User manual CREST AUDIO VS900 BROCHURE

[. . . ] In every respect, the Vs900 embodies the Crest Audio tradition of roadworthy ruggedness and reliability. For example, the Vs900 includes the same TourClass® protection features as found in Crest's CA, CKS, CKV and CKX Series amplifiers. That means the Vs900 will endure virtually any type of mishap or system stress­from uncontrolled `upstream' oscillation to extreme ambient heat or accidental shorting­without damage to internal circuitry or connected speakers. Equally suited to permanent installation or mobile applications, the Vs900 offers a welcome balance of exceptional audio performance and overall value. [. . . ] 5 years* Architect's & Engineer's Specifications The power amplifier shall have two channels. Each channel shall deliver a minimum of 250 watts at 8 ohms, 450 watts at 4 ohms and 550 watts at 2 ohms, 1kHz, 1% THD+N. In bridged mono mode, it shall deliver 900 watts at 8 ohms and 1100 watts into 4 ohms, 1kHz, 1% THD+N The amplifier shall be front-to-side cooled, with a two-speed AC 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 active clip limiting. The amplifier shall have a voltage gain of X40 with an input sensitivity of 1. 0V for rated power at 8 ohms. THD+N shall be less than 1. 0% at 4, 1kHz. The hum and noise level shall be 105 dB below rated output, "A" weighted. SMPTE IMD shall be less than 0. 1%, rated power at 8, 60Hz and 7kHz. The amplifier shall have a class AB output stage. The frequency response shall be greater than 10Hz-20kHz +0/-0. 3dB, 1W/8. The amplifier shall operate at 100V-240V, 50-60 Hz AC (configured at factory). Maximum current draw shall not exceed 15 amperes at 120VAC, (circuit breaker limited), with both channels driven continuously into a 4 ohm resistor. A combination power switch/magnetic circuit breaker shall be mounted on the front panel. Front panel indicators shall include an "Active" LED, a "Protect" LED, "Signal" LED and a "Clip" LED (one per channel). Gain attenuators shall be rear panel mounted. A rear panel Bridge/Stereo mode select switch shall be provided. Rear panel input connectors shall be an actively balanced TRS (tip +), and barrier strip for each channel. Output connectors shall be Speakon or 5-way binding posts (market dependent). A rear-panel IEC AC mains socket or single AC mains cord having an appropriate AC plug for the intended operating voltage shall be provided (market dependent). [. . . ] * 3-Year Warranty with 2 additional years is Registration Card is sent to Crest Audio. (USA, UK, Canada, and many other countries). Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification. Crest Audio specification literature is available in downloadable PDF format; visit our website at: http://www. crestaudio. com. [. . . ]