Operation
This audio input allows background music from an external source to connect to the PA-15. While any other input
is active, background music is turned off, so music will only be heard through the speakers when all other inputs
are idle. A 3.5mm (1/8”) audio cable is provided, trim the connector off of one end and connect the wires to screw
terminals 13 & 14, and the other end to a line level music source. The audio level can be set using the
trim POT furthest to the right (R5).
A. Background Music In
5
Very long runs between the PA-15 and the speakers might re-
quire 70V transformers (Parts Express 1-800-338-0531, part
# 300-039 or equivalent).
Note: For additional information on how to minimize loss of
audio in long speaker runs, see DOD# 856.
F. Long Runs Between Amplifier and Speakers
G. DIP Switch Programming and Volume Controls
DIP Switch Position Description
6 ON 600 Ohm page port mode
6 OFF FXS (ring trip), FXO (trunk input)
7 ON Minimum VOX sensitivity
7 OFF Maximum VOX sensitivity
8 ON Pre-announce page tone ON
8 OFF Pre-announce page tone OFF
Switch 1 Switch 2 Sound Output Description
OFF OFF Electronic warble
OFF ON Double gong
ON OFF Quadruple chime
ON ON Door chime
Switch 9 Switch 10 Default Timer Busy Detection
OFF OFF Off On
OFF ON 16 seconds Off
ON OFF 36 seconds On
ON ON 72 seconds On
DIP Switch Position Description
5 ON Loud ring + door chime
5 OFF Loud ring only
Switch 3 Switch 4 Silence Time Out
OFF OFF Off
OFF ON 2.5 seconds
ON OFF 5.0 seconds
ON ON 10 seconds
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