Whelen BETAMIC User Manual

®

ENGINEERING COMPANY INC.

51 Winthrop Road
Chester, Connecticut 06412-0684

Beta™ Microphone Amplifier

Installation Guide:

Phone: [phone]
Fax: [phone]
Internet: www.whelen.com
Sales e-mail: [e-mail]
Canadian Sales e-mail: [e-mail]
Customer Service e-mail: [e-mail]

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