User manual CREST AUDIO PRO SERIES 4801 SPECIFICATIONS
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Manual abstract: user guide CREST AUDIO PRO SERIES 4801SPECIFICATIONS
Detailed instructions for use are in the User's Guide.
[. . . ] The 4801 is fully compatible in design with other Crest Audio Professional Series amplifiers, Octal Socket Accessories, and the NexSys® computer-controlled audio system.
4801 Features
· · · · · · · · · · NexSys-ready Toroidal power transformer Tunnel cooling Variable speed DC fan High thermal mass heat sinks Balanced XLR inputs 5-way output binding post connectors Stereo/Parallel/Bridged Mono mode selector switch Rear panel ground lift jumper Extensive protection circuitry: - Clip Limiting prevents speaker damage with gentle gain reduction at clip threshold. - IGM (Instantaneous Gain Modulation) monitors connected loads to detect conditions that may overstress output devices, allowing safe operation into nominal 2 impedances. - AutoRamp gradually increases gain to attenuator setting level when amplifier is turned on. [. . . ] front panel 3. 5"x19"x15" (16" to rear ears) 89mm x 483mm x 381mm (406mm to rear ears) 54. 0 lbs (24. 52 kg. ), 49. 0 lbs (22. 25 kg. ) 5 years, parts and labor
USA, Canada, U. K. , and many other countries. Power figures are watts per channel, both channels driven. Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications. Crest Audio specification literature is available in downloadable PDF file format; visit our website at http://www. crestaudio. com. 5/21/97
The power amplifier shall have two channels. Each channel shall deliver a minimum of 300 watts at 8 ohms, 480 watts at 4 ohms and 600 watts at 2 ohms, 20Hz-20kHz, <0. 05% THD+N. In bridged mono mode, it shall deliver 960 watts at 8 ohms and 1200 watts into 4 ohms, 20Hz20kHz, <0. 05% THD+N. The amplifier shall be rear-to-front tunnel-cooled, with a variable-speed DC fan. The amplifier shall have circuitry to protect itself and the speaker load from output short circuits, DC voltage on outputs, and thermal overload. The amplifier shall include circuitry to gradually increase gain to attenuator setting levels when the amplifier is turned on, and circuitry for impedance sensing and clip limiting. The amplifier shall have a voltage gain of X40 with an input sensitivity of 1. 1V for rated power at 4 ohms. The hum and noise level shall be greater than 100 dB below rated output, "A" weighted. SMPTE IMD shall be less than 0. 1 % at rated power, 60Hz and 7kHz. The amplifier shall have a class H output stage with a modulated power supply. The frequency response shall be greater than 20Hz-20kHz, +0/-0. 3dB (1W/8). The amplifier shall operate at 100-240V, 50-60 Hz AC (configured at factory). [. . . ] The amplifier shall be designated the Crest Audio Model 4801.
Rear View
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
AVIS : RISQUE DE CHOC ÉLECTRIQUE--NE PAS OUVRIR
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á L'HUMIDITÉ
STEREO PARALLEL BRIDGE
OUT A
A
+
BRIDGE
--
IN
A
PUSH
OUT B SIGNAL GROUND LIFT
IN
B
PUSH
B
MODEL #
USA ONLY MAXIMUM OUTPUT POWER INPUT CURRENT IN WATTS PER @ 120V, 60Hz CHANNEL, 2 4801 18 AMPS 600W 6001 21 AMPS 720W OUTPUT - CLASS 2 WIRING MAY BE USED
Designed & manufactured in the USA by:
PIN 3+
Crest Audio Inc. Paramus, New Jersey 07652 USA
Crest Audio Inc. [. . . ]
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