Galls SK145 User manual

2562042A
REV. A 604
Printed in U.S.A .
INSTALLATION INSTRUCTIONS FOR
SK145 COMPACT SPEAKER
SAFETY MESSAGE TO INSTALLERS OF SIREN SPEAKERS
WARNING
The lives of people depend on your proper installation
and servicing of Galls products. It is important to read
and follow all instructions shipped with the products.
In addition, listed below are some other important
safety instructions and precautions you should follow:
Before Installation
Qualifications
• To properly install an electronic siren: you must have a
good understanding of automotive electrical procedures
and systems, along with proficiency in the installation
and service of safety warning equipment. Always refer to
the vehicle's service manuals when performing
equipment installations on a vehicle.
Sound Ha ards
• Your hearing and the hearing of others, in or close to
your emergency vehicle, could be damaged by loud
sounds. This can occur from short e posures to very loud
sounds, or from longer e posures to moderately loud
sounds. For hearing conservation guidance, refer to
federal, state, or local recommendations. OSHA
Standard 1910.95 offers guidance on “Permissible Noise
E posure.”
• All effective sirens and horns produce loud sounds (120
dB) that may cause permanent hearing loss. Always
minimize your e posure to siren sound and wear hearing
protection. Do not sound the siren indoors or in enclosed
areas where you and others will be e posed to the sound.
• Galls siren amplifiers and speakers are designed to work
together as a system. Combining a siren and speaker
from different manufacturers may reduce the warning
effectiveness of the siren system and may damage the
components. You should verify or test your combination
to make sure the system works together properly and
meets federal, state and local standards or guidelines.
During Installation
• DO NOT get metal shavings inside the product. Metal
shavings in the product can cause the system to fail. If
drilling must be done near the unit, place an ESD
approved cover over the unit to prevent metal shavings
from entering the unit. Inspect the unit after mounting
to be sure there are no shavings present in or near the
unit.
• DO NOT connect this system to the vehicle battery until
ALL other electrical connections are made, mounting of
all components is complete, and you have verified that
no shorts e ist. If wiring is shorted to vehicle frame, high
current conductors can cause hazardous sparks resulting
in electrical fires or flying molten metal.
• Be sure the siren amplifier and speaker(s) in your
installation have compatible wattage ratings.
• In order for the electronic siren to function properly, the
ground connection must be made to the NEGATIVE
battery terminal.
• Sound output will be severely reduced if any objects are
in front of the speaker. If ma imum sound output is
required for your application, you should ensure that the
front of the speaker is clear of any obstructions.
• Install the speaker(s) as far forward on the vehicle as
possible, in a location which provides ma imum
signaling effectiveness and minimizes the sound
reaching the vehicle’s occupants. Refer to the National
Institute of Justice guide 500-00 for further information.
• Mounting the speakers behind the grille will reduce the
sound output and warning effectiveness of the siren
system. Before mounting speakers behind the grille,
make sure the vehicle operators are trained and
understand that this type of installation is less effective
for warning others.
• Sound propagation and warning effectiveness will be
severely reduced if the speaker is not facing forward.
Carefully follow the installation instructions and always
install the speaker with the projector facing forward.
• DO NOT install the speaker(s ) or route the speaker
wires where they may interfere with the operation of air
bag sensors.
• Installation of two speakers requires wiring speakers in
phase.
• Never attempt to install aftermarket equipment, which
connects to the vehicle wiring, without reviewing a
vehicle wiring diagram - available from the vehicle
manufacturer. Insure that your installation will not
affect vehicle operation and safety functions or circuits.
Always check vehicle for proper operation after
installation.
• DO NOT install equipment or route wiring or cord in the
deployment path of an air bag.
• Locate the control head so the vehicle, controls, and
microphone can be operated safely.
• When drilling into a vehicle structure, be sure that both
sides of the surface are clear of anything that could be
damaged.
After Installation
• After installation, test the siren system and light system
to ensure that it is operating properly.
• Test all vehicle functions, including horn operation,
vehicle safety functions and vehicle light systems, to
ensure proper operation. Ensure that installation has
not affected vehicle operation or changed any vehicle
safety function or circuit.
• After testing is complete, provide a copy of these
instructions to the instructional staff and all operating
personnel.
• File these instructions in a safe place and refer to them
when maintaining and/or reinstalling the product.
Failure to follow all safety precautions and instructions
may result in property damage, serious injury, or death to you
or others.

A. UNPACKING.
After unpacking the kit, carefully check all envelopes,
shipping labels, and tags before removing or destroying
them. Ensure that the parts listed in the KIT CONTENTS
LIST are contained in the packing carton.
B. KIT CONTENTS LIST.
Qty. Description Part Number
1 Bracket, Speaker Mounting 8567077
4 Screw, 1/4" 5/8", Type B 7011165-10
4 Lockwasher, Split 1/4" 7074A015
2 Screw, 5/16-18 3/4" 7002A005-12
2 Lockwasher, 5/16" 7074A020
1 Speaker Assembly SK145
C. INSTALLATION.
WARNING
To avoid reduction of sound output and
damage to speaker, ensure that speaker is
mounted with wires protruding from the
bottom of the speaker when viewing it from
the front.
CAUTION
Before drilling holes in ANY part of a vehicle, be
sure that both sides of the mounting surface are
clear of parts that could be damaged; such as brake
lines, fuel lines, electrical wiring or other vital
parts. Note that the two rear bracket hole locations
MUST be protected during the drilling operation.
a. Select an appropriate mounting location which
provides both adequate support and sufficient clearance for
the speaker assembly. In addition, the mounting location
should provide ma imum signaling effectiveness while
minimizing the sound reaching the vehicle’s occupants.
WARNING
To avoid reduction of sound output, ensure
that the speaker is mounted with the sound
opening facing directly in the direction
intended to warn.
NOTE
Because of the variety of vehicles and possible
mounting arrangements, installation details and
mounting bracket fabrication must be determined
by the installer.
b. See figure 1. After speaker mounting is
completed, connect the two leads from the speaker to the
electronic siren’s speaker cable. Refer to the instruction
sheet packed with the electronic siren for additional
details.
Figure 1.
-2-
WARNING
ll effective sirens produce loud sounds
which may cause, in certain situations,
permanent hearing loss. You should take
appropriate precautions such as wearing
hearing protection.
c. Test the system for proper operation.
D. BAIL BRACKET MOUNTING.
1. General.
The supplied bracket is designed for mounting
directly on a surface which has been determined to be
suitable for speaker installation. In addition, it may be
used to install the speaker on an adapter bracket fabri-
cated by the installer.
The bracket has two sets of speaker mounting
holes. Use the outer pair of holes when mounting on a
horizontal surface. Use the inner pair of holes when
mounting on a vertical surface. When using the inner pair
of holes (vertical surface mounting), space restrictions may
require removal of the e cess bracket material that
protrudes in front of the speaker.
NOTE
Because of the variety of vehicles and possible
mounting arrangements, installation details and
mounting bracket fabrication must be determined
by the installer.
a. Select an appropriate mounting location which
provides both adequate support and sufficient clearance for
the speaker assembly. In addition , the mounting location
should provide ma imum signaling effectiveness while
minimizing the sound reaching the vehicle’s occupants.
290A502
2
SK145
SPEAKER WIRES
1/4"
LOCKWASHERS (2)
1/4-20 x 5/8"
HEX HEAD CAP
SCREWS (2)
1/4" FLAT
WASHERS (2)

b. Attach the supplied bracket to the speaker
using the 1/4-20 5/8" bolts, washers, and split lockwashers
as shown in figure 2. Do not tighten the bolts at this time.
WARNING
To avoid reduction of sound output and damage to
the speaker, ensure that the speaker is mounted
with the wires e iting from the right side of the
speaker when looking at it from the front.
c. If necessary, remove the bracket from the
speaker. Using the bracket as a template, scribe four drill
positioning marks at the selected mounting location.
CAUTION
Before drilling holes in ANY part of a vehicle, be
sure that both sides of the mounting surface are
clear of parts that could be damaged; such as brake
lines, fuel lines, electrical wiring or other vital
parts.
d. Drill 3/16" mounting holes at the position
marks.
NOTE
Some mounting arrangements may require
installing the bracket on the mounting surface
before securing the speaker to the bracket.
e. Secure the bracket, or assembled unit, unit to
the mounting surface using the 1/4" 5/8" type B screws
and 1/4" lockwashers as shown in figure 1. Position the
front of the speaker perpendicular to a horizontal mounting
surface or parallel to a vertical mounting surface, and
secure the speaker to the bracket with the 5/16-18 3/4"
bolts.
f. Connect the two leads from the speaker to the
electronic siren’s speaker cable. When two speakers are
used, it is necessary to connect them in phase. This can be
accomplished by connecting the two “red” speaker leads to
one lead of the siren’s speaker cable, and the two “black”
speaker leads to the other siren speaker cable lead. Refer to
the instructions packed with the electronic siren for
additional details.
WARNING
All effective sirens and horns produce loud sounds
(120 dB) that may cause permanent hearing loss.
Always minimize your e posure to siren sound and
wear hearing protection. Do not sound the siren
indoors or in enclosed areas where you and others
will be e posed to the sound.
g. Test the system for proper operation.
-3-
Figure 2.
DRILL 3/16" DIA. HOLES (4)
USE BAIL BRACKET AS
TEMPLATE
290A510
4
VERTICAL
MOUNTING
SURFACE
CUT AWAY
EXCESS
BAIL
BRACKET
LOCKWASHERS (2)
FLAT
WASHERS
1/4" (2)
1/4-20 x 5/8"
HEX HEAD
BOLTS (2)
SK145
SPEAKER SPEAKER WIRES
LOCKWASHERS, 1/4" (4)
1/4 x 5/8" TYPE B,HEX
WASHER HD. SCREWS (4)
DRILL 3/16" DIA. HOLES (4)
INTO MOUNTING SURFACE.
USE BAIL BRACKET AS
TEMPLATE
290A5105
HORIZONTAL
MOUNTING
SURFACE
HORIZONTAL
MOUNTING
SURFACE
(REF.)
BAIL
BRACKET
BAIL
BRACKET
(REF.)
LOCKWASHER
1/4-20 x 5/8"
HEX HEAD
BOLTS (2)
SK145
SPEAKER
SPEAKER
WIRES
LOCKWASHERS
1/4" (4)
1/4 x 5/8"
TYPE B,
HEX WASHER
HD. SCREWS (4)
OPTIONAL
MOUNTING
OF SK145
SPEAKER
FLAT WASHERS
1/4" (2)

E. OPERATION.
SAFETY MESSAGE TO OPERATORS OF
GALLS ELECTRONIC SIRENS
AND LIGHT/SOUND SYSTEMS
WARNING
The lives of people depend on your safe
operation of Galls products. It is important to
read and follow all instructions shipped with
the products. In addition, listed below are
some other important safety instructions and
precautions you should follow:
Qualifications
• To properly use an electronic siren and speaker(s):
you must have a good understanding of general
vehicle operation, a high proficiency in the use of
safety warning equipment, and thorough knowl-
edge of state and federal UNIFORM TRAFFIC
CODES.
Sound Ha ards
• Your hearing and the hearing of others, in or close
to your emergency vehicle, could be damaged by
loud sounds. This can occur from short e posures
to very loud sounds, or from longer e posures to
moderately loud sounds. For hearing conservation
guidance, refer to federal, state, or local recommen-
dations. OSHA Standard 1910.95 offers guidance
on “Permissible Noise E posure.”
• All effective sirens and horns produce loud sounds
(120 dB) that may cause permanent hearing loss.
Always minimize your e posure to siren sound, roll
up your windows and wear hearing protection. Do
not sound the siren indoors or in enclosed areas
where you and others will be e posed to the sound.
Only use the siren for emergency response situa-
tions.
Sound Limitations
• Before using the vehicle, check to see if the siren
speakers are concealed from view. If the siren
speaker is not in clear view on the front of the
vehicle, use e tra caution when operating the
vehicle. A concealed siren speaker installation is
less effective at warning others.
• Ma imum sound output will be severely reduced if
any objects are in front of the speaker. If your
installation has obstructions in front of the
speaker, drive even more cautiously.
• Frequently inspect the speaker to ensure that it is
clear of any obstruction, such as mud or snow,
which will reduce ma imum sound output.
-4-
Signaling Limitations
• Be aware that the use of your visual and audible
signaling devices does not give you the right to
force your way through traffic. Your emergency
lights, siren, and actions are REQUESTING the
right-of-way.
• Although your warning system is operating
properly, it may not alert everyone. People may not
hear, see, or heed your warning signal. You must
recognize this fact and continue driving cautiously.
• Situations may occur which obstruct your warning
signal when natural or man-made objects are
between your vehicle and others. This can also
occur when you raise your hood or trunk lid. If
these situations occur, be especially careful.
Driving Limitations
• At the start of your shift, you should ensure that
the light/sound system is securely attached to the
vehicle and operating properly.
• If the unique combination of emergency vehicle
equipment installed in your vehicle has resulted in
the siren controls being installed in a position that
does not allow you to operate them by touch only,
OPERATE CONTROLS ONLY WHILE YOUR
VEHICLE IS STOPPED.
• If driving conditions require your full attention,
you should avoid operating the siren controls while
the vehicle is in motion.
Continuing Education
• File these instructions in a safe place and refer to
them periodically. Give a copy of these instructions
to new recruits and trainees.
Failure to follow these safety precautions may
result in property damage, serious injury, or death to
you, to passengers, or to others.
Refer to the instructions packed with the electronic
siren for operation.

F. SERVICE.
SAFETY MESSAGE TO PERSONNEL SERVICING
GALLS SIREN SPEAKERS
WARNING
The lives of people depend on your proper
servicing of Galls products. It is important to
read and follow all instructions shipped with
the products. In addition, listed below are
some other safety instructions and precau-
tions you should follow:
• Read and understand all instructions in this
manual before servicing the electronic siren or
speaker.
• To properly service an electronic siren or speaker:
you must have a good understanding of automotive
electrical procedures and systems, along with
proficiency in the installation and service of safety
warning equipment. Always refer to the vehicle's
service manuals when performing service on a
vehicle.
• Electronic circuit and speaker repairs must be
performed by a qualified and competent electronic
technician.
• Your hearing and the hearing of others, in or close
to your emergency vehicle, could be damaged by
loud sounds. This can occur from short e posures
to very loud sounds, or from longer e posures to
moderately loud sounds. For hearing conservation
guidance, refer to federal, state, or local recommen-
dations. OSHA Standard 1910.95 offers guidance
on “Permissible Noise E posure.”
• All effective sirens and horns produce loud sounds
(120 dB) that may cause permanent hearing loss.
Always minimize your e posure to siren sound and
wear hearing protection. Do not sound the siren
indoors or in enclosed areas where you and others
will be e posed to the sound.
• DO NOT connect this system to the positive
terminal of the battery until servicing is complete,
and you have verified that there are no short
circuits to ground.
• In order for the electronic siren to function prop-
erly, the ground connection must be made to the
NEGATIVE battery terminal.
• After repair, test the electronic siren and speaker
system to ensure that it is operating properly.
• Galls siren amplifiers and speakers are designed to
work together as a system. Combining a siren and
speaker from different manufacturers may reduce
the warning effectiveness of the siren system and
may damage the components. You should verify or
test your combination to make sure the system
works together properly and meets both federal,
state and local standards or guidelines.
Failure to follow all safety precautions and
instructions may result in property damage, serious
injury, or death to you or others.
-5-

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Providing quality products to professionals who
protect and serve the public is our core purpose. If
you aren’t satisfied with a newly purchased item,
simply return it to us so we can repair it, replace it
or refund your money.