Crown ComTech DriveCore CT475
With a name synonymous with powerful, reliable performance, the ComTech DriveCore™ family of amplifiers firmly establishes new standards in innovation. Performance is exemplary in every respect with Signal-to-Noise of better than 110dB and Total Harmonic Distortion below 0.05% across the full audio bandwidth, delivering studio-grade sound in one rack-space with up to 8 channels of 125W. ComTech DriveCore™ is ideal for installations that require premium sound quality, multi-channel configurations, compact dimensions, and quite often zero ambient fan noise. Typical applications include boardrooms, video and teleconferencing, VIP suites in stadiums and arenas, and upscale restaurants and retail outlets to name just a few. Representing next generation technology available today, the ComTech DriveCore™ proves without a doubt that big things really do come in small packages.
Powering this remarkable amplifier is the pioneering technology of DriveCore™, which seamlessly integrates the amplifier drive stage into the power output stage fusing everything into a chip the size of a dime. The foundational DriveCore™ circuitry is based on breakthroughs by Crown's own Gerald Stanley with five patents applying to the advanced feedback, modulation and output stage technologies. DriveCore's front-end drive circuits leverage the inherent efficiency of Class D output stages while also maintaining superb sonic characteristics. The end result is an ultra-efficient one-piece audio amplifier circuit that exhibits the exemplary audio quality of a highly evolved Class AB design.
Energy efficiency is an integral part of ComTech DriveCore&trade. This series debuts a new four-stage universal power supply that adapts to operating demands to assure peak efficiency. Normal, Green, Sleep, and Deep Sleep modes combine to provide everything from full voltage to the supply rails for instant response to limiting power consumption, to less than 1W when not in use. And, because it's over 90% efficient in the DriveCore™ stage, no fan is required, allowing for ultra-quiet operation.
|Rated Power Output (all channels driven)||75W per CH @ 4 ohms, 75W per CH @ 8 ohms|
|Signal to Noise Ratio (below rated power 20 Hz to 20 kHz, A-Weighted)||110 dB|
|THD (full rated power, 20 Hz - 20 kHz)||< 0.05%|
(from 0 dB down to -30 dB)
|Frequency Response (at 1W, 4/8 ohms)||+/- 0.5 dB|
|Crosstalk (below rated power) 20 Hz to 1 kHz||> 70 dB|
|Common Mode Rejection (20 Hz to 1 kHz)||> 55 dB, typically > 70 dB|
|Voltage Gain||25 dB|
|DC Offset||+/- 20mV|
|Idle Power Consumption (Standard Mode)||15.0W|
|Dimensions||1.75" x 19" x 15.19"|
|Shipping Weight||15 lbs/6.8 kg|
|IEC Power Connector||15A|
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