03 with Rockford Fosgate system head unit replacement - weird sounds

[idratherberidin]

Very good! Is your X a SC? Even with GLI on mine I could still hear the supercharger through my speakers. Glad you got it fixed and didn't have to do what I did!

[LuvMyDux]

I also have the Rockford system and tried installing a new DVD head unit today. I'm also having terrible hissing and interference noises coming through my speakers. In addition, I am hearing this fan like sound coming from under my X, have no idea what's going on? I connected and matched everything correctly on the harness to the deck. How do you connect this Ground Loop Isolator thing? I uninstalled everything and put back the factory deck cuz the noise was so bad.

[Delirious]

Originally Posted by rjr162

If its popping when the system first turns on, and also maybe when it turns off (but not in between) then its most likely a timing issue. You can get turn on delay modules online for under $20, and what they do is delay the amp turning on a bit so the audio signal is already on. The pop usually happens when the amp is already on and *then* the audio feed kicks on

Sent from my GT-I9000 using AutoGuide App

1kohm resitor on the amp turn on wire USUALLY fixes "turn on pop" on factory amps

[rjr162]

Originally Posted by Delirious

1kohm resitor on the amp turn on wire USUALLY fixes "turn on pop" on factory amps

Absolutely can help, and is pretty much required on certain Fords (such as the JBL equipped Explorers)

[Delirious]

also finds most nissans dont ground through the harness and gets their grounds in the ISO mounting brackets. most installed head units are only being grounded through the antenna (specially when using a plastic dash mounting kit)...not a good ground. run the HU`s ground dirrectly to a metal brace inside the dash cavity and usually all those popping, pulsing, altinator wine, etc noises will go away.