Roadmaster Four Channel Amplifier VRA4.0 Leaflet
Read the following wiring instructions very carefully. If you any trouble understanding any
of these instructions, have the amplifier professionally installed by an experienced technician.
Incorrect wiring will prevent the amplifier from operating, or will damage the amplifier.
of these instructions, have the amplifier professionally installed by an experienced technician.
Incorrect wiring will prevent the amplifier from operating, or will damage the amplifier.
FRONT OF UNIT
REAR OF UNIT
Front Channel
"RCA" Inputs
Rear Channel
"RCA" Inputs
Front Channel
3 Way Crossover
Switch
Rear
X-OVER
Adjustment
Front
X-OVER
Adjustment
Front Channel
Bass Boost
Terminals for Rear Speakers
(Left & Right)
Terminals for Front Speakers
(Left & Right)
Front Channel
Stereo / Bridge
Switch
Rear Channel
Stereo / Bridge
Switch
Rear Channel
3 Way Crossover
Switch
Rear Channel
Bass Boost
25 Amp Fuse
Terminals for
12 Volt DC Power,
Remote Switch,
and Chassis Ground
1. Disconnect the negative(-) battery terminal from the negative battery post.
2. Remove the fuse(s) from the amplifier.
3. Strip Ω" 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 maunfacturer's installation instructions.
2. Remove the fuse(s) from the amplifier.
3. Strip Ω" 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 maunfacturer's installation instructions.
4. Install a 30 amp fuse or 30 amp circuit breaker in the 8 gauge power wire as close to the battery as practical.
5. Then route the 8 gauge power wire from the 30 amp fuse or circuit breaker to the rear of the amplifier.
6. Strip 1/2" width of insulation from the end of the 8 gauge power wire.
7. Attach a spade lug on the end of 8 Ga. wire.
7. Loosen screw to open POWER connector plates on rear of amplifier.
8. Insert the spade lug between between the connector plates. Turn screw until power cable is tight.
5. Then route the 8 gauge power wire from the 30 amp fuse or circuit breaker to the rear of the amplifier.
6. Strip 1/2" width of insulation from the end of the 8 gauge power wire.
7. Attach a spade lug on the end of 8 Ga. wire.
7. Loosen screw to open POWER connector plates on rear of amplifier.
8. Insert the spade lug between between the connector plates. Turn screw until power cable is tight.
1. Power Terminal
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 amplifier as possible.
3. Drill a pilot hole with a 1/16" drill bit.
2. Find good, non rusted chassis metal, as close to the amplifier 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.
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
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
3. Ground Terminal
After Market Positive Terminal
(
+
)
In-line 30 amp Fuse or Circuit Breaker
(not included)
Vehicle's Positive(
+
)
12 volt power cable
To Amplifier Power Terminal
The REMOTE wire connection automatically turns on your amplifier when your stereo is turned on.
On most stereos, this wire is marked as the REMOTE, ACCESSORY, or POWER ANTENNA.
2. Remote Terminal
1. Locate the REMOTE, ACCESSORY, or POWER ANTENNA on the stereo. (Refer to your stereo's owner's manual.)
2. Splice REMOTE, Accessory or Power Antenna wire from rear of the stereo to a length of wire that will
reach the rear of the amplifier
3. Loosen screw and open REMOTE connector plates on rear of amplifier.
4. Insert wire end between the REMOTE connector plates.
5. Tighten screw closing REMOTE connector plates on wire.
2. Splice REMOTE, Accessory or Power Antenna wire from rear of the stereo to a length of wire that will
reach the rear of the amplifier
3. Loosen screw and open REMOTE connector plates on rear of amplifier.
4. Insert wire end between the REMOTE connector plates.
5. Tighten screw closing REMOTE connector plates on wire.
• 400 Watts Total Peak Power
• 4 X 100 Watts Peak into 4 Ohm @ 1Khz (+/- 5%)
• 4 X 50 Watts RMS into 4 Ohm @ 1 Khz (+/- 5%)
• Measured at 14.4 VDC Input Voltage
• Frequency Response: 20 Hz to 35,000 Hz +/- 3 db
• THD: Less than 1% All Channels
• Dimensions: 2î H X 10.25î W X 11.5î D
• 4 X 100 Watts Peak into 4 Ohm @ 1Khz (+/- 5%)
• 4 X 50 Watts RMS into 4 Ohm @ 1 Khz (+/- 5%)
• Measured at 14.4 VDC Input Voltage
• Frequency Response: 20 Hz to 35,000 Hz +/- 3 db
• THD: Less than 1% All Channels
• Dimensions: 2î H X 10.25î W X 11.5î D
• Input Sensitivity: 250 mv to 6 Volts
• Signal to Noise Ratio: Greater than 90 db
• Bass Boost (Mega Bass ô): 0 or +6 db
• Adjustable Crossover Freq.: 30 Hz to 180 Hz
• Output Impedance: 4 Ohm Recommended
• Bridgeable? : Yes (4 Ohm Impedance Minimum)
• Fuse: 1 X 25 Amp Automotive Blade Type
• Signal to Noise Ratio: Greater than 90 db
• Bass Boost (Mega Bass ô): 0 or +6 db
• Adjustable Crossover Freq.: 30 Hz to 180 Hz
• Output Impedance: 4 Ohm Recommended
• Bridgeable? : Yes (4 Ohm Impedance Minimum)
• Fuse: 1 X 25 Amp Automotive Blade Type
Recommended Method For Attaching Wires to Terminals
1. POWER WIRE
When connecting the power wire place
the spade terminal under the contact plate, and
the forks around the screw, then tighten the screw.
the spade terminal under the contact plate, and
the forks around the screw, then tighten the screw.
2. REMOTE WIRE
To connect the remote wire place the
twisted end under the contact plate and tighten screw.
twisted end under the contact plate and tighten screw.
3. GROUND WIRE
To connect the supplied ground wire, remove the
screw and contact from the ground terminal on
the rear of the amplifier. Put the screw through the
contact plate then through the ground wire, then
tighten the screw.
To connect the supplied ground wire, remove the
screw and contact from the ground terminal on
the rear of the amplifier. Put the screw through the
contact plate then through the ground wire, then
tighten the screw.
1. POWER WIRE
2. REMOTE WIRE
3. GROUND WIRE
You may purchase shielded RCA cables that have a remote wire that is built right into the cable.
This type of cable makes it possible to route both RCA cable and remote wire at the same time.
This type of cable makes it possible to route both RCA cable and remote wire at the same time.
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.
• 1 Ground Wire
• 25 Amp Fuse
• 1 Self Tapping Screw
• 4 Mounting Screws
• 4 Flat Washers
• Spade Terminal
Virtual Reality Sound Labs
S E R I O U S S O U N D
Dear Customer,
CONGRATULATIONS. The VRA4.0 Four Channel Amplifier, 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
VRA4.0 Four Channel Amplifier contains a damaged or missing item, does not perform as specified, requires
warranty service or you have a installation problem.
CONGRATULATIONS. The VRA4.0 Four Channel Amplifier, 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
VRA4.0 Four Channel Amplifier contains 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.
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.
When mounting the amplifier, make sure there is enough room for access to make
adjustments to the switches and adjustment screws.
adjustments to the switches and adjustment screws.
Mark the holes for the 4 mounting screws in
the 4 mounting brackets with a marker/pen.
the 4 mounting brackets with a marker/pen.
Drill 4 pilot holes with electric drill and 1/16" bit,
make sure there is nothing behind mounting surface
that can be damaged when drilling the holes.
make sure there is nothing behind mounting surface
that can be damaged when drilling the holes.
(Safety glasses should be worn at this time.)
Secure amplifier with included screws and
washers using Phillips screwdriver.
washers using Phillips screwdriver.
3.
4.
2.
With a hammer and nail set/center punch,
make dimple marks on the mounting
surface for each mounting screw.
make dimple marks on the mounting
surface for each mounting screw.
Water Damage: Do not install this amplifier in a location that will expose it to water or moisture.
Dust or Dirt: Do not install this amplifier in a location that will expose it to dusty or dirty conditions.
Modifications: Do not open the amplifier for any reason, or modify the amplifier in any way. If
modified in any way a fire hazard or malfunction may occur. Modification will void the warranty.
Dust or Dirt: Do not install this amplifier in a location that will expose it to dusty or dirty conditions.
Modifications: Do not open the amplifier for any reason, or modify the amplifier in any way. If
modified in any way a fire hazard or malfunction may occur. Modification will void the warranty.
Tools Needed For Installation:
Tools Needed For Installation:
We recommend an Amplifier Installation Kit containing the following parts:
We recommend an Amplifier Installation Kit containing the following parts:
• Power Wire - 8 Gauge w/Terminal Lug
• Remote Wire - 20 Gauge OK
• Remote Wire - 20 Gauge OK
• Power Wire - 8 Gauge w/Terminal Lug
• Remote Wire - 20 Gauge OK
• Remote Wire - 20 Gauge OK
• Speaker Wire - 16 to 12 Gauge
• Input Wires - Shielded RCA cables
• Input Wires - Shielded RCA cables
• Speaker Wire - 16 to 12 Gauge
• Input Wires - Shielded RCA cables
• Input Wires - Shielded RCA cables
• RCA "Y" Adaptors
• After-Market Battery terminal
• After-Market Battery terminal
• RCA "Y" Adaptors
• After-Market Battery termina
• After-Market Battery termina
l
Allow for air to circulate around the amplifier. Do not mount inverted or upside down. Do not cover with
carpeting or enclose it behind interior panels. Avoid mounting under a seat.
carpeting or enclose it behind interior panels. Avoid mounting under a seat.
Location
Location
When choosing a location for the amplifier, keep in mind that the amplifier will generate heat. Place the amplifier in
a location that allows for air to circulate around it. Amplifier location and installation will vary from vehicle to vehicle,
depending on physical layout of the vehicle. Carefully consider as many installation locations and configurations as
is practically possible DO NOT COVER the amp with carpet or enclose it behind interior panels. DO NOT mount
inverted or upside down. The amplifier may be mounted vertically.
a location that allows for air to circulate around it. Amplifier location and installation will vary from vehicle to vehicle,
depending on physical layout of the vehicle. Carefully consider as many installation locations and configurations as
is practically possible DO NOT COVER the amp with carpet or enclose it behind interior panels. DO NOT mount
inverted or upside down. The amplifier may be mounted vertically.
Before permanently installing your VRA 4.0 amplifier, place the VRA 4.0 amplifier in the approximate place it will
occupy in your car, run all power and speaker wires inside the vehicle toward the amplifier 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.
occupy in your car, run all power and speaker wires inside the vehicle toward the amplifier 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 amplifier, if the Power Protection light is green, turn off the amplifier and proceed to the next section. If
the Power Protection light is red, review the all of the connections and wires, you may have loose connections, a
bad chassis ground, or inadequate size power wire. After reviewing all the connections and wires, and the problem
persist, call our toll free help line for assistance.
the Power Protection light is red, review the all of the connections and wires, you may have loose connections, a
bad chassis ground, or inadequate size power wire. After reviewing all the connections and wires, and the problem
persist, call our toll free help line for assistance.
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.
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.
• Nail Set/Center Punch
• Phillips Screwdriver
• Phillips Screwdriver
• Nail Set/Center Punch
• Phillips Screwdriver
• Phillips Screwdriver
• Safety Glasses
• Marker/Pen
• Marker/Pen
• Hammer
• Wire Cutter
• Wire Cutter
• Electrical Tape
• Electric Drill with 1/16" bit
• Electric Drill with 1/16" bit
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.
Rear
GAIN
Adjustment
Front
GAIN
Adjustment
25
VRA4.0D
Four Channel
Digital Amplifier