4 RCA Line Inputs
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.
| FIGURE 1. | Speaker | ||
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LINE OUTPUTS |
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| Antenna wires |
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Generic Car Stereo 
LEFT CHANNEL | RIGHT CHANNEL |
Shielded RCA Cable
The
unamplified signals to pass through the amplifier, to be used in a multiple amplifier stereo system.
5 Amplifier Settings
Gain Control The GAIN control matches the line output of your car stereo’s RCA jacks to the line inputs of the amplifier. When you have
GAIN 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
MIN MAX 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
| The frequency adjustment screw (FREQ.) only has an effect if the crossover switch is set to “BASS” or “TREBLE”, it has no |
FREQ | 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 |
50Hz 250Hz | 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 |
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| frequencies coming from the sub woofer(s). |
| 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. |
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)
6 Speaker Wiring & Options
Frequently Asked Questions
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.
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
When the switch is set to (FLAT) the full audio signal will power a pair of full range speakers.
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.
Do I need a stiffening capacitor with this amplifier?
It never hurts to have extra reserve power when operating an amplifier of this caliber.
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.
LEFT CHANNEL | RIGHT CHANNEL |
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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 cross- over switch to FLAT.
The FLAT setting allows the full range of sound to the speakers. When the cross- over switch is set to FLAT, the FREQ. ad- justment screw has no effect.
Switch Settings
BASS FLAT TREBLE | OFF ON |
CROSSOVER | BASS BOOST |
| (optional) |
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.
GIVE US A CALL, WE'LL HELP YOU INSTALL.
PLEASE DO NOT RETURN PRODUCT TO STORE.Visit us on the WEB
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www.vr-3.com
For Information and Technical Assistance, Call
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 am- plifier. Install the converter according to the manufacturers’ instructions.
Shielded RCA Cable
Not IncludedConnect two single voice coil subwoofers to the ampli- fier, 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.
Switch Settings
BASS FLAT TREBLE | OFF ON |
CROSSOVER | BASS BOOST |
| (optional) |
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 |
1-800-445-1797
Limited Warranty
VIRTUAL REALITY VIDEO LABS® products are designed and manufactured to provide a high level of
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.
High Level to Low Level Input Adaptor
Not Included
BASS FLAT TREBLE | OFF ON |
CROSSOVER | BASS BOOST |
| (optional) |
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
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.
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.
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
| Do not wire a second 4 ohm sub woofer in parallel, | Figure 4. |
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| this may result in damage to the amplifier. |
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Switch Settings
BASS FLAT TREBLE | OFF ON |
CROSSOVER | BASS BOOST |
| (optional) |
TOLL FREE
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.
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