QSC GXD4
Professional Power Amplifiers
As part of the E Series Entertainment System, the GXD amplifiers are ideal for entertainment and production applications. With integral signal processing and outstanding performance, the GXD amplifiers express all the hallmarks of the QSC brand – professional audio quality and long-term reliability. Add contemporary styling, multiple routing options, light weight,
digital signal processing and advanced protection circuitry, and the GXD Series clearly represents real value – something everyone can use. The GXD series is optimized for use with 8 and 4 ohm loudspeaker loads. GXD amplifiers deliver just the right amount of power to the most popular speakers used by entertainers and production professionals.
FEATURES
- High peak output power with up to 1600 watts from the GXD 4 and a whopping 4500 Watts from the GXD 8.
- Power levels matched to the most popular loudspeakers and optimized for maximum real-world headroom into 4Ω and 8Ω speaker systems.
- 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:
– Visit the GXD Firmware Updater to download and update
- 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
| Category | Specification |
|---|---|
| Output Power per Channel | |
| 8Ω Dynamic (both channels) | 600 W |
| 4Ω Dynamic (both channels) | 800 W |
| 8Ω Continuous (both channels) | 400 W |
| 4Ω Continuous (both channels) | 600 W |
| Distortion (1 kHz, 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 |
| Output Circuitry | Class D |
| Power Requirements (1/8 power @ 4Ω) | |
| – 100 V AC | 3.4 A |
| – 120 V AC | 2.9 A |
| – 230 V AC | 1.6 A |
| Frequency Response (20 Hz–20 kHz) | +0.7 dB, -0.8 dB |
| Dynamic Headroom (4Ω) | 1.25 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 | Ch A: 1+/1-, Ch B: 2+/2- and 1+/1- |
| Amplifier/Load Protection | Short circuit, open circuit, thermal, RF, DC fault |
| Front Panel Controls & Indicators | 2 Rotary Encoders, 3 Buttons (HOME, ENTER, EXIT), Signal LEDs, Clip LEDs, Power LED, LCD display |
| LCD Display | 2.12″ × 1.0″, 256 × 128 pixels |
| DSP Functions | High-pass & Low-pass filters (20–4kHz), 4-band PEQ, peak limiter, delay (max 50 ms) |
| Product Dimensions (H×W×D) | 89 × 483 × 259 mm (3.5 × 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 |
| Shipping Weight | 7 kg / 15.4 lb |
| Agency Approvals | UL, CE, RoHS/WEEE |
| Carton Contents | Power cable, Quick Start Guide |
Additional information
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