After Market Eclipse Headunit Buzzes Through Factory Amp

[davej]

Ran the Eclipse RCAs to the factory amp. Works but I am getting a constant buzz when the unit is powered on. If I bypass the amp and go direct to the speakers, works fine. Any solution for the buzz?

Thanks...Dave

[davej]

I just wanted to post that I figured this out. I added ground loopback isolators to the RCA connection between the headunit and factory amp. FL-GL400 @ circuit city

[sovietlexus]

wait a minute......i have the same exact problem, can u explain what u did more thoughroughly..??

[davej]

wait a minute......i have the same exact problem, can u explain what u did more thoughroughly..??

Installing a Eclipse CD4000 unit. I am using the factory speakers and amp. I have a harness from metraonline.com. The harness plugs into the factory harness (that the radio used to) and accepts the RCA inputs from the headunit. Once I plugged the headunit into the RCA of the the harness, everything worked. However, the buzzing started once I powered on the headunit. To troubleshoot, I disconnected the RCAs from the headunit and just ran speaker wire/speaker to one of the speaker wire sets on the headunit. The buzz was gone so I knew the amp caused it. Called Metraonline and inquired and they suggested the RCA groundloop isolators. The isolators get connected inbetween the headunit and the metra harness. This help?

[sovietlexus]

alright, so u ran speaker wires from where the amp is to bypass it all the way to the headunit?

[sovietlexus]

alright i got it thanks....

[davej]

I want you to understand that I AM using the factory amp and speakers. I DID NOT bypass them.