Question about Car Amplifiers

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Easy fix one of my channels dont work but when i mess with gain knop it cuts in and out

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  • briguy234 Feb 07, 2008

    thanks

  • briguy234 Feb 07, 2008

    thanks to all

  • toddgilbert Feb 12, 2008

    when i mess with the gain knob my sub comes back in, but with being left alone it cuts out

  • Anonymous Apr 19, 2009

    one ch dont work

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Sounds like the potentiameter has gone bad. Relatively easy fix if you can solder and have access to radio shack (or maybe a slightly better electronics shop). Take the old one in with you. Will probably cost less than $10.

Posted on Feb 07, 2008

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1 Answer

Rear left channel makes my speaker pop cuts in and ou at certain settings


Swap left and right speakers. Does it stay with the speakers if so you have a blown or damaged speaker. If not then swap input cables only. If it stayed with the speaker you now know the amp has a bad channel and needs repair. If it swapped again you either have a bad cable or issue with your source unit.

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2-12 inch kicker comp 4ohms each to conect to a interfire a700.2 amp best wire setup so i dont keep getting a protection led when volume i increased...thanx n advance.


Turn the gain down and try that, usually 25-40 is all you want.

Also make sure the AMP is well ventillated, or it will overheat and cut off...

Id no - go, then wire it without a bridge, two wires from each channel to each speaker.

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1 Answer

Speakers cutting in and out at high volume


The amp is going into protect on the two channels powering the speakers. Turn down the gain on those two channels. You also may want to consider crossing over the speakers a little higher than they are now.

The rating on those speakers are way too high. 6.5's and 6x9's will take 50-100 clean watts tops before they start to break up.

The best solution to get it perfect is....unplug the subs. Turn the gain on the speaker channels all the way down. Then turn up the deck 80% as high as it will go. Play a song. Then increase the gain on the amp until the speakers are as load as they go without distortion. Shut off the car, replugg in the subs and do the same thing. Gain on sub channels all the way down, deck then to 80%, find a bass heavy song, then turn gain up until subs become distorted. If you do this procedure your speakers and subs will be "gain matched" to the proper levels.

Good Luck

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1 Answer

Amps turn off and cut out


You just gotta get your gains set up right. Look Up "How To Set your Gains with a Multimeter" your over powering your subs or speakers and your amplifiers cant keep up. you also have to make sure your speakers are wired to the right ohms. your amp cant handle. if your amp cant handle, for Example:1 Ohms your gonna blow your amps. ......Speakers and subs are a science too.

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1 Answer

What does it mean when the red IND PROTECT light is on? my subs cut in and out, mostly out with the occasional hard hit popping up in the middle of a song. Whats wrong?


You've got the gain to high and the amplifier is clipping the sound frequency causing it to distort. Possible problems are you have a bad speaker(s) and the reading is below 4 ohms. Each of the 4 channels can only take 4ohms. If your bridging 2 speakers to this amp you have to also make sure you are only bridging 4ohms anything lower will cause the amp to overheat. Dont put 2 speakers in parallel on one channel or you will definitely have more problems.

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My Peavey Mark 3 400 CHANNEL 1 does not put out sound. When you turn the pre gain it will cut in for a sec then out. Channel 2 is good. I checked the readings on the pre gain pot on channel 1 and 2 and...


Transfer Channel 2 speakers to Channel 1 to check if it does put out a sound. If it does, it means that your Channel 2 amplifier is defective. However, if it doesn't,
then your Channel 2 speaker is defective. So, have this checked to find out the result. Defective items needs replacement or be repaired. Send us your e-mail for the result so we can further extend our assistance.

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Amp gain problems


amp gain controll need to be changed

Jan 18, 2009 | Car Amplifiers

1 Answer

Right channel doesn't work


check you rca jacks switch sides if the right channel still has no sound then it needs repair if the left channel doesnt work then the rca jacks are messed up

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Another question for zzedly about the speakers cutting out


So, as I see it, your system is hooked up like so:
  • Ch1 = Left speakers, front and back
  • Ch2 = Right speakers, front and back
  • Ch3 = One sub
  • Ch4 = Other sub
One thing you can try is swapping channels. Swap Ch1 with Ch3 and Ch2 with Ch4. Then see if the issue still occurs on the door speakers or do the subs suddenly cut out at loud volume. If the subs start cutting out, that means the issue is with Ch1 and Ch2. If you haven't already, check the RCA connections to Ch1 and Ch2 as well as the gain for all channels. If the gain isn't already set to about 50%, put it there.

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1 Answer

Amp cuts out at certain volume


is the output signal distorted? if not one of the subs could be damaged subs are capable of playing even when damage ,try them 1 at a time to see what happens.

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