Roadmaster VR3 RT15 Installation Manual

Read First!

Dear Customer,

CONGRATULATIONS. The RT15 Tweeters, when used as described, will give you years of 

dependable service in your car, truck, RV or mini-van. We have taken numerous measures in 

quality control to ensure that your product arrives in top condition, and will perform to your 

satisfaction. In the rare event that your RT15 Tweeters contain a damaged or missing item; 

does not perform as specified; requires warranty service or you have a installation problem, 

DO NOT RETURN THIS PRODUCT TO THE STORE. Please call our TOLL FREE number 

US (800) 445-1797

 and ask to speak with a member of our technical service team, or submit 

your questions by E-Mail to customerservice@roadmasterusa.com and a member of our 

technical service team will respond by E-Mail to your questions. Our in-house technical 

service team will expedite delivery of your part, or advise you on installation, or help 

troubleshoot a problem with you. If your product needs warranty service, our technical 

service team representative will help you obtain the fastest remedy possible under the 

warranty. 

Specifications

Parts

• 1" Kevlar Dome Tweeter

• 0.42 oz. Magnet Weight

• 10 Watts RMS per Speaker

• Frequency Range - 2kHZ - 20 kHZ

The RT15 tweeters can be surface or flush 

mounted. Possible locations for mounting 

the RT15 tweeters are the dashboard, roof 

pillars, interior panels, door panels and 

ceiling panels. For a flush mounted 

installation, there must be a minimum of at 

least 1" of clearance behind the mounting 

surface after the tweeter is installed.

• 25mm KAPTON Voice Coil

• NeFeB Magnet Composition

• Speaker Wire Length 39" per Speaker

Mark Screw Holes

Mark Screw Holes

Mark Wire Hole

Mark Wire Hole

2 Flat Mount  Bases

2 Angle Mount Bases

2 Angllee Mount Bases

e Mount

e Mou

2 Flush Mount  Trim Bezels

2 Retaining Rings

2 Speakers & Wire

Speakers & Wire

ts

The space behind the 

speaker opening must be 

deeper than 1" or 2.54 cm 

to prevent interference 

with any of the vehicle's 

functions or features. 

(i.e.,window operation)

1"

Location

Wiring

What if there is no sound?

1. Your stereo may have a blown fuse. Replace fuse with the same amperage and style.

2. You may have improper wiring. Check all wires for a secure connection. 

What if the sound volume is low?

Your stereo may not have enough power, you may need to install an amplifier to 

drive the speakers. Connect the RCA jacks to an amplifier.

Why do I have a whining noise coming from the speakers?

You may have poor filtering of your alternator. If that is the case then you 

may need to add an alternator filter to the power lead.

Why do I have odd sounding noises coming from the speakers?

You may have corroded battery terminals and/or a weak battery. If the terminals on 

the battery are corroded clean them, then check the sound. If the sound system is still

making noises check battery strength. If it is low recharge or replace the battery.

Why does the speaker have sound coming from one channel only?

First make sure the balance control is set correctly. If the balance is set correctly 

your stereo may be defective or the speaker may be defective. To troubleshoot 

this problem you MUST change both positive and negative leads of each channel with 

the positive and negative leads of the opposite channel, if the same speaker has 

no sound then the speaker is no good, if the opposite speaker has no sound then

your stereo may be defective.

Recommended Method For Splicing Wires

#1

Strip 1/2" of insulation from the ends of the wires.

#2

#3

Twist together and bend as shown.

Wrap with electrical tape.

Mounting

2 1/8"(53.97mm)

Diameter of Hole

1"

Retaining Ring

Flat Base

Speaker & Wire

Trim Ring

2 Surface Mount Trim Bezels

Parts Shown Unassembled

les

s

Mark Screw Holes

Surface Mount

1. Twist the surface mounting bracket 

and flush trim bezel and separate 

them from the speaker and wire

2. Place the flat or angled mounting 

base onto the surface where the RT15 

Tweeter will be installed.  Use a marker 

to mark where the screw holes will be. 

Drill pilot holes with a 1/16" drill bit. If 

you want to run the speaker wires 

behind the mounting surface, you will 

have to mark and drill a hole for that as 

well.

3.  Thread the speaker wire from the 

vehicle's audio system, out through the 

hole in the mounting surface, and 

splice them with the speaker wires as 

shown in the wiring section of this 

manual.

4. Slide the base along the wire, align 

the holes in the base with the pilot 

holes. Use supplied screws to secure 

the base.

5. Place the surface mount trim bezel 

over the speaker and push until the 

base and the bezel can be twisted 

together. 

Flush Mount

Flat Surface Mount

Angled Surface Mount

1. Choose a location in your 

vehicle that has a minimum 

clearance behind it of at least 1". 

Make sure you can temporarily 

remove the mounting surface so 

you can secure the RT15 tweeter 

with the retaining ring.

2. Mark a 2 1/8" diameter circle.

3. Cut out the circle, 

4. Thread the speaker wire from the 

vehicle's audio system, out through 

the hole in the mounting surface 

and through the retaining ring. 

Splice the audio system wires with 

the speaker wires as shown in the 

wiring section of this manual.

5. Take a RT15 speaker fitted with 

the flush mount trim ring and the 

flat mounting base and splice it to 

the speaker wires. (See Wiring)

6. Insert speaker and wire into 

hole.

Flush Mount

THE RT15 CAN BE MOUNTED 3 DIFFERENT WAYS

If you are installing the RT15 speakers to upgrade/replace your existing 

speakers, mark the polarity of the speaker wires, disconnect the speaker 

wires and remove the existing speakers from your vehicle. Temporarily place 

the RT15  speakers in the location you selected in your vehicle and connect 

the existing speaker wires. Temporary placement of the speakers in the 

vehicle helps in estimating length of wiring needed, as well as, how the 

speakers will sound in various locations of the vehicle. 

We understand that automotive audio equipment installations can be 

troublesome at times, even to the most experienced of installation 

technicians. If you are not confident working with electrical wiring, removing 

and reinstalling interior panels, carpeting, dashboards or other components 

of your vehicle, please call our TOLL FREE help line (800)445-1797 and our 

in-house technical service team will answer your installation questions.

Possible Mounting Locations

Color of wires are for illustration only.

When connecting the speaker wires 

to your speakers in a new 

installation, you should follow the 

wiring instructions from your audio 

system’s manufacturer. 

For most systems the positive wire 

attaches to the positive speaker 

terminal and the negative wire 

attaches to the negative terminal. 

If you are installing the RT15 

speakers to upgrade/replace your 

existing speakers, mark the polarity 

of the speaker wires, disconnect the 

speaker wires and remove the 

existing speakers from your vehicle. 

Rear Channel

Car Stereo

RT15 Tweeters

Front Channel

+

+

95.5

Angled Surface Mount

Flat Surface Mount

Frequently Asked Questions

NOTES

Limited Warranty

Give Us a Call, We'll Help You Install

Before installing this product, you must check the vehicle's manual for locations of 

safety equipment such as air bags and CO2 systems installed in the vehicle. Accidental 

deployment of air bags may result in serious injury. 

GIVE US A CALL, WE'LL HELP YOU INSTALL.

1-800-445-1797

PLEASE DO NOT RETURN PRODUCT TO STORE.

Visit us on the WEB

www.vr-3.com

For Information and Technical Assistance,

Call Toll-Free in U.S.A. and Canada. 

VIRTUAL REALITY SOUND LABS

®

 products are designed and manufactured to provide a high level of trouble-free performance. VIRTUAL 

REALITY SOUND LABS

®

 warrants, to the original purchaser, that its products are free from defects in material and workmanship for 30 days 

from the date of original purchase. As part of our commitment to product excellence, VIRTUAL REALITY SOUND LABS

®

and/or its affiliates 

routinely improve the designs, materials or production methods of its existing products. Because it is impractical to publicize all changes in 

every product, we reserve the right to make such changes without notice.

CONDITIONS OF WARRANTY:

If during the 30 day warranty period your new product is found to be defective,  VIRTUAL REALITY SOUND LABS

®

 will repair such defect, or 

replace the product, without charge for parts or labor subject to the following conditions:

1. All repairs must be performed by VIRTUAL REALITY SOUND LABS

®

 and/or its affiliates in Eatontown, New Jersey.

2. The equipment must not have been altered or been damaged through negligence, accident, or improper operation.

3. The replacement of parts are exempted from this warranty when replacement is necessary due to normal wear and tear.

4. All warranty claims must be accompanied by a copy of the sales receipt or bill of sale.

5. Repair or replacement parts supplied by VIRTUAL REALITY SOUND LABS

®

 under this warranty are protected only for the unexpired portion 

of the original warranty.

6. In the case of car stereos, this warranty does not extend to the elimination of car static or motor noise; correction of antenna problems; 

costs incurred for the removal or reinstallation of the product; damage to tapes, speakers, accessories or car electrical systems.

7. VIRTUAL REALITY SOUND LABS

®

 will not be responsible for any charge incurred for installation.

OWNER’S RESPONSIBILITIES:

VIRTUAL REALITY SOUND LABS

®

 will make every effort to provide warranty service within a reasonable period of time. 

SHOULD YOU HAVE ANY QUESTIONS ABOUT SERVICE RECEIVED, OR IF YOU WOULD LIKE ASSISTANCE IN OBTAINING SERVICE, 

PLEASE CALL TOLL FREE 1-800-445-1797, 8:30am - 4:30pm EST.

In order to provide you with the proper warranty service, we request that you adhere to the following procedure:

1. Include a copy of your sales receipt or bill of sale with your unit when it is returned for warranty service.

2. If it is necessary to return your product for service, please return it securely packed, preferably in the original shipping carton, and freight and 

insurance prepaid to the following address: VIRTUAL REALITY SOUND LABS, Service Department, 41 James Way, Eatontown,  New Jersey 

07724.

3. Please include a detailed explanation of the problem you are having.

4. If your product is found by VIRTUAL REALITY SOUND LABS

®

 to have a defect in material or workmanship, within the warranty period, it will 

be repaired or replaced at no charge and returned to you prepaid.  Where permitted by Iaw VIRTUAL REALITY SOUND LABS

®

 liability shall be 

limited to that set forth in this warranty. This warranty shall be the exclusive remedy of the purchaser.

VIRTUAL REALITY SOUND LABS

®

 makes no other warranty of any kind, expressed or implied; and all implied warranties, are hereby 

disclaimed by VIRTUAL REALITY SOUND LABS

®

 and excluded from this warranty, VIRTUAL REALITY SOUND LABS

®

 and/or its affiliates, the 

manufacturer, distributor and seller shall not be liable for any injury, loss or damage, incidental or consequential, arising out of the use or 

intended use of the product.

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