Simplex 4100 - 6 Output Level Adjustments; Speaker Volume Adjustment; Figure 22 Amplifier Card Adjustments for Speaker Adjustments

SIMPLEX 4100 EWIS Page 67
INSTALLATION MANUAL
Document No.: 4100-M011 March 1998 Issue 1.0
6. OUTPUT LEVEL ADJUSTMENTS
6.1 SPEAKER VOLUME ADJUSTMENT
Speaker volume can be adjusted, using
the variable resistors located on the
Amplifier card.
To adjust the Speaker volume:-
(a) Locate TR1 Master Volume
variable resister on the Amplifier
board 8225 or 8250. (See Figure
22
(b) Use a screwdriver to adjust
variable resistor to required output
level.
• Turn the variable resistor
clockwise to increase volume.
• Turn the variable resistor anti-
clockwise to decrease volume.
Figure 22 Amplifier Card Adjustments for Speaker Adjustments
TR1
Master
Volume
TR2
PA
Volume