PS Engineering
PMA450B Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0600
Page 3-12
Rev. 5, August 2020
The PMA450B always defaults to
Mute ALL
when turned on, unless “Mute Recall” is selected in setup menu.
In ALL- music
will
mute with
either
intercom
or
radio
Mute OFF, or “Karaoke” mode - music will not mute except during radio transmissions.
Radio -
Radio
will mute music, but intercom will
not
mute music.
In addition to the panel mute menu, a remote switch may be installed to allow the passengers local access
to their Karaoke mode. When this switch is grounded, the menu choice is overridden.
3.10.2 Music Volume
The volume of the music inputs can also be adjusted from the menu of the PMA450B:
Press Music → Music Volume → Desired music input. The LED Volume bar and the numeric volume will
show the volume level.
Figure 3-7 – Music Volume screen
3.10.3 Music in Pilot ISO mode
When the isolate (ISO) mode is activated, the music for the pilot is automatically disabled. If desired, the
pilot can elect to hear music in the ISO mode with a long press or holding the home menu button or the ICS
button, while in the ISO mode.
The pilot can select any music source from the Music distribution menu.
Bluetooth® connection
The PMA450B has a Bluetooth interface. The audio panel is always “discoverable,” so you just need to
search for the PMA450B from your Bluetooth-equipped phone or music source. The default access code is
0000, if needed. Once the PMA450B has been “paired” with your Bluetooth device, the TEL distribution
will act as described in §
