User manual CREST AUDIO CA4 SPECIFICATIONS

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Manual abstract: user guide CREST AUDIO CA4SPECIFICATIONS

Detailed instructions for use are in the User's Guide.

[. . . ] Wide-bandwidth output devices assure detailed, transparent high frequency response. And, thanks to Crest's exclusive IGM circuit, the CA4 will drive 2 loads safely without compromise in performance. CA4 Features · Crest's legendary "overbuilt" power supply · Toroidal power transformer · Latest generation of high-speed, wide-bandwidth output devices · Twin tunnel cooling with back-to-front air flow · Dual, variable speed DC fans · Massive, extruded aluminum heat sinks · Balanced XLR and 1/4-inch (TRS) inputs · 5-Way binding post outputs or SpeakonTM connectors (market dependent) · Stereo/parallel/bridged mono mode selector switch · Ground lift switch · TourClass® protection circuits: - ACL (Active Clip Limiting) prevents speaker damage with gentle gain reduction at clip threshold. - IGM (Instantaneous Gain Modulation) monitors speaker loads to detect conditions that may overstress output devices, allowing safe operation into nominal 2 impedances. [. . . ] In bridged mono mode with an 8 ohm load, 20Hz - 20kHz, 0. 1% THD+N, it shall deliver a minimum of 800 watts. Two rear panel mounted variable speed DC fans (filters detachable without tools) shall provide back to front air flow through the chassis. The amplifier shall have circuitry to protect itself from output short circuits, thermal overload or other adverse load conditions. The amplifier shall protect speaker loads from DC voltage on outputs. The amplifier shall have active clip limiting and impedance sensing circuitry. Output relays shall protect the speakers from amplifier failure. Each channel shall have a standard (factory-set) input sensitivity of 0. 775 Volts, and shall be fitted with an internal jumper which allows the gain to be altered to X20 or X40. The hum and noise level shall be 105 dB below rated output, "A" weighted. SMPTE IMD shall be less than 0. 01% at rated power, 60Hz and 7kHz. The amplifier shall have a class AB output stage. The frequency response shall be 20Hz-20kHz, +0, -0. 3dB (1W/8). The amplifier will operate at 100V-240V, 50-60 Hz AC (configured at factory). Maximum current draw shall not exceed 15 amperes at 120VAC (limited by front panel breaker for bench tests). Front panel indicators shall include Active, Protect, Signal, and Clip LED's for each channel. Front panel attenuators shall be recessed and detented. Rear panel input connectors shall be female TRS and XLR type, internally dealer-configurable for pin 2 (factory setting) or pin 3 positive. Output terminations shall be 5-way output binding posts or Speakon output connectors (market dependent). A ground lift switch and a Stereo/Parallel/Bridged Mono mode operation switch shall be provided. [. . . ] ©1997 Crest Audio Inc. Rear View, Binding Post Version 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 A A Designed & manufactured in the USA by: + + A AB A A ·· Crest Audio Inc. Paramus, New Jersey 07652 USA B 1 3- 2+ 643-105 A Designed & manufactured in the USA by: Crest Audio Inc. [. . . ]

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