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¢ç, 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