Altec Lansing Industrial Professional Sound Products Spec site

ALTEC LANSING INDUSTRIAL PROFESSIONAL SOUND PRODUCTS POWERED MIXER LIST

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1707C & 1715C Six Channel Mainframe Mixer/Power Amplifier

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The mixer also contains two auxiliary input channels for high-impedance line or tape sources. These channels have independent monitor sends, pan pots, and slide faders.

1707C/1715C System Block Diagram
ARCHITECT'S and ENGINEER'S SPECIFICATION

The mixer/power amplifiershall have six configurable ports and be capable of operating from 100, 120, 200, 220, or 240 Vac, 50/60 Hz line, or from ±48 VDC. Each port shall be usable with a microphone or other high level device. The mixer/power amplifier mainframe shall include a compressor/limiter, low and high frequency shelving equalizers, and a tone generator capable of producing general purpose and emergency warning signals.

The power amplifier shall meet the following performance criteria: Power Output: 75 watts (1707C) at less than 0.05% THD from 20 Hz to 20 kHz (8 fl direct output), or 150 watts (1715C) at less than 0.05% THD from 20 Hz to 20 kHz (4 fl direct output). Frequency Response: 20 Hz to 20 kHz, ± 1 dB (direct output). Source Impedance: 150 fl to 250 fl nominal with a microphone preamplifier, 600 fl with a bridging transformer, 150 fl to 600 fl with a line matching transformer, and greater than 30 kSZ with a tape preamplifier. Equivalent Input Noise: <-120 dBr with

a low impedance microphone preamplifier. Output Noise: <-85 dBm (with all controls off).

The mixer/power amplifier shall be rack mountable and finished in black. The amplifier's dimensions shall be 5'/4" (H) x 19" (W) x 121/4" (D) and its net weight shall be 24.2 lbs. (1707C), or 30.8 lbs. (1715C).

The plug-in accessory modules shall be the 1780A/AT and the 1781A/AT Input modules and the 1783 Line Output module. The accessory transformers usable with the modules shall be the 1785A Input Isolation transformer and the 1786 Output Isolation transformer. The connector subassemblies shall be the 1791 female XLR, 1792 male XLR, 1793 dual phono, and the 1794 5-lug screw terminal connector.

The mixer/power amplifier shall be the Altec Lansing Model 1707C/1715C.



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