
PS Engineering
PAC45J Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-045-2000
Page 1-1
November 2020
Section I – GENERAL INFORMATION
1.1
INTRODUCTION
The PAC45J represents a revolutionary step in cockpit audio control and intercommunications utility.
MultiTalker®, using licensed U.S. Air Force patented technology, provides True Dimensional Sound, help-
ing pilots to more easily discern from simultaneous radio receptions.
1.1.1
Limitations
This article meets the minimum performance and quality control standards required by a technical standard
order (TSO). Installation of this article requires separate approval. Refer to Advisory Circular 20-41A for
information on TSO installation approval.
Operation is subject to the following conditions:
•
This device may not cause harmful interference.
•
This device must accept any interference received, including interference that may cause undesired
operation.
1.2
SCOPE
This manual provides installation and operation instructions for the PS Engineering PAC45J-series of Audio
Selector Panel/Intercom Systems. This includes the following units:
Model Number
Description
PS Engineering
Part Number
HUB45AR
Remote-mounted Audio Hub for analog I/O and processing
050-045-1001
CTL45J
Panel Mounted Control Head for Flight Crew Black
050-445-XXXX
CTL45J-NVG
Panel Mounted Control Head for Flight Crew, Night Vision
Compatible Black
050-446-XXXX
CTL45J
Panel Mounted Control Head for Flight Crew Gray
050-447-XXXX
CTL45J-NVG
Panel Mounted Control Head for Flight Crew Night Vision
Compatible -Gray
050-448-XXXX
1.3
EQUIPMENT DESCRIPTION
The PAC45J is a state-of-the-art audio isolation amplifier and audio selector that contains an automatic voice
activated (VOX) intercom system. It can switch up to eight transceivers (COM 1 to 8) and eight navigation
receivers (AUX 1 to 8) that can be configured as desired.
There are up to five unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar
altimeter warning.
In addition to a radio master volume, the individual volume controls select the receiver audio source provided
to the headphones when selected to the “out” position.
A nine-station voice activated (VOX) intercom is included in the PAC45J. This system has PS Engineering’s
patented
IntelliVox®
circuitry that eliminates manual adjustments. The intercom system incorporates pilot
isolate, all and crew modes, a stereo music input with "SoftMute™".
In the PAC45J, a Bluetooth® wireless interface is available for wireless telephone and music connection.
Up to nine programmable alerts can be triggered by external sources to provide additional capability.