QSC 2 Channel 425W 2RU Power Amplifier

Features

• Power levels matched to the most popular speakers used by entertainers
• Optimized for maximum real-world headroom into 4- and 8-ohm speaker systems
• Inputs: XLR, 1/4-inch TRS and phono input connectors for compatibility with any source
• Outputs: Speakon® combo accepts 1/4-inch (TS) plugs or Speakon 2- and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems
• Minimum depth chassis (10.1-inch / 257 mm) fits in compact, inexpensive effects racks
• Lightweight - GX3 and GX5 less than 26 lb (12.5 kg). GX7 only 15.5 lb (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 lb (7.5 kg)

Specifications

Output power per channel
8Ω continuous, both channels driven	300 W
4Ω continuous, both channels driven	425 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 V rms
Voltage Gain	32.2 dB
Output Circuitry	Class B
Power Requirements (1/8 power, pink noise at 4 ohms, 120V)	6.3 A
Frequency Response	20 Hz–20 kHz, +0, -1 dB
Dynamic Headroom (4 ohms)	2 dB
Input Impedance	Greater than 20 kΩ (balanced)
Maximum Input Level	+24 dBu (16 V rms)
Input Connectors (each channel)	3-pin XLR and 1/4-inch TRS, balanced, parallel Phono, unbalanced
Output Connectors (each channel)	Speakon®, 1/4-inch, 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 below clipping Blue POWER LED, AC on
Rear Panel Controls	Full Range / Crossover switch 100 Hz, 3rd order LP (sub), 2nd order HP (top)
Product Dimensions (H×W×D)	89 × 483 × 257 mm 3.5 × 19 × 10.1 in
Carton Dimensions (H×W×D)	610 × 380 × 153 mm 24 × 15 × 6 in
Net Weight	12.1 kg / 27 lb
Shipping Weight	13.2 kg / 29.1 lb
Agency Approvals	UL, CE, RoHS/WEEE Compliant
AC Current and Heating, 120 VAC (multiply current by 0.5 for 230 VAC)	GX3
Operating Condition	AC amps	BTU/hour
Idle	0.2	44
8 + 8 ohms, 1/8 power 1	4.1	904
8 + 8 ohms, 1/3 power 2	6.1	1160
8 + 8 ohms, full power 3	9.75	1109
4 + 4 ohms, 1/8 power 1	6.3	1515
4 + 4 ohms, 1/3 power 2	9.4	2105
4 + 4 ohms, full power 3	15.0	2297