Bad Radio Reception after Amp/Sub Install

[MoneyMan]

I recently had some work done to my stereo system. I just installed a subwoofer and an amplifier. Nothing to crazy. I thought it would be a simple install. Since the install; my radio reception went to hell. I no longer have clean/clear reception. I am not sure of what went wrong with the install. I have not taken it back to the installer, yet. Any advice would be welcomed.

How do I fix this problem?

[broknlgs24]

in my opinion, if u had someone install it for u,
u should take it to them.

[MoneyMan]

Thanks.

[x5GuyInLA]

what type of amp and what brand are you running? el_duderino had mentioned in another post that all class d amps generate some FM interference. Here's the post where he talks about it.

[el_duderino]

Yeah, I bet your sub amp is a Class D. If you change it to a class AB, you should be fine... unless someone just forgot to plug in your antenna...