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"cent; circuit, the CC Series will drive 2Ω loads safely without compromising performance. FeaturesToroidal power transformerDual, variable speed fans on CC 2800, CC 4000, and CC 5500 single fan on model CC 1800Balanced XLR inputsSpeakon® and 5-way binding post speaker outputsMode selector switch for stereo, parallel and bridged-mono operationInput sensitivity selectionRecessed, stepped attenuatorsFront panel circuit-breaker switchFive year warrantyTOURCLASS/PROTECTION CIRCUITSACL"cent; (Active Clip Limiting) prevents speaker damage by providing gentle gain reduction when the signal approaches the clipping threshold.IGM"cent; (Instantaneous Gain Modulation) monitors speaker loads to detect conditions that may overstress output devices. This allows safe operation into nominal 2Ω speaker loads.AUTORAMP"cent; 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.SpecificationsStereo Power:8 Ohms: 800W/Chnl4 Ohms: 1,350W/Chnl2 Ohms: 2,000W/ChnlBridged Mono Power: 4 Ohms: 4,000WMax RMS Output Voltage: 93 V / ChannelFrequency Response: 10 Hz - 100 kHz (+ 0 dB / - 2dB @ 1 Watt)Power Bandwidth : 10 Hz " 35 kHz; +0, -3 dB at rated 4 Ohm powerGain: selectable between x40 (32 dB) and x20 (26 dB)Input Sensitivity (x40): 1.88 V +/- 3% for 1kHz, 4 Ohm Rated PowerInput Impedance: 15k Ohm BalancedClass: switched rail, HInput Connectors: balanced female XLROutput Connectors: Speakon® connectors and five-way binding postPower Supply: Linear Torroidal TransfomerCurrent Draw @ 120 VAC:1/8 Power Draw:720 Watts / 6A @ 8 Ohms1185 Watts / 9.86A @ 4 Ohms1825 Watts / 15.21A @ 2 Ohms1/3 Power Draw:1835 Watts / 15.3A @ 8 Ohms2975 Watts / 24.8A @ 4 Ohms4535 Watts / 37.8A @ 2 OhmsThermal Emissions: 4,545 BTU/hr (1/3 power, 4 Ohm )Cooling: Back to Front via 1variable speed DC fanControls: 2 front panel attenuators, rear panel Gain and Mode switchesDimensions: 3.5" H x 19" W x 14.875" D