Roadmaster VRT18 Prospecto

Dear Customer,
CONGRATULATIONS. The VRT18 Ribbon 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 VRT18 Ribbon 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@vr-3.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. 

• 150 Watts Maximum Power per Pair
•  80 Watts RMS per Pair
•  Sensitivity: 90 db 1W/1M
•  Crossover Frequency: 
    3,500 Hz – 12 db / Octave

The VRT18 Ribbon tweeters can be surface or 
angle mounted. Possible locations for 
mounting the VRT18 Ribbon tweeters are the 
dashboard, roof pillars, interior panels, door 
panels and ceiling panels. 

• Impedance: 4 Ohms per Tweeter
• Frequency Response: 
   3,000 Hz ~ 40,000 Hz ± 3 db
• Ribbon Material: Kapton 8mm X 45 mm

Ribbon tweeters use a very low mass metallic ribbon to reproduce faster, more sparkling 
highs. Dome tweeters use the same type of voice coil as regular speakers.

Because “Ribbons” do not use a voice coil they do have lower impedance than dome 
tweeters. This is corrected by a built-in impedance matching transformer that gives them a 
constant 4 Ohm impedance.

Yes. The human ear cannot hear sounds above 20,000 Hz, but it can perceive harmonics 
well above that. Ribbon tweeters are known for exhibiting extremely wide frequency 
response.

The Crossover network protects the Ribbon tweeters from being damaged by low 
frequencies. This permits the Ribbons to play at higher volume settings.

Call Technical Service (1-800-445-1797) for assistance.

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

Twist together and bend as shown.

Wrap with electrical tape.

Flat Surface Mount
1.  Attach the flat surface mount 
brackets to the Ribbon tweeters using 
the supplied screws.

2.   Attach the brackets to the selected 
location using the supplied screws.

3.    Route the wires to the Crossover 
network and connect them by pushing 
down on the Quick release terminals 
and inserting the wires into the holes. 
Release the terminal to secure the 
wire.

Angled Surface Mount
1. Attach the angled surface mount 
brackets to the Ribbon tweeters 
using the supplied screws

2.  Attach the brackets to the 
selected location using the supplied 
screws.

3. Route the wires to the Crossover 
network and connect them by 
pushing down on the Quick release 
terminals and inserting the wires 
into the holes. Release the terminal 
to secure the wire.

If you are installing the VRT18 Ribbon 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 VRT18 Ribbon 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

Connect the “Front Channel’ speaker wires to the Crossover network inputs. 
The Crossover network has crossover circuits for both Left & Right channels. 
Observe proper polarity for each pair of speaker wires.

Connect the VRT18 Ribbon Tweeter wires to the Crossover network outputs, 
observing proper polarity for each tweeter.

Wires may be spliced using the method shown in the drawing below, or use 
the supplied “Scotchlok” connectors. 

NOTES

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.

©2008 Intellectual Solutions Inc.,  All rights reserved. All designs, logos and images are the exclusive property of  Intellectual Solutions Inc. and/or its affiliates. U.S. and Foreign 

Patents Pending. 072308  Printed in China 00000

2 Ribbon Tweeters

Crossover Network

2 Flat Mounting Brackets

2 Angle Mounting Brackets

2 Tweeter Bezels

10 Small Screws

12 Long Screws

2 Hook and Loop Fasteners

4 Wire Splices

10 Mounting Clips

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 

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.

Front Right Channel

Front Left Channel

Front Left Tweeter

Front Right Tweeter

95.5

Crossover Network

HEAD UNIT