Audio International PA-7500A Installation Manual - page 5
Audio International, Inc. PA-7500A Installation
Document # 540056A, Rev. A, 7/2000
Page 4 of 11
1.4
Optional Equipment
Audio International, Inc. offers a complete line of speaker systems to
enhance any aircraft entertainment system. Contact your AI
representative for details.
2.0 Application
2.1 Introduction
The PA-7500A will produce stereo audio output for the entertainment
system and monaural audio for page / chime. Each amplifier is designed
to interface with AI’s proprietary RS-485 serial data bus allowing all
entertainment switch panels to communicate with the audio amplifier.
The unit has the capability of producing four (4) channels, 75 watts RMS
peak output. Output impedance 4-ohms per channel; input impedance
10-k briefer, 1 VRMS nominal. Emergency input power is provided for PA
override capabilities. Electric crossover low range 20 – 135 Hz, high
range 135Hz – 20 kHz.
2.2 Block
Diagram
– Typical Application