i know others have had the same problem before, but i didn't read anything that fixed my problem so i wanted to ask again.

i have a 04 f150 that i added an amp and speakers to. there is a low hiss when the radio is low. i did not use loc's but i did solder the speaker wires to insure proper connection. i ran the audio wires on the opposite side as the power wires and made sure the ground was good.

have i missed anything to check?

thanks