STL Apex Operation Manual And Instructions

2809 Business Park Dr • Buda • Texas •78610

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STL Apex® 150 Watt Siren

Operation Manual and Instructions

Congratulations, you are the owner of a STL Apex® 150 Watt Siren! Your siren is equipped with
the latest technology and features at the best value found industry wide, GUARANTEED. In
addition to that, your purchase comes with the STL 2 Year Warranty against any manufacture
defects that may occur with your bar. So please read this document carefully and call Customer
Service at 800-757-2581 Monday - Friday 8:30 AM - 4:30 PM central time if you need assistance.
We are available and happy to help!

Warnings and Notices for Users and Installers
WARNING: Take CAUTION when installing a siren system. Adequate hearing protection
for you and those within the immediate vicinity is mandatory since sirens emit extremely
loud warning tones. Loud noise can cause hearing damage and/or loss. Refer to OSHA

1910.95 prior to operating a siren unit for occupational noise exposure guidelines. .

This document must be delivered to and read by the end user and installer as it serves to
provide you with the required information for proper and safe use of your STL product. Before
operating this or any STL products the user and installer must read this manual all the way
through. You will find important information in this manual that could prevent property damage
and/or serious injury to the user and installer.

STL products are intended to alert pedestrians and other operators of the presence of
personnel, the operation of emergency vehicles, an emergency site, and any warning needs. This
does not ensure that pedestrians or drivers will react, heed, or observe emergency warning
signals. Nor does the use of emergency signals grant or ensure you the right of way. It is your
responsibility to make sure you can proceed safely before driving against traffic, entering an
intersection, responding to a high rate of speed, or walking on or around traffic lanes.

Your STL emergency vehicle devices should be tested daily to insure the device and all it's
functions are operating correctly. If you experience a malfunction contact STL's Customer
Service immediately for troubleshooting options, or a warranty or service claim. You must
ensure sure that the projection of the visual and audible is not blocked by vehicle components
(i.e.: open trunks, visors, compartment doors), vehicles, other obstructions, or people.

STL's sirens and other audible devices project sound in a forward direction and should be
installed in a forward direction that faces away from the occupants of the vehicle.

2809 Business Park Dr • Buda • Texas •78610

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This is professional grade equipment and is intended for strict use by authorized personal only.
It is the user's responsibility to understand and obey all laws regarding emergency warning
devices. You must know and be familiar with all applicable city, sate, and federal laws and
regulations prior to the use of emergency vehicle warning devices.

SpeedTech Lights, Inc. assumes no liability for any loss resulting from the use of this warning
device. Proper installation is vital to the performance of the warning devices and safe operation
of the emergency vehicle. Since the operator is under stressful environments the equipment
must be properly wired and mounted to ensure effectiveness and safety. Therefore controllers
must be properly installed and placed within convenient reach of the operator so eye contact
with the roadway is never lost.

The effectiveness of your STL equipments is highly dependent upon correct mounting and
wiring. Improper wiring and mounting of the warning device will reduce the output and
performance of the equipment. Emergency warning devices frequently require high electrical
voltages and/or currents. Properly protect and use caution around live electrical connections.
Grounding or shorting of electrical connections can cause high current arcing, which can cause
severe personal injury and/or serious vehicle damage, including fire.

Electromagnetic interference can be caused by many electronic devices used in emergency
vehicles. To ensure that this doesn't happen to you, lights bars should be mounted a minimum
of 12" - 34" from the radio antenna and do not power your equipment from the same circuit or
share the same grounding circuit with radio communication equipment. After installation test all
the vehicles equipment together to ensure everything operates free of interference.

Driver and/or passenger airbags bags (SRS) will impact the way you mount your equipment. Any
equipment installed in the deployment area of the airbags will damage or dislodge the airbags
and sensors. This will also reduce the effectiveness of the airbags to protect the passengers and
therefore these areas must be avoided. Installers must make sure that this equipment along
with any parts, hardware, wiring, power supplies, and switch boxes do not interfere with the
airbags, SRS wiring, or sensors.

All STL equipment needs to be mounted and installed according to the vehicle manufactures
instructions and securely attached to a part of the vehicle of sufficient strength to withstand the
forces applied to the equipment. This device should be permanently mounted within the zones
specified by the vehicle manufactures. This especially applies to equipment mounted on the
exterior of the vehicle to avoid dislodging. When mounting units on the interior of the vehicle

2809 Business Park Dr • Buda • Texas •78610

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by a method other than permanent mount is discouraged as the it may become to detached
under aggressive driving conditions such as sudden breaking, collision, or swerving.

PROPER INSTALLATION COMBINED WITH OPERATOR TRAINING IN THE PROPER USE OF
EMERGENCY WARNING DEVICES IS ESSENTIAL TO ENSURE THE SAFETY OF EMERGENCY
PERSONAL AND THE PUBLIC.

Important Points for Your Safety and Longevity of your Equipment

- Installers are required to have a good understanding of automotive electronic, systems and procedures
for proper installation.

- Never stare directly into the LEDs as momentary blindness and/or eye damage may occur.

- Never take any lights through a car wash. Use only water to clean the outer body/lens of your
equipment.

- Never use a pressure washer to clean any STL products. Inspect and test your product daily to insure it
operates properly and is mounted correctly.

- Never cut wires or work on a unit while the unit is still connected to a power source.

- Never install this product or rout any wires through or in the deployment area of the airbag. Doing so
may cause serious personal injury as it will damage or reduce the effectiveness of the airbag by causing
the unit to become a projectile. Reference the owner's manual for your vehicle to find the airbag
deployment area. The User/Installer assumes all responsibility to determine proper mounting location,
based on providing ultimate safety to all passengers in the vehicle.

- If the product requires you to drill holes the installer must ensure that the drilling process does not
damage any vehicle components or other vital parts. Check all sides of the mounting surface before
beginning to drill. Make sure to deburr all drilled holes and remove any metal remnants or shards to avoid
injury and wires from becoming spliced. Grommets are to be installed in all wire passage holes.

- In order for STL products to operate at optimum efficiency a secure and good electrical connection to
the Batteries Ground Post must be made. The recommended procedure requires the unit's ground wire be
connected directly to the NEGATIVE (-) battery post.

- Instruction manuals should be stored in a safe place for reference if you need to reinstall the unit or
performing maintenance. They can also be found at the main site under the product listing at
www.SpeedTechLights.com. If your product is no longer available on the website contact STL's Customer
Service at 1-800-757-2581 for assistance.

2809 Business Park Dr • Buda • Texas •78610

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- If your product requires the use of a control box or remote device to turn on and control your
equipment make sure it is installed in a location that allows both the user and the vehicle to operate
safely in any driving conditions.

- Never activate or control your equipment in hazardous driving conditions.

- FAILURE TO FOLLOW THESE SAFETY PRECAUTIONS, WARNING, NOTICES, AND INSTRUCTIONS COULD
RESULT IN DAMAGE TO THE PRODUCT OR VEHICLE THAT WILL VOID WARRANTY AND/OR SERIOUS
INJURY TO YOU AND YOUR PASSENGER.

SUMMARY OF THE APEX® 150 WATT SIREN

 3 Year Warranty (optional 5 Year Warranty upgrade available)*
 Powered by 12V
 Clear sound frequency
 Amplifier output power of 150-watts
 4 independent lamp input switches rated at 10 amps
 2-position linked sliding lamp input switch for independent front/rear control
 Independent siren tones for easy selection
 Siren tones include: Wail, Yelp, Sting, Siren, Horn, Tool, Hi-lo
 Includes microphone with 2 feet of coiled cable which extends to 6 feet
 Includes 8.5 feet of cable to speaker, power, and 4 other units
 Includes 10 feet of cable from amp to faceplate
 Speaker sold separately
 Amplifier Dimensions: 5" L x 2.5" H x 6.5" D
 Faceplate Dimensions: 5.75" L x 3.25" H x 1.5" D
 7 day money back guarantee*

*See Terms and Conditions

Wiring Diagram for power harness with four (4) colored wires. Siren speaker wires need to soldered and
heat shrinked to the Speaker Wires:

Red (Positive) Main Power
Black (Negative) Main Ground

Brown Speaker wire
Brown Speaker wire

There will be an additional group of cables that will be used for the light control features. The
user will decide the corresponding cable inputs to be used.

Unpacking your STL Product

2809 Business Park Dr • Buda • Texas •78610

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Unpack your unit to identify all parts including but not limited to: lightbar, switch box, brackets,
screws, bolts, wiring harness, fuses, etc.
Some parts may be in small bags
Some parts such as Gutter Brackets, may be in the foam protection. Double check that no parts
are left within the foam protection or left in the box.

Pre-Installation and Testing

BENCH TEST all units prior to installation. Sirens need to be connected to the Positive and
Negative Terminal of the battery. Make sure the
Test Check List:

o Speaker emits appropriate sound volume
o Siren functions are fully operational
o PA and Microphone emit sound
o No physical damage

If you have trouble call Customer Service at 800-757-2581 before proceeding.

Instructions for Mounting and Wiring

IMPORTANT! To ensure proper installation installers are required to have a good understanding
of automotive electronic, systems and procedures for proper installation. When you are drilling
into the vehicle's surfaces, ensure that the area is free of any electrical wires, vehicle upholstery,
fuel lines, etc. that could be damaged. All wiring passing through drilled holes should use
grommets and silicone sealant to prevent wire or moisture damage when passing through
compartment walls.
WARNING! Larger wires and secure or tight connections will ensure longer service life for your
product. It is highly recommended that soldered connections have heat shrink used to protect
the connection. Special attention should be given to the location and method of splicing wires
to make electrical connections to protect these splices from lost power or connection and
corrosion. Insulation displacement connectors are not to be used. To reduce voltage drop,
minimize the number of splices in the wires. The current carrying capacity of wires and fuses will
be significantly reduced under high ambient temperature (e.g. under the hood). Use SXL type
wire in the engine compartment where higher heat resistance is required according to SAE J-

1128. All wires should be in accordance with the minimum wire size and other recommendations
made by the manufacturer and be protected from hot surfaces and moving parts. Grommets,
cable ties, looms, and other installation hardware should be used to anchor and protect all
wiring. Fuses should be properly sized and located as close to the power take off points as
possible to protect the wiring and device. To protect against short circuits, a fuse is included by
STL for all products. Do NOT use a fuse with a higher amp rating than the initial fuse included.
Do NOT use Circuit Breaks with STL Products. Ground terminations should only be made directly
to the battery.

2809 Business Park Dr • Buda • Texas •78610

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Mounting the STL Apex 150 Watt Siren

 The STL Apex 150 Watt siren is composed of an amplifier box and a separate controller.

Both components must be installed in the interior of the vehicle.

Wiring

 The STL Apex 150 Watt siren has a cable harness with four (4) cables coming from the

unit. These are your speaker and power cables.

 Solder and heat shrink each speaker cable to the cables provided in your siren system.

 Make sure the cables from the siren system are the correct cables that are meant

to be wired to the speaker.

Maintenance

While STL's product's are very durable, there are some things you need to keep in mind and
practice to preserve the longevity and function of your bar.

 Never take any STL Products through a car wash, such as a pressure washer, automatic

car wash, brushes that will scratch your equipment or similar car washes or equipment
where chemicals, high pressure water, and materials may scratch or damage your
equipment.

 Use Water (H20) with a soft cloth to clean your Speaker.

Parts List

Amplifier

Controller

RJ45 cable

2 wire harness bundles

Trouble Shooting

All Manufacture Defects are covered under the STL Warranty accordingly. Warranty is void with

disassembly or rewiring of STL Products. If you are unsure how to trouble shoot your Siren or

Speaker for any reason call Customer Service immediately for assistance at 800-757-2581.

Problem

Scenarios

Possible Cause

Trouble Shooting

2809 Business Park Dr • Buda • Texas •78610

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Static

No Sound

Muffled or Crackling
Sound

Siren is powered on
but no sound from
speaker.

Electrical interference OR
Bad amplifier

Improper Ground

The siren may be blown or
have a short

Check the ground cable to ensure that the siren is
grounded correctly and its cables have no nicks or cuts in
the wiring cause electrical interference from the chasse.

Disconnect the speaker and test the amplifier, the tones
can be heard faintly from the amplifier and if there is static
heard from the amplifier the amplifier will need to come in
for service.

Move the ground to the battery terminal. If already
grounded correctly, check how the siren amplifier is
secured to the vehicle. If the screws securing the amplifier
can cause electrical interference if screwed the floor of the
vehicle where metal is contacting the amplifier.

If test are inconclusive, contact our customer service
department at 1-800-757-2581 to place a warranty claim.

Test another speaker to compare sound, if another speaker
is working with no static, contact our customer service
department at 1-800-757-2581 to place a warranty claim.
Test another speaker to compare sound, if another speaker
is working with no issues, contact our customer service
department at 1-800-757-2581 to place a warranty claim.

Stay Safe and Continue Lighting the Way® with SpeedTech Lights®

We know that Trust us Earned®! Thank you for giving STL the opportunity to earn your business
and trust. Visit www.SpeedTechLights.com for any additional information and services regarding
STL Warranty, Return Policy, Videos, or any other Customer Service needs you deem necessary.
Shop with Confidence® with SpeedTech Lights!