Roadmaster VRA2.0i User's Manual

#1
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PLEASE DO NOT RETURN PRODUCT TO STORE.
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www.vr-3.com
For Information and Technical Assistance,
Call Toll-Free in U.S.A. and Canada.
1-800-445-1797
#2
#3
4 RCA Line Inputs
5 Amplifier Settings
The line inputs on the front of the amplifier receive low level, high impedance signals from the low level RCA outputs of the car stereo. The
amplifier receives the signals and converts them to high level, low impedance signals to be used to drive the speakers. All of the amplifiers
line inputs need to be connected to the car stereo, in order to use all of the speaker outputs.
Gain Control
GAIN
MIN MAX
FIGURE 1.
Speaker
&
Antenna wires
LINE OUTPUTS
The frequency adjustment screw (FREQ.) only has an effect if the crossover switch is set to “BASS” or “TREBLE”, it has no
effect when the crossover is set to FLAT
To set the FREQ. when the crossover is set to BASS, turn FREQ. all the way to the right, this allows a range of sound from
50 Hz - 250 Hz to the sub woofer(s). As you turn the FREQ. to the left (counter clockwise), you will be cutting off the high
frequencies coming from the sub woofer(s).
50Hz 250Hz
LEFT CHANNEL
The GAIN control matches the line output of your car stereo’s RCA jacks to the line inputs of the amplifier. When you have
completed installing the amplifier, turn the gain control to about 1/2 way (recommended). If you have any distortion at this
setting, play a CD or cassette on the car stereo, set the bass and treble at 50%, and set the equalizer, if you have one, to flat
across all frequencies. Also make sure the left & right balance and front & rear fader settings are set in the middle. Never turn
the Gain fully clockwise. This will cause a malfunction.
Frequency Adjustment Screw
FREQ
Generic Car Stereo
Frequently Asked Questions
To set the FREQ. when the crossover is set to TREBLE, turn FREQ. all the way to the left (counter clockwise) this will allow
the full range of sound to the front speakers. As you turn the FREQ. to the right (clockwise), you will be cutting off the low
frequencies coming from the front speakers.
RIGHT CHANNEL
Bass Boost
Shielded RCA Cable
The BASS BOOST switch adds a additional 6dB at 50Hz. It normally is set to off. Turning on BASS BOOST, will not make the
bass sound better, it only adds volume to the lowest frequency.
OFF ON
BASS BOOST
(optional)
The Pre-amp line outputs allow
unamplified signals to pass through
the amplifier, to be used in a multiple
amplifier stereo system.
Can I hook up two speakers to this amplifier?
The VRA2.0 is designed to operate two full range speakers, one on the left channel and one on the right channel.
It can drive two single voice coil subwoofers, one on the left channel & and one on the right channel.
It will also drive a dual voice coil sub woofer, with one coil connected to the right channel, and one voice coil
connected to the left channel.
Can I wire a bridged subwoofer (“Bridge” two channels)?
Yes you can connect a subwoofer by bridging the two channels, see Speaker Wiring and Options.
What if my car radio doesn’t have RCA line outputs?
You will need a converter used to change the signals from the speaker wires to RCA line level inputs. Follow
the converter manufacturer’s installation instructions.
What should I do if my car radio doesn’t have a remote wire?
Connect the amplifier remote terminal to a switched 12 volt circuit controlled by the ignition switch. This will turn
the amplifier off when the ignition switch is turned off.
Why does the Power / Protect LED switch between green & red?
Suspect the power and ground connections, insufficient wire size to carry the current demand,
or an improper impedance load (especially if bridging two channels into one.
6 Speaker Wiring & Options
Why does the Power / Protect LED stay red?
This typically indicates that one or more of the MOSFET output transistors has shorted.
This condition will not fix itself. The amplifier must be returned to Virtual Reality Sound Labs for repair.
To use two full range speakers with the
amplifier, connect one speaker to the
right channel and the other speaker to
the left channel as shown. Set the crossover switch to FLAT.
RIGHT CHANNEL
What is a 3 Way Electronic Crossover?
A 3 Way Electronic Crossover divides the audio signal into two parts, this permits you to customize the amplifier
to power a subwoofer (BASS), or a pair of satellite tweeters like the RoadmasterUSA RT-15 (TREBLE).
When the switch is set to (FLAT) the full audio signal will power a pair of full range speakers.
Do I need a stiffening capacitor with this amplifier?
It never hurts to have extra reserve power when operating an amplifier of this caliber.
Two Full Range Speakers
LEFT CHANNEL
What is the per channel RMS power of this amplifier?
50 Watts RMS per channel times two channels. Consult the specifications in the installation manual.
The FLAT setting allows the full range of
sound to the speakers. When the crossover switch is set to FLAT, the FREQ. adjustment screw has no effect.
Switch Settings
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BASS FLAT TREBLE
OFF ON
CROSSOVER
BASS BOOST
PLEASE DO NOT RETURN PRODUCT TO STORE.
(optional)
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Figure1.
Two Single Voice Coil Subwoofers
THE FRONT OF AMPLIFIER
Connect two single voice coil subwoofers to the amplifier, connect one subwoofer to the right channel and
the other subwoofer to the left channel as shown in
FIGURE 1. Set the crossover switch to BASS.
Adaptors & Cables
If your stereo does not have RCA type
output jacks, a high level to low level
adaptor will need to be purchased. The
high level to low level adaptor takes the
signals from the car stereo’s speaker
wires and converts them to low level, high
impedance signals to be used by the amplifier. Install the converter according to
the manufacturers’ instructions.
For Information and Technical Assistance,
Call Toll-Free in U.S.A. and Canada.
1-800-445-1797
Switch Settings
Shielded RCA Cable
Not Included
BASS FLAT TREBLE
CROSSOVER
Figure 2.
OFF ON
BASS BOOST
(optional)
One Dual Voice Coil Subwoofer
High Level to Low Level Input Adaptor
Not Included
To use one dual voice coil subwoofer with
the amplifier, connect one voice coil to the
right channel and one voice coil to the left
channel as shown in FIGURE 2. Set the
crossover switch to BASS.
Switch Settings
BASS FLAT TREBLE
CROSSOVER
OFF ON
BASS BOOST
(optional)
Figure 3.
Do not splice RCA jacks directly to
the car stereo’s speaker wires.
You must trim the unused speaker wires on the
stereo and wrap with electrical tape as shown
to prevent a short circuit.
One Bridged Sub Woofer
Connect one subwoofer to the amplifier, by
bridging the speaker terminals on amplifier,
connect the subwoofer’s positive(+) terminal
to the positive(+) terminal of the amplifier’s
left channel, connect the negative(-) terminal
of the subwoofer to the negative(-) terminal
of the amplifier’s right terminal. Set the crossover switch to BASS.
Switch Settings
BASS FLAT TREBLE
CROSSOVER
The colors of the jacks on the RCA cables and adaptors shown here are for illustration purposes.
The color of the cables and adaptors that you purchase for installation will vary by manufacturer.
Do not wire a second 4 ohm sub woofer in parallel,
this may result in damage to the amplifier.
Limited Warranty
VIRTUAL REALITY VIDEO LABS® products are designed and manufactured to provide a high level of trouble-free performance. VIRTUAL REALITY
VIDEO 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 VIDEO 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 VIDEO 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 VIDEO 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 VIDEO 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 VIDEO LABS will not be responsible for any charge incurred for installation.
OWNER’S RESPONSIBILITIES:
VIRTUAL REALITY VIDEO 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 VIDEO 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 VIDEO 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 VIDEO LABS liability shall be limited to
that set forth in this warranty. This warranty shall be the exclusive remedy of the purchaser.
VIRTUAL REALITY VIDEO LABS makes no other warranty of any kind, expressed or implied; and all implied warranties, are hereby disclaimed by
VIRTUAL REALITY VIDEO LABS and excluded from this warranty, VIRTUAL REALITY VIDEO 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.
OFF ON
BASS BOOST
(optional)
Figure 4.
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