User Guide

5
fixed AC power 10 - 18 vAC you MUST
NOT EXCEED 18 volts AC. DC voltage
created from AC is 1.414 X vAC, 18vAC
= 25 vDC !
A HUM in the audio output is because
the DC power is not filtered enough. Add
a large electrolytic capacitor (470 mfd @
25 vDC or larger) across the DC output
as shown (when power is off). Make
sure you observe the polarity markings
of the capacitor !
ON / OFF
switch
+
–
speaker
Gray
S1
S2
S3
S4
Right Rail
Left Rail
either rail may be used. Right / Left
only used for reference.
Gray
Red
Red
Gray
Switch key:
S1 - Horn (momentary)
S2 - Bell
S3 - Force Notch 8
S4 - Main sounds off
Red
Gray
#524 SPDT switch.
Switch shown in the OFF position.
Drawn as a spst.
Red
+
extra filter
capacitor -
observe
polarity !
#524 SPDT switch.
Switch shown in the OFF
position. Drawn as a spst.
fixed DC power - must not exceed 24
volts DC. If you have a HUM or
other static noise in the audio output
it is because this power is not
filtered enough. Add a large
electrolytic capacitor (470 mfd @ 25
vDC or larger) across this DC
supplies output (when power is off).
Make sure you observe the polarity
markings of the capacitor !
+
–
speaker
Gray
Red Red
Gray
#524 SPDT switch.
Switch shown in the OFF position.
Drawn as a spst.
#618 SPST momentary
push button switch.
Switch shown in the OFF position.
S1
S2
S3
S4
Right Rail
Left Rail
either rail may be used. Right / Left
only used for reference.
ON / OFF
switch
+
–
Red
Gray
Switch key:
S1 - Horn (momentary)
S2 - Bell
S3 - Force Notch 8
S4 - Main sounds off
Black
White
Black
White
Stationary DC power installation using track power for notch setting.
You can also add an auxillary Amplifier, see pages 8, 9, and 10.
Stationary AC power installation using track power for notch setting.
You can also add an auxillary Amplifier, see pages 8, 9, and 10.