Question about Virtual Reality VR3 Car Amp

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My vr3 amp is in power protect mode. its been that way for about 2 weeks and i dont know how to get it out of that mode. what should i do ?

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I have the same amp with the same problem. its not the wiring, its just not a good amp. this amp needs a spark to turn on in my case.

take the fuse out and put it back in while the amp is on so it sparks and it will usually turn on...i lick my fingers and get the fuse wet on the tips to make sure it works the first time as its a pain in the ***.

it sucks to do every time, but it works

Posted on Nov 25, 2009

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First, check your ground connection-in fact just redo the connection, perhaps "cleaner" metal contact? Check all connections and test the subs and/or mids with a continuity testor to make sure the speakers aren't blown.
Good Luck

Posted on Jun 27, 2009

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1 Answer

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It is being overdriven. Reducing the volume level probably will help

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I used to own a Lanzar amp. I dont know if ours will be the same, but mine had a special safety feature. If i turned it up too loud it would go into it's safety mode and shut itsself down to protect the subs. You can bypass this security setting, but it is not recommended, as it protects your subs from a great deal of power.

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It is in protection mode, it shuts down the amplifiers power supply so that it does not destroy itself. You may have a shorted output transistor.

Dec 22, 2009 | Virtual Reality VR3 Car Amp

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Help!!


Disconnect your speakers and test the amp. If the protection light goes out , check your speaker wires with a meter for resistance and check the speakers for a shorted coil. Hope this helps. If you need further help, post a comment and I can help you further.

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the output is blown. It is in need of service.
There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause.

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2 Answers

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The reason it used to cut-off at 60% volume as you said before,
Is probably due to the "protection circuit mode" being tripped.

You can try resetting it by turning off your CD player ,removing the Batt( + ) and Gnd ( - ) terminals from the amp for a short period. Reconnect them Allow the amp to receive power but not switch on (keep cd player/remote power source off)

If you dont know how to wire the CD player to control the amps power status , the easiest way is to connect the 'power antenna' or similar low voltage throughput wire from the head-unit to the amp's Remote terminal.

My old amp did the same thing ,and would need to be powered off/on before resuming sound output, sometimes I had lots of trouble with the protect mode staying on , even with little or no sound output from headunit.

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It's very likely that the output transistors have failed in the amp. They will need to be replaced.

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