Crest Audio CC4000 4000W Audio Professional Stereo Amplifier

All CC Series amplifiers are built with tunnel-cooled heat sinks, variable-speed DC fans and extensive protection circuitry for superior efficiency into difficult loads and power conditions. In the Crest Audio tradition, these robust amps also boast more power devices (16 per channel) than any competitive amplifier, plus a switched-rail class H output stage and triple-compound design to provide low distortion and excellent thermal stability. Based on powerful Pro 200. Series technology and utilizing a linear power supply, Crest Audio three versatile CC Series amps deliver stable high power output for running main systems, monitors and subwoofers. Crest Audio CC Series amplifiers are designed to achieve unsurpassed sonic performance and long-term reliability under extreme stress in touring or fixed installation applications. Absolute sonic accuracy is the hallmark of every Crest amplifier. Bass is solid and defined to the limits of audibility with ample current reserves. Wide-bandwidth output devices ensure detailed, transparent high frequency response. And, thanks to Crest's exclusive IGM circuit, the CC Series will drive 2Ohms loads safely without compromising performance. • Toroidal power transformer • Magnetic circuit breaker on/off switch • Cooled by variable speed fan with back-to-front airflow • Mode selector switch for stereo, parallel and bridged-mono operation • Inputs: Balanced female XLR, 1/4" TRS combi jacks • Outputs: Speakon and five-way binding posts • Recessed, stepped attenuators • 16-gauge steel chassis, cast aluminum front panel • Dual, variable speed fans on CC 2800, CC 4000 and CC 5500 single fan on model CC 1800 • Input sensitivity selection • Front panel circuit-breaker switch Construction and Quality Control Designed for years of reliable, flawless operation under rigorous use. The CC Series amplifiers offer the sonic superiority and unsurpassed reliability for which Crest Audio is famous, while remaining surprisingly compact. Advanced technology and extensive protection circuitry allow operation with greater efficiency into difficult loads and power conditions. Each assembly is pre-tested and the assembled CC receives a rigorous "hot room" burn-in before thorough final checkout on precision test equipment. Tourclass/Protection Circuits ACL (Active Clip Limiting) prevents speaker damage by providing gentle gain reduction when the signal approaches the clipping threshold. IGM (Instantaneous Gain Modulation) monitors speaker loads to detect conditions that may overstress output devices. This allows safe operation into nominal 2Ohms speaker loads. AUTORAMP gradually increases gain to the attenuator level settings when the amplifier is turned on. This prevents abrupt turn-on level. Other protection features include: short circuit, DC voltage, comprehensive thermal management and current in-rush turn-on/ off; transient sub-sonic input.