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Rear channel on 4 channel causes noise in all channels


4.6DreameR

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Posted

Amp: Refubished T400-4 about 2 years old now.

When I pulg in the rear channel RCAs the amp causes a terrible squealing noise in all 4 speakers. Even when the amps switch is on 2 channel and the RCAs are plugged in the noise happens. When they are not plugged in, no noise.

Is this something I could fix with my limited knowledge of amps? Or should I just start looking for a new 4 channel?

"In the 21st century, information is power, to where any human being can learn how to do anything with the touch of a button. With that the most powerful thing a person can do is share ideas and information." -L

Posted

You know i had this same problem.. for me it would only squeal for a little while and sometimes it would and sometimes it wouldn't. Once i upgraded alternators it never made that noise again. That could be it, it could not be it just throwing out an idea.

Posted

try new rca's out.

plug Front rca's from the headunit into the Rear on the amp. see if noise persists.

Posted

Have you tried new rca's?

Some people with RF amps had issues if there mounted to metal also.

Have another amp you can test the connection with? Could be a ground loop issue.

Some Pioneer H/u's have pico fuse problems which can cause squeal/alt whine etc.

How is everything currently set up? Any pics?

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Posted

Thanks for the quick replys!

All RF wiring (4g to distribution blocks, 8g to amp) Pioneer 3200bt HU.

I just went out an swapped RCA's around and its fine now! THANK YOU SO MUCH! I was about to buy another amp if I couldn't figure out this problem.

My rear channel RCA's must be grounding somewhere or are just bad.

"In the 21st century, information is power, to where any human being can learn how to do anything with the touch of a button. With that the most powerful thing a person can do is share ideas and information." -L

Posted

glad we could've helped. usually its the simplest shit lol

Posted

damn. threads like this should be stickied under "this is what happens when you listen to good advice instead of ignoring it, writing it off with "i know that isnt the problem", or crying about something."

op got correct advice, listened, tested it, fixed it in 1 hour of asking the question. like it should be.

If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood.

Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s.

http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/

Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build

Yeah. im pretty sure they dont warranty retarded people.

Posted

I couldn't believe how simple it was to fix this. Thanks again.

Also read my sig, it applys here.

I will post pictures eventually once I have everything done.

"In the 21st century, information is power, to where any human being can learn how to do anything with the touch of a button. With that the most powerful thing a person can do is share ideas and information." -L

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