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    Dirtrider4eva's Avatar
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    Icon32 Why are my speakers distorting?

    so, i have alpine 6.5" type r speakers all the way around. currently just finished wiring the back two to my alpine 300.4 amp, wired in parallel. hooked them up, all good and fine, then i replaced my cheapo schoche RCA's ( a week later) with Monster Amazon.com: Monster MPC I404 4C-3M Extreme Low Noise 4-Channel Car Stereo RCA Cables (3 meters): Electronics cable 4 channel rcas, and then i got alot of distortion at 0 volume. well i pulled the rca's out, and just turn my stereo on to see what happened, still a ton of distortion. why!!?? before this wasnt happening. i dont know why now







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    Re: Why are my speakers distorting?

    try grounding the rcas




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    Re: Why are my speakers distorting?

    What he means is grounding one of the RCA shields.

    Maybe one of the RCA's are bad, it happens. Use a DMM to measure resistance between center pin and shield on each one. A short is bad.



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    Re: Why are my speakers distorting?

    Pic of your amp install would be helpful



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    Re: Why are my speakers distorting?

    how do you hear distortion at 0 volume?




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    Re: Why are my speakers distorting?

    Pioneer head unit???



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    Re: Why are my speakers distorting?

    Quote Originally Posted by thevic24 View Post
    Pioneer head unit???
    Fukcing pioneers.




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    Re: Why are my speakers distorting?

    Quote Originally Posted by Bassin Buick View Post
    Fukcing pioneers.
    I know, I know...they sound and preform great except for them **** picco fuses!!

    I have a few here with this issue....



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    Re: Why are my speakers distorting?

    yeah exactly actuallly. i do own a pioneer headunit. would this be a potential problem? its a mvt 8200.
    and i turned the gains down from about 7/10, to half and the distortion cleared so im assuming its with the amp. the rcas had no issues.




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    Re: Why are my speakers distorting?

    Quote Originally Posted by keep_hope_alive View Post
    What he means is grounding one of the RCA shields.

    Maybe one of the RCA's are bad, it happens. Use a DMM to measure resistance between center pin and shield on each one. A short is bad.
    no he means actually grounding the rca's at the hu




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    Re: Why are my speakers distorting?

    Quote Originally Posted by Dirtrider4eva View Post
    yeah exactly actuallly. i do own a pioneer headunit. would this be a potential problem? its a mvt 8200.
    and i turned the gains down from about 7/10, to half and the distortion cleared so im assuming its with the amp. the rcas had no issues.
    How did you set your gain the first time?



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    Re: Why are my speakers distorting?

    Do you mean lots of static at 0 volume? Turn your gains down to a good balance.




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    Re: Why are my speakers distorting?

    Quote Originally Posted by Ville Audio J View Post
    no he means actually grounding the rca's at the hu
    if you say "Ground the RCA" it doesn't tell someone what to do. ground what? the center pin??? that would be a bad idea.

    that's why I clarified how to do it. the purpose of grounding the shield on one RCA is to verify if something inside the deck (ahem, Pioneer) has failed resulting in noise due to a lack of continuity to reference ground. Really, it's just a Pioneer fix because of their silly diode. And since all RCA shields are internally tied to signal ground (not always chassis ground, and does not apply to balanced two-wire systems) then you only need to do one shield.

    in the future, don't say "ground the RCA" since it isn't telling the whole story and someone could damage their gear trying it improperly. instead, provide proper advice by suggesting they "ground the shield of one RCA at the head unit). details are important when giving advice.



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    Re: Why are my speakers distorting?

    Quote Originally Posted by keep_hope_alive View Post
    if you say "Ground the RCA" it doesn't tell someone what to do. ground what? the center pin??? that would be a bad idea.



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    Re: Why are my speakers distorting?

    Quote Originally Posted by Dirtrider4eva View Post
    yeah exactly actuallly. i do own a pioneer headunit. would this be a potential problem? its a mvt 8200.
    and i turned the gains down from about 7/10, to half and the distortion cleared so im assuming its with the amp. the rcas had no issues.
    Sounds like you need a tuning lesson.



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