Audio Whine in 2nd amp only

[aschoen]

I recently installed a second amp (US accoustics) in my car to power my front speakers. Before I did this I had a Kenwood amp running all channels with no whine.

I'm using the stock head unit and my high level speaker inputs are not near my power cables. The new amp doesn't use all 4 speaker wires (for the 2 front channels), only the +'s, then it has a ground that is supposed to connect to the head chasis (which is how I have it connected). I believe this is part, if not all of the problem.

Anyone have any advice on how to get rid of the prob? Can I just connect the single ground high level input wire to my speaker -'s ? (like a normal amp should have?)

Thx in advance,
Anton

 

[b_real45]

How/where are your RCA cables from that amp running? If they are running anywhere near the power wires it'll cause noise. The noise is usually a whine and goes higher in pitch as your rpms increase.

 

[1sty]

I recently installed a second amp (US accoustics) in my car to power my front speakers. Before I did this I had a Kenwood amp running all channels with no whine.

I'm using the stock head unit and my high level speaker inputs are not near my power cables. The new amp doesn't use all 4 speaker wires (for the 2 front channels), only the +'s, then it has a ground that is supposed to connect to the head chasis (which is how I have it connected). I believe this is part, if not all of the problem.

Anyone have any advice on how to get rid of the prob? Can I just connect the single ground high level input wire to my speaker -'s ? (like a normal amp should have?)

Thx in advance,
Anton

WARNING
I wrote this before readin the manual. I have posted a correction lower down on the page.

Simply put you have it connected very wrong!

ANY amp speaker level inputs require all the (+)s and (-)s to be connected. Ground is not the same as (-) they are very different.

You need to use the front right positive and negative and the front left positive and negative. Only using the (+) and then grounding the (-) is making the system a common grounded one which is:
1. a ancient form of audio system
2. NOT WHAT YOU HAVE, you could damage something.


You need to hook this amp correctly immediatly or pay a professional to do so.

Can you get me the model number and If I can find the manual I can give you a diagram.

 

[b_real45]

How/where are your RCA cables from that amp running? If they are running anywhere near the power wires it'll cause noise. The noise is usually a whine and goes higher in pitch as your rpms increase.

Rofl.. I obviously did not read his whole post clearly. I'm ashamed.. not because I didn't read the whole post.. but it's only taken me 6 beers to be that retarded.

 

[1sty]

I didn't want to point that out

Would you like me to delete it or make it seem more intelligent?

 

[b_real45]

lol nah.. i'd leave it as a constant reminder to myself to not drinnk and post.. its dangerous

 

[1sty]

:wtf:
I finaly got the manual and it appears you connected the amp correctly according to the manual. I can't believe that it is connected like that. I can only imagine the amount of noise that can induce.
If thats not the cause then you probably have a grounding issue.

 

[aschoen]

Thanks for the help, I guess I gotta dig deeper into this.

Thanks everyone for your help.

Anton