Whelen WPA112 - Manual (Page 4)

Page 4
Hands-Free Siren Activation...
The WPA™ Series Waterproof Amplifier, when installed
according to the wiring diagram above, offers the ability to
activate siren tones using the vehicle’s steering wheel horn ring.
After the horn transfer switch has been set to siren operation,
the hands-free mode is enabled when the customer installed
control switch, connected via the WHT/ORG wire, is closed.
When the hands-free mode is enabled, pressing the horn ring
button will start the Wail siren tone. A second press of the horn
ring button will change the siren tone from Wail to Yelp. A third
press will change the siren tone from Yelp to Piercer™. The
siren tones will continue to cycle from Wail to Yelp to Piercer
with each subsequent press of the horn ring button. Two, rapid
presses on the horn ring button ends hands-free siren tone
generation until the horn ring button is pressed again. At that
time the cycle is repeated.
To exit the hands-free mode, end current siren tone, turn off the
customer installed switch for the hands-free mode and return
the horn transfer switch to its normal operating position. Normal
vehicle horn operation is then restored.
Manual Siren Activation (Manual Mode)...
The WPA Siren Amplifier, when installed according to the wiring
diagram (Figure 1), offers manual siren activation using the
vehicle’s steering wheel horn ring as a momentary switch. After
the horn transfer switch has been set to siren operation, the
horn ring button will now activate the manual siren tone. The
manual siren tone “ramps up” to a predetermined level and
continues at that level until the manual switch is released. When
the switch is released, the tone is immediately terminated.
WPA TM SIREN SPECIFICATIONS
SPEC:
WPA112 TM WPA124 TM WPA512 TM WPA524 TM
INPUT VOLTAGE 13.5 VDC ± 20% 26.5 VDC ± 20% 13.5 VDC ± 20% 26.5 VDC ± 20%
INPUT CURRENT (OFF) 0 mA 0 mA 0 mA 0 mA
INPUT CURRENT (STANDBY) 10 mA (TYP.) 5 mA (TYP.) 10 mA (TYP.) 5 mA (TYP.)
INPUT CURRENT (SIREN) 8 Amps (TYP.) 4 Amps (TYP.) 5 Amps (TYP.) 3 Amps (TYP.)
OUTPUT VOLTAGE 34 V RMS (MAX.) 34 V RMS (MAX.) 25 V RMS (MAX.) 25 V RMS (MAX.)
SPEAKER (1) 11 ohm (1) 11 ohm (1) 11 ohm (1) 11 ohm
OUTPUT POWER @ 15 VDC 105 WATTS (MAX.) 105 WATTS (MAX.) 58 WATTS (MAX.) 58 WATTS (MAX.)
CONROL VOLTAGE INPUT VOLTAGE INPUT VOLTAGE INPUT VOLTAGE INPUT VOLTAGE
CONTROL CURRENT 125 mA (TYP.) 125 mA (TYP.) 125 mA (TYP.) 125 mA (TYP.)
HORN RING VOLTAGE INPUT VOLTAGE INPUT VOLTAGE INPUT VOLTAGE INPUT VOLTAGE
OR GROUND OR GROUND OR GROUND OR GROUND
HORN RING CURRENT 15 mA (TYP.) 15 mA (TYP.) 15 mA (TYP.) 15 mA (TYP.)
OPERATING TEMP. -30° C TO +60° C -30° C TO +60° C -30° C TO +60° C -30° C TO +60° C
OPERATING HUMIDITY 95% NON-CONDENSING 95% NON-CONDENSING 95% NON-CONDENSING 95% NON-CONDENSING
To Adjust the Radio Repeat Levels...
Before using the WPA Series Waterproof Amplifier, the Radio
Repeat output volume must be adjusted to satisfactory
operating levels. To adjust this level, a small, flat-blade
screwdriver is needed.
Radio Repeat Volume
Locate the Radio Repeat adjustment port (potentiometer) to the
left of the 12-position input port on the remote amplifier. The
potentiometer is hidden behind a 10-32 Phillips head machine
screw. Once this screw is removed, set the volume level of the
vehicle’s two-way radio to its normal operating volume. Place
the amplifier in Radio Repeat mode. Insert the screwdriver in
the Radio Repeat adjustment port and turn in a clockwise
direction to increase the sound to its maximum desired volume.
Return the Phillips head screw to its original position (see Fig. 2
below).
POTENTIOMETER (HIDDEN BEHIND
A 10-32 x 5/16" MACHINE SCREW
REAR VIEW OF THE AMPLIFIER
Fig. 2