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Thread: power problem?

  1. #1

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    Default power problem?

    I just finished my install, and have some issues with the speakers cutting out. I have all 4 interior speakers on a 4 channel, and the sub on the bridged 2 channel. when i roll down the windows, and sometimes even just hitting the brakes the speakers cut out momentairly. also there is a slight hiss from the speakers when theyre turned down. the battery and alternator are both fairly new, and the system only does about 800w RMS. what could the problem be? Thanks for the help!

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    That is weird!

    If all speakers and the sub cut out then youve got probably a loose or bad ground somewhere. That would be my first guess.
    polkaudio sound quality competitor since 2005
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    would reversing the phase cut down on the harshness of the tweets? it seems as though my woofers arent playing as loud as the tweets. heres a pic of how theyre installed:


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    Flipping the polarity of the tweeters can help especially when theyre seperated from the mids. I have my left tweeter out of phase for instance. It will allow the tweeters to blend in better with the mids.

    However, what youre describing is not a phasing issue but rather the tweeters output is too high.

    Usually, the crossover will have an attenuator on it to cut down the output but those DB's do not so youre kinda screwed.

    The only way around it is to bi-amp them. If you have a 4 channel amp, run the tweeters thru the crossover and off the front amp channels then run the mids full range off the rear amp channels. This is the best way to run components as you can tune the tweeters independantly of the mids.
    polkaudio sound quality competitor since 2005
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    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

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    Quote Originally Posted by MacLeod
    Flipping the polarity of the tweeters can help especially when theyre seperated from the mids.

    Good advice there Mac ;) .
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    Quote Originally Posted by rodney
    I just finished my install, and have some issues with the speakers cutting out. I have all 4 interior speakers on a 4 channel, and the sub on the bridged 2 channel. when i roll down the windows, and sometimes even just hitting the brakes the speakers cut out momentairly. also there is a slight hiss from the speakers when theyre turned down. the battery and alternator are both fairly new, and the system only does about 800w RMS. what could the problem be? Thanks for the help!
    where do you have power connected to? Straight to the battery?

    Did you use aftermarket speaker wire into the doors or the factory stuff? If you roll down the window and it catches and pulls a wire and say it touches the negative and positive terminals together, itll put the amp into protect. Is it one window imparticular?
    -Cody
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    power goes from battery to dist block to amp. all new 14ga speaker wire. the wires clear the window, and it does it w/ the back windows too, which have no speakers under them.

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    Ground?
    polkaudio sound quality competitor since 2005
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    ground is on the seatbelt bolt

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    do you have a factory or aftermarket radio?
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it

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    alpine 9857

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    and you have the remote hooked up to the blue/white on that right? If so, take it off that one and move it over to the solid red wire and see if that helps.
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it

  13. #13

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    just a question why do u have ur ground bolted to your seatbelt? that cant be good for a ground nothing beats bare metal all my grounds ar screwed down to the frame cause i tried your idea and had nothing but static.

  14. #14

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    The ground is attached to the spot on the frame where the seatbelt is bolted down, which is indeed bare metal.

    The problem of the speakers cutting out has nothing to do with the HU. I hooked up my rear 6x9s to it, and they never cut out when the fronts (amped) did.

    I will try a new grounding spot next, with a ground terminal maybe. It wouldn't by chance be how I have the amps connected to the battery would it? The car's electrical is hooked to the side posts, and i have the amps on the positive top post.

    Also, about the highs out-doing the mids, would it be a good idea to bi-amp them with my 4-channel, and just leave the rears on the HU? will the HU's low power output hurt the 6x9s? I know many dont like it, but sometimes I want rear fill for the rear passengers. I can cut off the internal amp of the HU whenever I want.

    thanks for the help

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