10-channel Audio Mixer -Mono (AMX-2A)

"Mini Audio Panel"

The AMX-2A device is a 10-channel audio mixer and headphone amplifier for aircraft applications. It functions as a mini audio panel for combining various communications, navigation, alarm, warning and other audio sources, amplifies them and provides a seamless interface into common intercom systems—all in a small package that takes no valuable panel space.  System wiring is greatly simplified and the unit occupies a very small footprint, with all of the circuitry contained in a standard 25-pin D-subminiature connector shell.  A large number of signal ground pins are provided to simplify the connections of cable shields.  All of the audio connections are made to the 25-pin connector built into the unit. Four of the ten audio inputs have volume controls that are screwdriver adjustable, while the other six are fixed level for connection to instruments that have their own volume adjustment capability. The output is designed to drive headphone busses directly and has a unique capability of combining the audio from a primary comm transceiver onto the output in a fail-safe fashion.  It is compatible with all intercom systems, including those that do not provide an auxiliary input.