Intercom Volume Control - PS Engineering PAC45L Pilot's Manual And Operation Manual

The system is designed to block continuous tones; therefore people hum-
ming or whistling in monotone may be blocked after a few moments.
For consistent performance, any headset microphone must be placed within
¼-inch of your lips, preferably against them. (ref: RTCA/DO-214A,
§1.3.1.1 (a)).
NOTE
It is also a good idea to keep the microphone out of a direct wind path.
Moving your head through a vent air stream may cause the IntelliVox® to
open momentarily. This is normal.
The IntelliVox® is designed to work with normal aircraft cabin noise levels
(70 dB and above). It loves aircraft noise! Therefore, it may not recognize
speech and clip syllables in a quiet cabin, such as in the hangar, or without
the engine running. This is normal.
For optimum microphone performance, PS Engineering recommends instal-
lation of a Microphone Muff Kit from Oregon Aero (1-800-888-6910). This
will not only optimize VOX performance, but will improve the overall clar-
ity of all your communications.

Intercom Volume Control

The intercom volume control knob adjusts the loudness of the intercom for
the intercom stations(s) connected to the audio controller panel. It has no
effect on selected radio levels, or music input levels.
In 2-control panel installation, the pilot panel controls pilot intercom vol-
ume only, copilot panel controls copilot and passenger intercom volume.
Monaural headsets
The pilot and copilot positions work with stereo or mono headsets. Howev-
er, MultiTalker will not be presented correctly unless stereo headsets are
used, and oriented correctly on the head, left and right.
NOTE: For the full effect of MultiTalker® Dimensional Sound, stereo
headsets must be used, and the left/right orientation observed.
All passenger headsets are connected in parallel. Therefore, if a monaural
headset is plugged in to a PAC45L Stereo installation, one channel will be
shorted. Although no damage to the unit will occur, all passengers with
stereo headsets will not hear one channel, unless
they switch to the "MONO" mode on their headset.
NOTE: Mono headsets that short the tip and ring
(i.e. older models) will introduce some audio dis-
tortion when used. Modern, stereo headsets are
recommended in all positions.
Page 6 202-045-3000 April 2021 PAC45L Pilot Guide