User Adjustments; Unswitched Audio Level; Adjustments - PS Engineering PAC45A Installation And Operation Instructions Manual

2.6.1 Music Input
Use the low-level output of any additional Music device to conn ect to the audio
controller. Maxi mum signal level is 3 VAC p-p. DO NOT use a speaker -level
output, this will cause internal damage in the audio controller.
Local oscillators and internal signals from Music equipment can cause undesired interference
with other aircraft systems. Before takeoff, operate the entertainment devices to determine if there
is any adverse effect within the aircraft systems. If any unusual operation is noted in flight, imme-
diately switch off the entertainment devices.
All additional entertainment devices must be switched off for both takeoff and landing.

2.7 User Adjustments

The PAC45A is factory set for typical installation. However, several installation adjustments are avail-
able. No computer is required.
2.7.1

Unswitched Audio Level

Unswitched inputs one through five are installation adjustable through the side of the PAC45A unit.
2.7.2

Adjustments

On the side of the PAC45A/HUB45R are 15 adjustment potentiometers.
1. Unswitched input 5 volume
2. Unswitched input 4 volume
3. Unswitched input 3 volume
4. Unswitched input 2 volume
5. Unswitched input 1 volume
6. Speaker Amplifier Volume
7. PA Amplifier Volume
200-045-1000
NOTE
CAUTION
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Volume
Rev. 2, March 2019