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Altec 9444B & 9444B/SA Anniversary Series Power Amplifier

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Altec 9444B Amp page 6

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ARCHITECT'S and ENGINEER'S SPECIFICATION

The dual channel power amplifier shall be of solid state design employing true complementary symmetry output circuitry with grounded collectors and capable of operating from either a 120 Vac or 240 Vac line at either 50 or 60 Hz. The amplifier shall contain sensing circuitry to provide protection against over-temperature, shorted output terminals, and radio frequency interference. The load shall be similarly protected against subsonic signals, startup/shutdown transients, and DC faults.
On the rear panel shall be a two position mode switch for selecting between the dual channel mode or the bridged single channel mode, and individual rotary input level controls. Input connections for each channel shall include a powered octal accessory socket for use with optional plug-in accessory modules, a 3-pin female XLR connector, and a barrier strip connector. Output terminals shall be a barrier strip connector.
Front panel indicators shall include an illuminated power on/off indicator, individually illuminated clipping ("CLIP'~ indicators, and individually illuminated protection circuit activation ("PROTECT") indicators. The only front panel control shall be the power on/off switch.
The power amplifier shall meet the following performance criteria. Maximum input voltage: 7.75 V rms. Input sensitivity for rated output power into a 4 ohm load: 0.784 V rms. Rated output power: not less than 300 watts per channel into 4 ohms from 20 Hz to 20 kHz at less than 0.1 % THD; not less than 200 watts per channel into 8 ohms from 20 Hz to 20 kHz at less than 0.1% THD; not less than 400 watts into 16 ohm bridged load from 20 Hz to 20 kHz at less than 0.1% THD; and not less than 600 watts into 8 ohm bridged load from 20 Hz to 20 kHz at less than 0.1% THD. Voltage gain in dual mode shall be 33 dB or greater. Hum and noise: at least 100 dB (A-wtd) below rated output power. Frequency response: 20 Hz to 20 kHz, +0/-1 dB or better at any power tip to rated output power. Damping factor: greater than than 200 at any frequency up to 1 kHz in dual mode with 8 ohm loads. Intermodulation distortion (SMPTE 4:1): less than 0.05%. Transient intermodulation distortion (DIM 100): less than 0.05%. Crosstalk: less than 75 dB below rated output power. Operating temperature range: tip to 60°C (140°F) ambient. Dimensions: not larger than 5.25 inches in height by 19 inches in width and not deeper than 13 inches behind the mounting surface. The net weight shall not exceed 34 pounds.
Finish color shall be black. The chassis shall be rack mountable without the addition of any accessory mounting brackets. The chassis shall be fabricated of 16 GA steel with a 3/16 inch thick 5052 aluminum alloy front panel.
The dual channel power amplifier shall he the ALTEC LANSING Model 9444B [9444B/SA].


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