Pa Volume Adjustment; Figure 23 Amplifier Card Adjustments For Pa Adjustments - Simplex 4100 Installation Manual
Emergency warning and intercommunication system (ewis)
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Page 68
6.2 PA VOLUME ADJUSTMENT
Figure 23 Amplifier Card Adjustments for PA Adjustments
Document No.: 4100-M011
INSTALLATION MANUAL
PA volume can be adjusted, using the
variable resistor located on the Amplifier
card.
To adjust the Speaker volume:-
(a)
Locate TR2 PA Volume variable
resister on the Amplifier board
8225 or 8250. (See Figure 23)
(b)
Use
a
variable resistor to required output
level.
• Turn
clockwise to increase volume.
• Turn the variable resistor anti-
clockwise to decrease volume.
March 1998
SIMPLEX 4100 EWIS
screwdriver
to
adjust
the
variable
resistor
Issue 1.0
- Quick Links:
- Card Installation
- Speaker Line Terminations
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