DISC QSC GXD 8 Power Amplifier

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The GXD Amplifier Series

QSC's GXD amplifiers boast long-term reliability combined with professional audio quality. Integral signal processing and an intuitive design make it easy to achieve incredible sound. Multiple routing options and versatile DSP are housed securely in a lightweight, stylish enclosure. With advanced protection circuitry and QSC's hallmark construction, each GXD amplifier ensures outstanding performance each and every time you use it.

Each GXD amplifier is designed to deliver the perfect amount of power to the most popular speakers in the entertainment and production industries. This powerful series of amplifiers is optimised for use with both 4 and 8 Ohm speaker loads, whilst powerful DSP tunings enable you to maximise the performance of QSC E Series loudspeakers. With flexibility and accessibility on tap, GXD amplifiers are the perfect solution for any system.

E-Series Entertainment System

Each of QSC's E Series loudspeakers are designed to deliver incredible sound with any pro-grade power amp. However, if you take advantage of a complete E Series Entertainment System with a GXD/PLD power amp or TouchMix digital mixer, you gain access to a whole new world of performance capabilities and options.

E Series DSP settings have been meticulously designed to maximise the performance of your E Series loudspeakers, and come pre-loaded on each GXD amplifier. These tunings support a broad range of situations, including live sound reinforcement, stage monitoring, DJ systems, karaoke and more.

Optimised power points

Thanks to a vast amount of research and development, QSC have created a series of amplifiers that are a perfect fit for the most popular systems used in a wide range of environments. Designed with particular power points in mind, GXD amps are ideal for a broad range of systems.

When an amp produces too little power, your speakers won't perform to the full-extent of their capabilities. When an amp has too much, it generally comes at greater expense to you. The GXD 4 (1600W peak) and GXD 8 (4500W peak) provide the perfect amount of power for the most popular loudspeakers and PA systems in the entertainment and production industries - reliable and affordable power with minimal wastage.

Advanced digital signal processing

Full loudspeaker processing in a convenient and versatile format. GXD amplifiers feature advanced DSP designed to get the best out of your system. This powerful series provides you with a plethora of features and adjustability to get the sound you crave at a whole new price point.

24dB Linkwitz-Riley HPFs and LPFs, 4-band parametric equalisation, signal alignment delay, and RMS/Peak limiting. Each amplifier gives you powerful tools for professional sound and efficient operation. Twenty handy factory presets provide you with a range of effective starting points which you can easily modify to suit your needs.

Features

• Huge peak output power - up to 4500 Watts
• Power levels matched to the most popular loudspeakers and optimised for maximum real-world headroom into 4 Ohm and 8 Ohm speaker systems
• Class-D output stage with a universal power supply for high performance and efficiency
• Extensive and powerful loudspeaker processing including High & Low-Pass filters, 4-band PEQ, Limiting, and Delay
• Large LCD display simplifies amplifier setup and indicates amp status
• Parallel XLR and 1/4" TRS inputs for compatibility with any source while providing convenient loop-thru capability
• Precision rotary encoders for gain and DSP parameter control
• Professional binding post and NL4 outputs (compatible with NL2) 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

• Power Specifications:
  • Dynamic - Both Channels Driven:
    • 8 Ohms: 1500W per channel
    • 4 Ohms: 2250W per channel
  • Continuous - Both Channels Driven:
    • 8 Ohms: 800W per channel
    • 4 Ohms: 1200W per channel
• Typical Distortion: <1 percent THD (1kHz at full rated power)
• Signal to Noise: 100dB (A-weighted, 20Hz - 20kHz)
• Input Sensitivity: 1.2Vrms, 3.9Vrms
• Maximum Voltage Gain: 36.5dB
• Output Circuitry: Class-D
• Power Requirements: 1/8 power at 4 Ohms
  • 100VAC: 6.2A
  • 120VAC: 5.6A
  • 230VAC: 3.2A
• Frequency Response: 20Hz - 20kHz / +0.7dB, -0.8dB
• Dynamic Headroom: 2.73dB (4 Ohms)
• Damping Factor: 100 (8 Ohms)
• Input Connectors: (Each channel)
  • 3-pin XLR/F (balanced)
  • 1/4'' TRS (balanced)
• Output Connectors: (Each channel)
  • NL4
  • Binding posts
• Amplifier and Load Protection:
  • Short circuit
  • Open circuit
  • Thermal
  • RF protection
  • Load protected against DC faults
• Front Panel Controls and Indicators:
  • 2 x rotary encoders
  • 3 x operational buttons (HOME, ENTER, EXIT)
  • 2 x green signal LEDs indicate signal presence
  • 2 x red A/D clip LEDs indicate input over-drive and/or amplifier current clipping
  • Blue power LED ring indicates AC on
  • 2x12'' x 1'' / 256 x 128 pixel LCD
• DSP Functions:
  • High-pass filter (4th-order Linkwitz-Riley, frequency adjustable from 20Hz to 4kHz)
  • Low-pass filter (4th-order Linkwitz-Riley, frequency adjustable from 60Hz to 4kHz)
  • 4-band parametric EQ with variable frequency, gain, and bandwidth
  • Peak limiter with power, aggressiveness, and impedance selection
  • Delay 50msec maximum
• Agency Approvals:
  • UL
  • CE
  • RoHS/WEEE compliant
• Dimensions: 3.5'' x 19'' x 10.2'' / 89mm x 483mm x 259mm (2RU) (H x W x D)
• Weight: 6.0kg / 13.2lbs