QSC CX902 550-Watt Installation Power Amplifier

Designed to Meet the Specialized Needs of Sound Contractors - The QSC CX902 550-Watt Installation Power Amplifier

The CX Series is designed to meet the specialized needs of sound contractors. Eight 2-channel models have been designed from the ground up, combining the exclusive QSC PowerLight™ technology with specific features to meet the requirements of fixed installations. With high-output power, versatile loading options, high thermal capacity and unmatched reliability, the CX Series is the perfect solution to any permanently installed sound system

• 8 models to meet your exact power requirements •
• Exclusive PowerLight switch-mode power supply technology for high performance and compact size •
• Custom integrated security cover for tamper proof installations •
• Variable speed fan for low noise •
• 1 dB detented gain controls for fast and accurate gain settings •
• Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers •
• XLR and detachable Euro-style input connectors •
• HD15 DataPort connector for QSControl computer control or signal processing accessories •
• Dip switch control for clip limiters, high-pass filters, bridge-mono and parallel operation •
• Selectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (33 Hz or 75 Hz on non-V models, 50 Hz or 75 Hz on V models) •
• Comprehensive front panel indicators including signal, clip, protect and QSC’s exclusive bridge-mono and parallel input LEDs •
• Barrier strip output connector •
• Comprehensive protection circuitry including DC, infrasonic, thermal overload and short circuit protection •
• Class H complementary bipolar output circuitry for high efficiency (CX702, CX902, CX1102 & CX1202V) •
• Optional external transformer accessory pack for isolated 70 and 100 volt outputs (converts CX302 to 400 watts per channel isolated output) •
• Compact size – all models only 2 RU and 14" deep for reduced rack cost and floor space •
• Lightweight – all models only 21 pounds (9.5 kg) for easier racking and shipping •
• 3-year warranty plus optional 3-year extended service contract
  

SPECIFICATIONS

• Amplifier Power Rating:
  • 16 Ohms: 1100 W (Full Range, 0.1% THD)
  • 8 Ohms: 550 W (Full Range, 0.05% THD)
  • 140 V:
    • 800 W (Full Range, 0.1% THD)
    • 880 W (1 kHz, 0.05% THD)
    • 1200 W (1 kHz, 1% THD)
  • 70 V:
    • 400 W (Full Range, 0.05% THD)
    • 440 W (1 kHz, 0.05% THD)
    • 600 W (1 kHz, 1% THD)
• Amplifier Class: Class-AB, Class-B
• Performance Protections: DC Fault, On/Off Muting, Open Circuit, RF, Reactive/Mismatched Load, Short Circuit, Thermal, Ultrasonic
• Frequency Response: 20 Hz to 20 kHz ±0.2 dB, 8 Hz to 50 kHz +0/-3 dB
• Damping Factor: > 500
• Input Sensitivity: 1.26 Vrms
• Input Impedance: 6 Kilohms (Unbalanced), 12 Kilohms (Balanced)
• Max Gain: 35 dB (at 70 V)
• THD: < 0.01% (Full Range, at Rated Power -10 dB), < 0.01% (1 kHz, at Rated Power)
• Intermodulation Distortion: < 0.02% (SMPTE)
• Signal Processing:
  • Filters: High-Pass (33 Hz / 75 Hz)
  • Limiting: Clip
• Connectivity:
  • Analog Audio I/O: 2x Block 3-Pin Input, 1x Barrier Strip 6-Pin Output
  • Digital I/O: 1x DE-15/DB-15 DataPort Input
• Power:
  • AC Input Power: 120 VAC, 60 Hz
  • Current Consumption: 0.9 A (Idle), 8.7 A (1/8 Power), 13 A (1/3 Power)
• Physical Attributes:
  • Display & Indicators: 1x Red LED (Stereo Mode), 1x Yellow LED (Bridged Mode), 1x Green LED (Power), 1x Red LED (Clip/Protect, per Channel), 2x Yellow LED (Level, per Channel), 1x Green LED (Level, per Channel)
  • Cooling: Fan (Variable Speed), Heatsink
  • Dimensions: 19.0 x 3.5 x 14.0" / 48.3 x 8.9 x 35.6 cm
  • Weight: 21 lb / 9.5 kg
• Packaging Info:
  • Package Weight: 27 lb
  • Box Dimensions (LxWxH): 24 x 18.5 x 6"

We are Musictoner Musictoner

Since 1958, Chuck Levin’s Musictoner has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.