User manual CREST AUDIO PRO II SERIES 4802 SPECIFICATIONS

[. . . ] 4802 power amplifier description The Pro II Series heralds a major advance in amplifier design from Crest Audio. [. . . ] PowerLok is Crest Audio's unique implementation of Power Factor Correction, which allows current to be drawn throughout the entire cycle of the AC line-frequency, providing maximum output power, while drawing significantly smaller peak currents from the AC line. Compared with an amplifier using a conventional power-supply, PowerLok requires less peak power to produce identical output power results--and because PowerLok's current peaks are smaller, a Pro II amplifier can be serviced by a lower-rated breaker than a conventional amplifier of similar wattage. features . . . . . . . . . . . . PowerLok technology dramatically reduced net weight latest generation of high-speed, wide-bandwidth output devices twin-tunnel cooling with back-to-front air flow dual, rear-mounted, continuously-variable-speed fans balanced male and female xlr inputs with switch-configurable xlr polarity and sensitivity selection Speakon and five-way binding post output connectors stereo, parallel, bridged-mono: mode selector switch ground-lift switch front panel power switch, rear panel circuit-breaker recessed, stepped attenuators modular construction aluminum chassis five-year warranty superior sound quality excellent low frequency and transient response louder than conventional amplifiers --maximum output level never dips constant, predictable performance consistent power output accepts any line voltage worldwide--50 or 60Hz accepts long power cable runs with no loss of output power draws significantly less peak current lighter-duty power distribution components low line-voltage distortion minimal supply-ripple cost-effective extreme reliability reduced shipping costs--half the weight of conventional amplifiers TourClass® protection circuits acl active clip limiting prevents speaker damage by providing gentle gain reduction at the clipping threshold. igm instantaneous gain modulation monitors speaker loads to detect conditions that may overstress output devices, allowing safe operation into nominal 2 speaker loads. autoramp gradually increases gain to the attenuator levelsettings when the amplifier is turned on. Other protection features include: short circuit, dc voltage, comprehensive thermal management, current in-rush turnon/off transient, and sub/ultrasonic input. preliminary power specifications 8 stereo 370w 350w 4 stereo 600w 570w 2 stereo 800w 760w 8 bridged 1200w 1140w 4 bridged 1600w 1520w 4802 1kHz, 0. 01% THD+N 20Hz-20kHz, 0. 1% THD+N Power figures are watts per channel, both channels driven. specifications stereo power 8 4 2 bridged mono power 8 4 maximum output voltage frequency response 1W @ 8 power bandwidth rated power @ 4, 1% THD+N THD+N SMPTE IMD 4802 power amplifier 20Hz­20kHz, 0. 1% THD+N 350W 570W 760W 1140W 1520W Architech's specifications for this model and other product information is available in downloadable PDF format at www. crestaudio. com Power figures are watts per channel, both channels driven. © 1kHz, 0. 01% THD+N 370W 600W 800W 1200W 1600W 56V rms, 79V peak each channel ¹ crest audio inc. 20Hz­20kHz, +0 / -0. 3dB, -3dB@135kHz 20Hz­20kHz, +0 / -0. 23dB <0. 05% rated power @ 4, 1kHz <0. 01% rated power @ 8, 60Hz and 7kHz 400:1 10­400Hz @ 8 >60dB @ 1kHz . 775V constant sensitivity, x20 or x40 constant gain >20k balanced, >10k unbalanced -110dB, A-weighted below rated power Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification. damping factor input CMRR switch-configurable input options input impedance hum and noise crosstalk class Power supply Circuit breaker rating Current draw 1/8 power, 4 1/3 power, 4 > -80dB @ 1kHz below rated power H two versions: 90­255 or 180­255 vac @ 50­60Hz factory configured PowerLok power supply with active power factor correction at idle Peak current draw thermal emissions 1/8 Power, 4 1/3 Power, 4 25A @ 120V <3. 1A @120V <8. 3A @120V <1. 5A @120V TBD 756 BTU/Hr 2000 BTU/Hr back-to-front via two rear-mounted variable-speed DC fans female and male xlr pin 2+ switch-configurable for pin 3+ Speakon connectors and five-way output binding posts front panel: two attenuators, power switch incorporating magnetic circuit breaker rear panel: signal ground-lift, mode select, input sensitivity, pin 2/3+ switches acl, signal, status bi-color: active / protect acl, igm, autoramp, short circuit, dc voltage, turn-on/-off transient, current in-rush, sub/ultrasonic input aluminum chassis 3. 5" x 19" x 18" gross: 30. 0lbs 13. 6kg net: 25. 0lbs 11. 3kg five years double thickness in rack-ear areas 133 x 483 x 457mm height x width x depth cooling input connectors output connectors controls LED indicators TourClass® protection construction dimensions weight warranty USA, Canada, United Kingdom, and many other countries rear view 4802 v. [. . . ] 100 Eisenhower Dr. , Paramus NJ 07652 USA TEL: 201. 909. 8700 FAX: 201. 909. 8744 http://www. crestaudio. com [. . . ]