Roadmaster VR3 VRA1.0PSW Leaflet

Dear Customer,
CONGRATULATIONS. The VRA1.0PSW Powered Subwoofer, 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 per-
form to your satisfaction. In the rare event that your VRA1.0PSW Powered Subwoofer contains a damaged or missing item, does not perform 
as specified, requires warranty service or you have an 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,  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.

 

Place the powered subwoofer in a location that allows air to circulate around it. Amplifi er location and installation will vary from vehicle to vehicle 
depending on physical layout of the vehicle. Carefully consider as many installation locations and confi gurations as is practically possible  DO 
NOT COVER the powered subwoofer with carpet or enclose it behind interior panels. DO NOT mount inverted or upside down. The amplifi er 
may be mounted vertically.

Before permanently installing your VRA1.0PSW Powered Subwoofer, place the VRA1.0PSW Powered Subwoofer in the approximate place it 
will occupy in your car. Run all power and speaker wires inside the vehicle toward the powered subwoofer prior to mounting. This will allow you 
to estimate how much wire you’ll need and where to route the wires inside of your vehicle. 

Connect the fused 12 Volt DC power wire, chassis ground cable, and remote wires. (SEE SECTION 3, ELECTRICAL CONNECTIONS)

Turn on the car strereo, if the Power Protection light is green, turn off the stereo and proceed to the next section. If the Power Protection light is 
red, review all of the connections and wires. You may have a loose connection, a bad chassis ground, or an inadequate size power wire. If the 
problem persists after reviewing all of the connections and wires, call our toll-free help line for assistance.

1. DISCONNECT THE NEGATIVE(-) BATTERY TERMINAL FROM THE NEGATIVE BATTERY POST.
2. Strip ½” of insulation from the end of the 8 gauge power wire. Connect the 8 gauge power wire to the 
after-market positive battery terminal according to the manufacturer’s installation instructions.

The REMOTE wire connection automatically turns on your amplifi er when your stereo is turned on.  

On most stereos, this wire is marked as the REMOTE, ACCESSORY, or POWER ANTENNA.

1. The ground connection cable should be attached to clean, unpainted chassis metal for a good electrical connection.
2. Find good, non-rusted chassis metal, as close to the amplifi er as possible.

3. Drill a pilot hole with a 1/16” drill bit. 
4. Use sandpaper to expose an area of bare metal around the pilot hole about the size of a dime.
5. Tightly fasten the provided ground cable with the self tapping sheet metal screw to the chassis metal. 
A loose ground will cause distortion and popping noises in the speakers.

1. Locate the REMOTE, ACCESSORY, or POWER ANTENNA on the stereo. (Refer to your stereo owner’s manual.)
2. Splice the REMOTE, ACCESSORY or POWER ANTENNA wire from rear of the stereo to a length of wire that will
reach the rear of the amplifi er
3. Loosen screw and open REMOTE connector plates on rear of amplifi er. 
4. Insert wire end between the REMOTE connector plates.
5. Tighten screw closing REMOTE connector plates on wire.

3. Install a 25 amp fuse or 25 amp circuit breaker in the 8 gauge power wire as close to the battery as practical.
4. Route the 8 gauge power wire from the 25 amp fuse or circuit breaker to the rear of the powered subwoofer.
5. Strip 1/2” width of insulation from the end of the 8 gauge power wire.
6. Attach a spade lug on the end of the 8 Gauge wire.
7. Loosen screw to open POWER connector plates on rear of amplifi er. 
8. Insert the spade lug between the connector plates. Turn screw until power cable is tight.

• 400 Watts Total Power 
• 100 Watts @ 4 Ohms < or = 1% THD+N. 
   S/N > or = 75 dbA ref. 1 Watt Output @ 14.4 VDC. 
• Measured at 14.4 VDC Input Voltage 
• Frequency Response: 25    150 Hz 
• Dimensions: 18.63” L X 9.25” W X 7.25”H
• Ported ABS Enclosure
• 8” Subwoofer 
• Fuse: 20 Amp Automotive Blade Type
 

• 1 Ground Wire

• 1 Self Tapping Screw

• Nail Set/Center Punch

• Power Wire - 8 Gauge w/ Terminal Lug
• Remote Wire  - 20 Gauge

• Input Wires - Shielded RCA cables

• After-Market Battery Terminal

• Safety Glasses

• Phillips Screwdriver

• Marker/Pen

• Hammer

• Electrical Tape

• Wire Cutter

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

To Amplifier Power Terminal

In-line 25 amp Fuse or Circuit Breaker

(not included)

After Market Positive Terminal (

+

)

Vehicle’s Positive(

+

)

12 Volt power cable

Twist together and bend as shown.

Wrap with electrical tape.

•Electric Drill 
with 1/16” bit

• 20 Amp Fuse

• Spade Terminal

To connect the supplied ground wire, 
remove the screw and contact from the 
ground terminal on the rear of the am-
plifi er. Put the screw through the contact 
plate, then through the ground wire, and 
fi nally tighten the screw.

To connect the remote wire, place the 
twisted end under the contact plate and 
tighten screw.

When connecting the power wire, place 
the spade terminal under the contact 
plate and the forks around the screw. 

 

Then tighten the screw.

• 4 #6 Screws