User manual CREST AUDIO PRO SERIES 3301 SPECIFICATIONS

[. . . ] The output section operates purely in Class AB, with no dynamic switching of supply rail voltages. The result is the cleanest, most transparent mid-and high-frequency audio power imaginable from amplifiers that never compromise quality. A forced-air configuration is used to cool channel heat sinks mounted in a back-to-back tunnel arrangement. [. . . ] <0. 025% <0. 1% 400:1 >60 dB 0. 908V RMS X40 >20k > -100 dB > -60dB AB Female XLR (pin 3+), Octal Socket 5-way output binding posts 29, 200 µF 100V-240V, 50-60Hz 1. 0A 6. 25A 9. 0A 11. 0A 2235 BTU/hr 2821 BTU/hr Rear to front tunnel heatsink, variable speed DC fan Front panel: 2 attenuators, circuit breaker/power switch; Rear panel: mode switch, signal ground lift jumper. Clip/Limit, Signal, Temp/DC, Active 16 ga. single piece steel chassis, . 187" (5mm) alum. front panel 3. 5"x19"x15" (16" to rear ears) 89mm x 483mm x 381mm (406mm to rear ears) 47. 0 lbs (21. 34 kg. ), 42. 0 lbs (19. 07 kg. ) 5 years, parts and labor Architect's & Engineer's Specifications The power amplifier shall have two channels. Each channel shall deliver a minimum of 220 watts at 8 ohms, 330 watts at 4 ohms and 400 watts at 2 ohms, 20Hz - 20kHz, <0. 1% THD+N. In bridged mode, it shall deliver 660 watts at 8 ohms and 800 watts into 4 ohms, 20Hz - 20kHz, <0. 1% THD+N. The amplifier shall be rear-to-front tunnel-cooled, with a variable-speed DC fan. It shall have circuitry to protect itself and the speaker load from output short circuits, DC voltage on outputs, and thermal overload. It shall have RMS clip limiting and impedance sensing circuitry. Output relays shall protect the speakers from any type of amplifier failure. The amplifier shall have a voltage gain of X40 with an input sensitivity of 0. 908V for rated power at 4 ohms. The hum and noise level shall be at least 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 AB output stage with a modulated power supply. The frequency response shall be greater than 20Hz20kHz, + 0, -0. 3dB (1W/8). . The amplifier shall operate at either 100, 120, 220, or 240 volts, 50-60 Hz AC (configured at factory). Maximum current draw shall not exceed 11 amperes at 120VAC or 6 amperes at 240VAC (limited by front panel breaker for bench tests), with both channels driving continuously into a 4 ohm resistor. The amplifier front panel shall include Active, Temp/DC, Signal Present and Clip/Limit LED indicators for each channel, a combination power switch/magnetic circuit breaker and recessed and detented gain pots. [. . . ] 5/21/97 Rear View CAUTION STEREO PARALLEL BRIDGE RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS : RISQUE DE CHOC ÉLECTRIQUE--NE PAS OUVRIR OUT A A PIN 3+ IN 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 + BRIDGE -- A PUSH OUT B SIGNAL GROUND LIFT Designed & manufactured in the USA by: IN B PUSH USA ONLY B MODEL # 3301 MAXIMUM INPUT CURRENT @ 120V, 60Hz 11 AMPS OUTPUT POWER IN WATTS PER CHANNEL, 4 330W OUTPUT - CLASS 2 WIRING MAY BE USED Crest Audio Inc. Paramus, New Jersey 07652 USA Crest Audio Inc. [. . . ]