Question about Impulse MVA-14 Multi Video Amplifier Car Audio Amplifier

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Red light item does not power on....... :(

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Your amp is either not grounded properly or is fried.. check your ground and than repost your question

Posted on Feb 23, 2008

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The red protect light comes on, i dont know how to make it go green so it will work. please help!!


Devices with several light emitting indicators would each display as observation of manufacturers installed features. Red indication is power cciuit indication, yelow as alternate warning where green is indication of regular fucntionality. Once the device is least malfunct, every light is an equal expectation. Usually with amplifeiers, the red light has to be on throughout until stereo became powered on to porduce green light effects as radio expectations.

Feb 14, 2011 | Volfenhag ZX-8200 Car Audio Amplifier

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Amplifier turns on green, then red. I opened the housing and found a burnt black square item with three soldered pins onto the board. Note, there are many of these pieces lining both sides of the board.


That would be the MosFET's used in the Power supply or in the Output channel stages. More than likely its the output ones, the power supply ones usually blow the fuse as soon as power is hooked up. The RED led comes on to notify you that there is a problem with some part of the amp. In this case it could be DC on Speaker ouputs or Power supply voltage mismatch. It can usually be repaired depending on if the PCB was dammaged or not. the parts arent expensive ($3 - 7 a peice inline)

Dec 23, 2010 | Kicker IX702 Car Audio Amplifier

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What does the red and green light mean ???


red and green light? there is most likely a protection and a power light. The red I assume would either be a protection light or a clipping light signal. Does the amp kick off then these lights kick on red then to green?

May 31, 2010 | Planet Audio VX4002 Car Audio Amplifier

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Red light keeps flashing


While I cannot find any reference to the flashing red light in the manual, it sounds like the amp is going into a protection mode. I would check the following items:

-Make sure you have the power wires connected to the battery with sufficient size to supply the load. The amplifier is rated for a 30 amp draw, and is fused at 60 amps (2x 30 amp fuses in parallel). I would recommend at least 8 gauge wire as an absolute minimum..and ideally larger than that. To troubleshoot this, try hooking a battery (with fuses inline, of course) with heavy gauge wire directly to the amp. Does the problem go away? If so, the voltage drop due to wire being too small is likely your culprit.

-Make sure your connections are clean. Corrosion at any point can rob your amp of the power it needs for sharp punch and proper operation. Be sure to also check wires at any other connection point. This includes fuse blocks, crimp terminals and at the battery itself. Keep in mind that corrosion does not have to be visible to cause problems. Soldering connections rather than just crimping them (when practical) can help overcome this, as can sealing connections that are exposed to road dirt and grime under the hood.

-Check the impedance of your speakers, and how they are wired. The manual goes into great detail on page 2 about how to properly wire speakers, and what ohm rating each should have. If you are using two 4 ohm speakers wired in parallel on one channel, this is too low impedance for the amp. Either split each 4 ohm speaker onto its own channel or switch to 8 ohm speakers.

While you might check these and still have a problem, hopefully these will eliminate some sources of problems outside of the amplifier itself. Good luck!

Feb 10, 2010 | Pioneer GM-5200T Car Audio Amplifier

1 Answer

On top of the model 704x amplifier their is a red light


Does it say protect under the red light? or power?

Oct 22, 2009 | Car Amplifiers

1 Answer

Protection light just blink on and off


check that your ground wire is connected properly to both your amp and body of vehcile you may need a thicker earth wire

Mar 23, 2009 | Power Acoustik LT-980/2 Car Audio...

1 Answer

Behringer 1500 red light. Amp powers up fan comes on then a have a channel A red light that doesn't go out. No Sound


RED LIGHT MEANS THERE IS EITHER WIRES TOUCHING OR A BAD GROUND. IN WORSE CASE SCENERIO THE A CHANNEL IS BLOWN

Feb 23, 2009 | Behringer EUROPOWER EP1500 Car Audio...

1 Answer

Red Light


Power wire is too thin or ground is not conected to bare metal.

Jun 24, 2008 | Power Acoustik LT-980/2 Car Audio...

1 Answer

Power light


This could be a DC offset condition. Check you manual for what this means. Or other condition. First Disconnect the Subs and try it. If it still goes red then disconnect the RCA's and try it again. If the Led continues to go red after the click then the Amp is hosed. The Click you hear is an internal relay that cuts the subs in after a dely so you do not get the turn on THUMP of the radio at your subs.

Jul 08, 2007 | Hifonics Titan TX 8805 Multi-Channel Amp...

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