User manual CREST AUDIO PRO SERIES 7301 SPECIFICATIONS

[. . . ] For bi-amped systems, the Crest Audio 7301 is unmatched in quality, efficiency and sonic accuracy. When used in combination with a crossover (including those available in the Crest Audio Octal Socket Accessory line), the 7301 becomes a complete bi-amplification system, in a space-efficient package. The 7301 is fully compatible in design with the other Crest Audio Professional Series amplifiers, Octal Socket Accessories, and the NexSys® computer controlled audio system. 7301 Features · Crest Audio's legendary "overbuilt" power supply · Toroidal power transformer · Latest generation of high-speed, wide-bandwidth output devices · Tunnel cooling with back-to-front air flow · Dual, variable speed DC fans · High thermal mass heat sinks · Balanced XLR inputs · 5-way output binding post connectors · Rear panel ground lift jumper · 7301 protection circuitry: - Clip Limiting prevents speaker damage with gentle gain reduction at clip threshold. [. . . ] 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. 53V (low channel) and . 79V (high channel) for rated power at 4 ohms. The hum and noise level shall be greater than 100 dB below rated output, "A" weighted. The frequency response shall be greater than 20Hz-20kHz, +0, -. 3dB (1W/8). The amplifier shall operate at 100-240V, 50-60 Hz AC (configured at factory). Maximum current draw at 120V shall be no greater than 21A, both channels driven continuously into a 4 ohm resistive load. 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. Rear panel input connectors shall be XLR type, one female per channel. Output connectors shall be 5-way binding posts, two pair per channel. A signal/ground lift jumper shall be provided. A rear-panel AC mains cord having an appropriate AC plug for the intended operating voltage shall be provided (market dependent). The packaging of the amplifier shall allow for standard rack mounting without requiring space between similar units. Dimensions shall be 3. 5" (89mm) high x 19" (483mm) wide x 15" (381mm) deep. The amplifier shall be designated the Crest Audio Model 7301. Both Channels @ 4 Lows @ 2, Highs @ 4 Lows @ 4, Highs @ 8 Lows @ 8, Highs @ 16 Max RMS Output Voltage (each channel) Peak Output Voltage (each channel) Frequency Response (+0 / -0. 3dB, 1W/8) Power Bandwidth (rated power at 4, 1% THD+N) Protection Circuitry THD+N (rated power at 4, 1kHz) Damping Factor (10-400Hz at 8) Input CMRR (1kHz) Input Sensitivity (8) Voltage Gain Input Impedance (balanced) Hum and Noise ("A" weighted, full power, 4) Crosstalk ("A" weighted, full power, 4) Class Input Connectors (per channel) Output Connectors (per channel) Filter Storage Power Supply (factory configured) Idle Current Draw (120V) 1/8 Power Curr. Draw (typical music, 120V/4) 1/3 Power Curr. Draw (continuous music, 120V/4) Max Curr. [. . . ] POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á L'HUMIDITÉ OUT LOWS IN LOWS PUSH OUT HIGHS SIGNAL GROUND LIFT Designed & manufactured in the USA by: PIN 3+ IN HIGHS PUSH MODEL # 7301 USA ONLY MAXIMUM INPUT CURRENT @ 120V, 60Hz 21 AMPS HIGHS OUTPUT POWER IN WATTS PER CHANNEL, 2 { CH. B 220W OUTPUT - CLASS 2 WIRING MAY BE USED Crest Audio Inc. Paramus, New Jersey 07652 USA Crest Audio Inc. [. . . ]