Description

CREST CPX 900 Power Amplifier

CPX Series Power Amplifiers: Four rugged, ultra-affordable power designs in the great Crest Audio tradition. In typical Crest Audio fashion, we’ve over-built and over-engineered the CPX Series. We included built-in subwoofer crossovers, low-cut filters to prevent woofer cone flutter, fan cooling, Speakon output connectors and much, much more. Gain Comparator Limiting: When a signal has waveform peaks that exceed the amps’ power-supply rails, waveforms get chopped off, or “clipped.” This undesirable distortion most often happens when the amp is turned up too high (too much gain). GCL senses clipping or current limiting and dynamically reduces the gain for a few milliseconds. You can drive the CPX amp to its maximum and beyond without hearing audible distortion.

– 300 Watts per channel 4 Ohm Stereo
– 180 Watts per channel 8 Ohms Stereo
– 600 Watts 8 Ohm bridged
– Crest Audio’s patented GCL™ Gain Comparator Limiting System for maximum output without audible distortion
– two-speed demand-sensitive fan and Turbo Cooling heat dissipator design
– detented gain controls
– LEDs per channel: power, GCL and Signal Present
– built-in 150Hz/18dB/octave Subwoofer Crossover with 1/4″ TRS output
– current in-rush limiter
– over-heat, short circuit, clip limiting, faulty load and DC circuits protect your valuable sound reinforcement speakers and the CPX amplifier
– Inputs: barrier strip, balanced XLR and 1/4″ TRS inputs with signal pass-through
– Outputs: Neutrik® Speakon® and 5-way binding post outputs
– separate bridged outputs featuring Neutrik® Speakon® connector and resessed mode switch
– rear-panel GCL defeat switch
– rear rack supports
– 14-gauge steel chassis
– Mil-spec fiberglass circuit boards
– massive toroid transformer and storage capacitors

– Hum & Noise (Stereo mode Below rated output power, 4 ohms): 100 dB
– Input Sensitivity & Impedance (rated output power, 4 ohms): 0.87 V RMS (-1.2 dBV)
– Overall system gain per channel: 40x (+32 dB)
– Distortion (20 Hz to 20 KHz, 10dB below rated power): > 0.03%
– Frequency Response (+0,-1 dB @ 1W RMS, 4 ohms): 20 Hz – 20 kHz
– Damping Factor (8 ohms, 1 KHz): >300
– Topology: Class AB