newly developed start up noise

[Ben5]

I have a newly developed start up noise. When I start my car, I now have a second of static-like noise coming from my speakers. I have not changed anything. My question is about a turn on relay.

I have only the turn on lead from my head unit wired to my four.1 and both of my amplifiers. I thought that it would be alright just being 3 devices.

With that being said, would a relay relieve my new start-up noise?

Thanks in advance SMD'ers!

Now I will hang up and listen...

[Skullz]

Double check all grounds and make sure nothing is loose and moving.

Use some rca patch cords direct from the H/U to the amp not installed in the vehicle and see if it disappears.

In the event you have a pioneer H/U ground your rca's and see if that helps.

If the amp is mounted to the car chassis you might want to use something else to mount to instead of metal body.

Possible amp issue but you'll need to try all the other things first, if you have a spare amp to try out then that is a good option.