Speakers crackling help..

[flex229]

i know this is my first post...im new to this,,,need you guys' expert opinions.

I have an aftermarket older Pioneer head unit on my 2002 Isuzu Rodeo. Unit is dehp2009p, i believe...its from about '07...a little older..

I had to bypass the factory amp (blew out) and put in the following equipment:

I had my guy install 2 6-in. speakers in the front doors (Sony), 2 six-in. speakers in the back doors(Sony), 2 4-in. speakers in the rear area(Pioneer), and 2 1-in. tweeters in front doors (Kenwood.) Also had a 600 W amp (Sony)installed.

My problem: whenever I change my equalizer settings on my head unit by pushing the "audio" button, I hear a crackling/rather loud static-like sound in my left front speakers. (could be crackling in all speakers, but the ones nearest the drivers seat are the ones that i notice for obvious reasons).

What could be causing this? The guys who installed my equipment were a little baffled.

I believe my guys said they kept factory wiring...

thanks....

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[lionfamlee Premium Member]

Do you here engine whine? Or is it actual a crackling sound? Are your speakers hooked up to the Sony amp or some of them hooked up to the head unit? Its hard to diagnose without more info. I can tell you this...Pioneer makes some awesome head units, but they are notorious for RCA ground looping noises. I always recommend that people ground the rca to the head unit. You can do this by wiring it or soldering a point to connect them to the head unit. But before we look anymore into this try to answer the questions I left before.