Cant stop my alternator whine after adding extra amp...

[Cameronc]

Hello i had minor alternator whine with my system then i added another amp and BAM it is..

Pioneer deh3000ib head, 4 kenwood 4 ways amped by 2xKTX 2 way amps , jbl1000 powered by 1000 watt mono block

i had 1 ktx and 1 monoblock amp going fine then i put 2 rcas going from output on one of the ktx to the input of the other ktx to power it and then all of a sudden have whine which matches revs . iv got the stripped wire grounding rcas on the headunit , i have all grounds clean on the amp side , seperate ground going to chassi for headunit , and even ran a cable from headunit body to the amps ground but still .. whine..?

Click to read more...

 

[AlterEgo99 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/search.gif.e79a63b2b580b39b282dff402646b704.gif

 

[Phoenix Risen 10+ year member]

ground your rcas, strip a 4-5" section of wire, wrap one end around the exposed part of 1 rca and attach the other end of it to the headunit case via a screw on the case, you should be able to access a few.

 

[AlterEgo99 5,000+ posts]

I suggested search as there are some good sites out there that will walk you thru step by step to narrow down the culprit...if you don't perform the check methodically then you will be chasing your tail. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Phoenix Risen 10+ year member]

that is more often than not the culprit of alt whine, had the same issue with my 980 till i grounded the rca, i have seen that a lot and it is a pretty easy and basic thing to do, so its a good place to start.

 

[AlterEgo99 5,000+ posts]

Agreed...but if that doesn't fix it, a more systematic approach will avoid spending hours/days/weeks/months trying to figure it out.

 

[Phoenix Risen 10+ year member]

agreed,

 

[TT2ENT 10+ year member]

I recently fixed alternator whine by replacing rca patch from head unit to my amp. The sun heated up the dash and then the cheap rca got hot and the ground/shield had seperated from the terminal.

So simple and overlooked stuff always gets me.

I even thought my beloved Alpine 3555 was the culprit because it sounded like a "noisy" amp.

LMAO, I was replacing caps in it for no reason !@!

 

[Cameronc]

iv already done the grounding rcas to case thing