QSC GXD4 (Light weight, class-D professional power amplifier)

Description

Features
Class D output stage with a universal power supply for high performance and efficiency.
Extensive and powerful loudspeaker processing built in. Includes high and low-pass filters, 4-band parameteric EQ, limiting, and delay.
E Series Entertainment System DSP Tunings are now available for GXD processing amplifiers:

Large LCD display simplifies amplifier setup and indicates amp status.
Inputs: Parallel XLR and 1/4-inch TRS connectors for compatibility with any source while providing convenient loop-thru capability.
Precision rotary encoders for gain and DSP parameter control.
Outputs: Professional binding post and NL4 connectors (compatible with NL2) provide for mono and bi-amp speaker connections.
Digital limiting automatically protects the amplifier from damage due to temperature rise or overdrive.
Adjustable speaker protection to match your loudspeaker’s power and impedance.
Front panel LEDs indicate signal presence, input overload, and amplifier clipping.

SPECIFICATIONS
8Ω dynamic, both channels driven 600 W 1500 W
4Ω dynamic, both channels driven 800 W 2250 W
8Ω continuous, both channels driven 400 W 800 W
4Ω continuous, both channels driven 600 W 1200 W
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 Maximum Voltage Gain 33.5 dB 36.5 dB Output Circuitry Class D Power Requirements 1/8 power at 4Ω - 100 V AC 3.4 A 6.2 A - 120 V AC 2.9 A 5.6 A - 230 V AC 1.6 A 3.2 A Frequency Response (20 Hz–20 kHz) +0.7 dB, -0.8 dB Dynamic Headroom (4Ω) 1.25 dB 2.73 dB Damping Factor (8Ω) 100 Input Impedance 20 kΩ (balanced), 10 kΩ (unbalanced) Maximum Input Level +23.5 dBu Input Connectors (each channel) 3-pin XLR/F / 1/4-inch TRS, balanced Output Connectors (each channel) NL4, binding posts NL4 pinout: • Channel A on 1+, 1-; Channel B on 2+, 2- • Channel B on 1+, 1- Amplifier and Load Protection Short circuit, open circuit, thermal, RF protection Load protected against DC faults Front Panel Controls and Indicators 2 × Rotary Encoders 3 × Operational buttons (HOME, ENTER, EXIT) 2 × Green Signal LEDs indicate signal presence 2 × Red A/D Clip LEDs indicate input over-drive and/or amplifier current clipping Blue Power LED ring indicates AC on 2.12-inch × 1.0-inch, 256 × 128 pixel LCD DSP Functions High-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 20 Hz to 4 kHz Low-pass filter, 4th-order Linkwitz-Riley, adjustable frequency 60 Hz to 4 kHz 4-band parametric EQ with variable frequency, gain, and bandwidth Peak limiter with power, agressiveness, and impedance selection Delay 50 msec max. Product Dimensions (H×W×D) 89 × 483 × 259 mm 3.5 (2 RU) × 19 × 10.2 in Carton Dimensions (H×W×D) 600 × 370 × 153 mm 23.6 × 14.6 × 6 in Net Weight 5.1 kg / 11.3 lb 6 kg / 13.2 lb Shipping Weight 7 kg / 15.4 lb 7.9 kg / 17.4 lb Agency Approvals UL, CE, RoHS/WEEE compliant Carton and Contents Power cable and quick start guide