Whelen BETAMIC User Manual
®
ENGINEERING COMPANY INC.
51 Winthrop Road
Chester, Connecticut 06412-0684
Beta™ Microphone Amplifier
Installation Guide:
Phone: (860) 526-9504
Fax: (860) 526-4078
Internet: www.whelen.com
Sales e-mail: autosale@whelen.com
Canadian Sales e-mail: autocan@whelen.com
Customer Service e-mail: custserv@whelen.com
DANGER! Sirens produces extremely loud emergency warning tones! Exposure to these
tones without proper and adequate hearing protection, could cause ear damage and/or hearing
loss! The Occupational Safety & Health Administration (www.osha.gov) provides information
necessary to determine safe exposure times in Occupational Noise Exposure Section 1910.95.
Until you have determined the safe exposure times for your specific application, operators and
anyone else in the immediate vicinity should be required to wear an approved hearing protection
device. FAILURE TO FOLLOW THIS RECOMMENDATION COULD CAUSE HEARING LOSS!
Safety First
This document provides all the necessary information to allow your Whelen product to be properly and safely installed.
Before beginning the installation and/or operation of your new product, the installation technician and operator must
read this manual completely. Important information is contained herein that could prevent serious injury or damage.
• Proper installation of this product requires the installer to have a good understanding of automotive electronics,
systems and procedures.
• If mounting this product requires drilling holes, the installer MUST be sure that no vehicle components or other
vital parts could be damaged by the drilling process. Check both sides of the mounting surface before drilling
begins. Also de-burr any holes and remove any metal shards or remnants. Install grommets into all wire
passage holes.
• If this manual states that this product may be mounted with suction cups, magnets, tape or Velcro®, clean the
mounting surface with a 50/50 mix of isopropyl alcohol and water and dry thoroughly.
• Do not install this product or route any wires in the deployment area of your air bag. Equipment mounted or
located in the air bag deployment area will damage or reduce the effectiveness of the air bag, or become a
projectile that could cause serious personal injury or death. Refer to your vehicle owner’s manual for the air bag
deployment area. The User/Installer assumes full responsibility to determine proper mounting location, based
on providing ultimate safety to all passengers inside the vehicle.
• For this product to operate at optimum efficiency, a good electrical connection to chassis ground must be
made. The recommended procedure requires the product ground wire to be connected directly to the NEGATIVE
(-) battery post.
• If this product uses a remote device to activate or control this product, make sure this control is located in an
area that allows both the vehicle and the control to be operated safely in any driving condition. DO NOT
ATTEMPT TO ACTIVATE OR CONTROL THIS DEVICE IN A HAZARDOUS DRIVING SITUATION.
• It is recommended that these instructions be stored in a safe place and
referred to when performing maintenance and/or reinstallation of this
product.
• FAILURE TO FOLLOW THESE SAFETY PRECAUTIONS AND
INSTRUCTIONS COULD RESULT IN DAMAGE TO THE PRODUCT OR
VEHICLE AND/OR SERIOUS INJURY TO YOU AND YOUR PASSENGERS!
ACTIVATION OF THIS
SIREN MAY DAMAGE
UNPROTECTED EARS!
CAUTION
Loud siren noise can cause
hearing damage and/or loss.
Wear
Refer to OSHA Section 1910.95 prior
Protection!
to putting ANY siren into service!
Automotive: Sirens/Switches
For warranty information regarding this product, visit www.whelen.com/warranty
©1999 Whelen Engineering Company Inc.
Form No.13421B (050608)
Page 1
The Beta™ Microphone is for use when the application requires the use of your own control switches with a
Beta™ Remote Amplifier or a WPA™ Series Amplifier and you also need an amplified microphone. It is usually
installed in the dashboard of the vehicle. When picking the installation location, because there is drilling, make
absolutely sure it won’t damage any other vehicle components. Install the unit using the illustrations and
measurements provided. Wire the microphone amplifier as shown in the wiring diagram but refer to your BETA or
WPA amplifier instructions for proper installation and operation of control switches.
Volume C ontrol : There is a potentiometer that can be preset with a thin, flat-blade screwdriver through the open
end of the protective cover (see illustration). This will adjust the signal level of the audio going back to the amplifier.
If you experience feedback, the signal level can be adjusted to eliminate it.
RED / WHITE
WHITE / VIOLET
WHITE / BLACK
WHITE / BLUE
WHITE / GREEN
WHITE / BROWN
WHITE / RED
WHITE / ORANGE
WHITE / YELLOW
BLUE
BLUE
ORANGE
OR BETA REMOTE AMPLIFIER
BROWN
WPA SERIES WATERPROOF AMPLIFIER
BLACK
RED
10 AMP
FUSE
(+FEED)
(PTT)
(MIC-)
(MIC+)
(H/R)
(CTRL 1)
(CTRL 2)
(CTRL 3)
(AIRHRN)
BATTERY
BUTT
SPLICES
+
RADIO
RADIO
J2-2
J2-1
J2-4
J2-3
100 WATT
SPEAKER
RED / WHITE
WHITE / VIOLET
WHITE / BLACK
WHITE / BLUE
SWITCH
HORN
FROM
CAR HORN
CIRCUIT
MICROPHONE
AMPLIFIER
CONTROL
SWITCHES
+12V
RELAY
CUT HERE
AND
SPLICE
GREEN
BLACK
BLACK
WHITE / VIOLET
HORN
VEHICLE
MICROPHONE
1
2
3
4
SPECIFICATIONS
INPUT VOLTAGE
10 TO 32 VOLTS
INPUT CURRENT
16mA (MAX)
OUTPUT VOLTAGE
0db (TYP)
OPERATING TEMP.
-30C.TO+60C.
OPERATING HUMIDITY
95% NON CONDENSING
1.50"
.750"
.625" DIA.
Drill 4 mounting holes for #6
sheet metal screws with
appropriately sized drill bit
Volume Level
5
Set Here
.750"
1.50"
CONFIGURATION
MOUNTING HOLE
QTY
1
4
1
1
1
1
PART NUMBER
ITEM
1
2
3
4
5
6
01-0868379-00
43-0145762-00
15-061416-100
07-746078-000
01-0268378-00
46-0725932-00
01-0416246-00
DESCRIPTION
FINAL ASSEMBLY, BETA MIC. AMP.
MICROPHONE 4 POS RT. ANGLE CONN.
#6 X 5/8" PPHSM SS
PLATE, MTG. INTERCONNECT MIC CABLE
ELECTRONIC ASSY., BETA MIC. AMP.
CONTROL CONN. ASSY. MIC AMP.
MICROPHONE HANGER KIT
1
NUT SUPPLIED
W/ MIC CONN.
2
4
3
Page 2
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