RCA Noise

[dkmesa 10+ year member]

My speakers have been squeeling ever since I installed them. I pulled my HU to check the RCAs and sure enough, when I push on them the squeeling got noticeably worse. I grounded both ends of the RCAs and the squeel no longer worsens when I touch the wires but the squeel is still there. Does this just mean my RCAs are bad, that I need some new ones. I bought them last year, installed them, but just now hooked them up to an amp...they are MA Audio. They appear well insulated with nice connectors.

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[J31Rob 5,000+ posts]

Your power & RCA's by each other? If so.. your power is interfering.

Either that or it's a ground loop.

 

[dkmesa 10+ year member]

No, I thought that was the problem, so I moved the power and RCAs to opposite sides of the car.

What is a ground loop? Are you suggesting that my ground isn't strong enough?

 

[dkmesa 10+ year member]

up

 

[TreyE 10+ year member]

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search engine noise

 

[dkmesa 10+ year member]

I am really stumped. Is this a problem consistent with bad RCAs? It sounds like it is only doing it with the front left speaker, whereas there was interference with all speakers before grounding the RCAs. Could I have interference in the speaker wire?

 

[CaliforniabOY5 10+ year member]

I will fix it for you if you ship me your Merlin to 92707. . pm me

lol jk. . . well the obvious thing is to make sure the ground is solid but what you can also do is try to ground your RCA's, yes your RCA's, get speaker wire from the amplifier side and run them exposed around your RCA;s and ground them somewhere, maybe even join it to where your amp's ground is. . . ive heard of that working.

 

[dkmesa 10+ year member]

I will fix it for you if you ship me your Merlin to 92707. . pm me



lol jk. . . well the obvious thing is to make sure the ground is solid but what you can also do is try to ground your RCA's, yes your RCA's, get speaker wire from the amplifier side and run them exposed around your RCA;s and ground them somewhere, maybe even join it to where your amp's ground is. . . ive heard of that working.

I've already grounded the RCAs and switched from 8 ga amp ground to 4 ga...nothing

 

[TreyE 10+ year member]

I've already grounded the RCAs and switched from 8 ga amp ground to 4 ga...nothing

take speaker wire...wrap it aroung BOTH RCA's of the speakers that have engine noise...then groung it to your head unit via an existing screw in the back you unscrew and put the wire under then screw back down trust me it will work...if it doesnt you have a bigger problem on your hands:crap:

 

[helotaxi 5,000+ posts]

Your power & RCA's by each other? If so.. your power is interfering.
Either that or it's a ground loop.

Once more for the comprehension deficient...

Running your RCAs next to your power wire will NOT cause noise. Myth. Plain and simple.

 

[CaliforniabOY5 10+ year member]

**** it, call it a day a buy yourself a ground loop isolator. . . it'll "fix" the problem

 

[dkmesa 10+ year member]

take speaker wire...wrap it aroung BOTH RCA's of the speakers that have engine noise...then groung it to your head unit via an existing screw in the back you unscrew and put the wire under then screw back down trust me it will work...if it doesnt you have a bigger problem on your hands:crap:

Thanks, I am pretty sure engine noise is my problem. But I have already grounded the RCAs to the chassis...it will fix it if I ground it to the HU rather than the car? Thanks for the tip

 

[TreyE 10+ year member]

Thanks, I am pretty sure engine noise is my problem. But I have already grounded the RCAs to the chassis...it will fix it if I ground it to the HU rather than the car? Thanks for the tip

yea you cant ground to your car idk why but i figured it out...watch when ur HU is out take the wire you grounded to the car then touch it to the back of your HU and it will go away if you turn it on its like night and day

 

[Bloodstalker999 10+ year member]

Once more for the comprehension deficient...
Running your RCAs next to your power wire will NOT cause noise. Myth. Plain and simple.

I don't know how you can say this... Its called cross talk and Here is an Article on it.

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[n2audio 5,000+ posts]

I don't know how you can say this... Its called cross talk and Here is an Article on it.
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because he's smart enough to recognize it doesn't apply in this situation

not to mention - he's smart enough to know which "type" of cross-talk could theoretically be an issue.