rca's and speaker wire...
Honda-Tech Member
Joined: Jan 2002
Posts: 5,143
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From: Beavertown, OR
Re: rca's and speaker wire... (bassisliffe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bassisliffe »</TD></TR><TR><TD CLASS="quote">i got rid of my engine noise by grounding the battery to the chassis with 2awg wire 
can anyone explain this!? it happened by accident, i thought my hu was shot as i couldnt get rid oof it, i had a 2awg equipment ground wire and just decided to try it on the battery to chasis
i was driving and realised all engine noise was gone, wow!</TD></TR></TABLE>
It's called a ground loop. When you do not have a sufficient ground the amplifier will try to pull the ground from the RCA's. So you end up with extra current in the RCA's. So now the RCA's are carrying the analog signal along with the current for the amplifier. IMO 95% of noise in a car comes from this.
Radio shack RCA's will work fine as well as running all the wires together. I have never picked up "induced" noise from power or speaker wires.
If you have noise check your grounds. Makes sure you have good grounds. Check the stereo ground, amplifier ground, and the battery ground.
What a ground loop isolator does is it creates a floating ground so there is not a direct path to ground for current to flow. This to me is a band aid because you have not fixed the poor ground.
can anyone explain this!? it happened by accident, i thought my hu was shot as i couldnt get rid oof it, i had a 2awg equipment ground wire and just decided to try it on the battery to chasis
i was driving and realised all engine noise was gone, wow!</TD></TR></TABLE>
It's called a ground loop. When you do not have a sufficient ground the amplifier will try to pull the ground from the RCA's. So you end up with extra current in the RCA's. So now the RCA's are carrying the analog signal along with the current for the amplifier. IMO 95% of noise in a car comes from this.
Radio shack RCA's will work fine as well as running all the wires together. I have never picked up "induced" noise from power or speaker wires.
If you have noise check your grounds. Makes sure you have good grounds. Check the stereo ground, amplifier ground, and the battery ground.
What a ground loop isolator does is it creates a floating ground so there is not a direct path to ground for current to flow. This to me is a band aid because you have not fixed the poor ground.
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Jul 29, 2002 06:47 PM
