3
GX5
GX7

 
Watts per channel

8 ohms / 1 kHz (both channels driven)
300 W
500 W
725 W

8 ohms / 1 kHz (single channel driven)
350 W
600 W
800 W

4 ohms / 1 kHz (both channels driven)
425 W
700 W
1000 W

4 ohms / 1 kHz (single channel driven)
500 W
850 W
1200 W

Distortion (1 dB below rated power, 1 kHz) 
8 ohms: less than 0.02%
4 ohms: less than 0.05%

Signal to Noise (20 Hz - 20 kHz)
100 dB

Input Sensitivity
1.2 Vrms

Voltage Gain (8 ohms)
32.2 dB
34.4 dB
36.1 dB

Output Circuitry
Class B
2-tier Class H
2-tier Class H

Power Requirements (1/8 power, pink noise at 4 ohms, 120V)
6.3A
6A
10.1A

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 dBu (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: 27 lbs (12.1 kg)
Shipping: 31 lbs (14.1 kg)
Net: 28 lbs (12.6 kg)
Shipping: 32 lbs (14.6 kg)
120V model:
Net: 15.5 lbs (7 kg)
Shipping: 20.5 lbs (9.3 kg) 
230V model:
Net: 16.5 lbs (7.5 kg)
Shipping: 21.5 lbs (9.75 kg)

Agency Approvals
UL, CE, RoHS/WEEE Compliant

AC Current and Heating, 120 VAC
GX3
GX5
GX7

Operating Condition
AC amps
BTU/hr
AC amps
BTU/hr
AC amps
BTU/hr

Idle
0.2
44
0.3
60
0.6
82

8 + 8 ohms, 1/8 power 1
4.1
904
3.3
734
6.7
1169

8 + 8 ohms, 1/3 power 2
6.1
1160
8.5
1456
13.3
1807

8 + 8 ohms, full power 3
9.75
1109
16.2
1891
26.5
2167

4 + 4 ohms, 1/8 power 1
6.3
1515
5.8
1160
10.1
1963

4 + 4 ohms, 1/3 power 2
9.4
2105
11.2
2162
18.5
2612

4 + 4 ohms, full power 3
15.0
2297
24.5
3754
40
4478

 
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