Whelen BETA124R - Manual (Page 3)

Page 3
BATTERY
CHASSIS
GROUND
BETA SIREN AMPLIFIER
BRN
ORG
-
100 WATT
SPEAKER
+
VEHICLE
HORN
CUSTOMER SUPPLIED
SPST SWITCHES
10 AMP FUSE (12V installation)
7.5 AMP FUSE (24V installation)
(CUSTOMER SUPPLIED)
HORN TRANSFER SWITCH
(CUSTOMER SUPPLIED)
SPDT
WHT/GRN (Horn Ring)
RED/WHT (Aux. Power)
WHT/BRN (Wail Tone)
WHT/RED (Yelp Tone)
WHT/ORG (Hands-Free)
WHT/YEL (Airhorn)
WHT/VIO (Push To Talk)
WHT/BLU (MIC +)
WHT/BLK (MIC -)
BLK
RED
BLU
TO
TWO-WAY
RADIO SPEAKER
BLU
+ -
TO
HORN
RELAY
OUTPUT
CUT
HERE
6 Position
Connector
9 Position
Connector
The installation of your Beta™ siren amplifier will be complete after the fuse block wire is connected to the POSITIVE (+) terminal of
the battery. After this connection has been made, visually inspect the fuses at the back of the amplifier and at the battery. If either of
these fuses is blown, carefully inspect all of the circuit wires and make sure they are wired correctly. Replace the blown fuses with
ones of an identical amp rating as the original. If these fuses blow after installation or activation, contact Whelen Engineering
Technical Support.
Connecting to your horn relay:
1.
Locate your vehicle’s horn relay. Now locate the wire that connects the
vehicle horn to the horn relay output and cut this wire.
2. Extend each end of the cut wire (using a minimum 16 gauge wire) to a
user supplied SPDT horn transfer switch.
3. Connect the wire coming from the horn relay output to the switch “wiper”
as shown below.
4. Connect the wire coming from the horn to one side of the switch as
shown below.
5. Connect the WHITE/GREEN wire from the 9-position connector to the
other side of the switch as shown below.
BETA™ SIREN SPECIFICATIONS
12 Volt 24 Volt
INPUT VOLTAGE 13.5 VDC ± 20% 26.5 VDC + 20%
INPUT CURRENT (OFF) 0 mA 0 mA
INPUT CURRENT (STANDBY) 120 mA (TYP.) 60 mA (TYP.)
INPUT CURRENT (SIREN) 8 Amps (TYP.) 4 Amps (TYP.)
OUTPUT VOLTAGE 34 V RMS (MAX.) 34 V RMS (MAX.)
SPEAKER (1) 11 ohm (1) 11 ohm
OUTPUT POWER @ 15 VDC 105 WATTS (MAX.) 105 WATTS (MAX.)
H/R VOLTAGE INPUT VOLTAGE or GROUND INPUT VOLTAGE or GROUND
H/R CURRENT 15 mA (TYP.) 15 mA (TYP.)
OPERATING TEMP. -30° C. to +60° C. -30° C. to +60° C.
OPERATING HUMIDITY 95% NON-CONDENSING 95% NON-CONDENSING
RADIO INPUT 0 dB (TYP) 0 dB (TYP)
MIC (-) GRND GRND
MIC (+) 0V to 2V (Peak to Peak) 0V to 2V (Peak to Peak)
CAUTION
Loud siren noise can cause
hearing damage and/or loss.
Refer to OSHA Section 1910.95 prior
to putting ANY siren into service!
Wear
Protection!
ACTIVATION OF THIS
SIREN MAY DAMAGE
UNPROTECTED EARS!