speaker cut off

My driver front speaker would occasionally kick out when the weather got hot, so I decided to replace the front and back speakers before that happened this year. I replaced them with some decent Infinity 6.5s. The backs are great, but now both front speakers with make a pop sound and then...

I found my way to these boards out of desperation, but I'm hoping to stay since it seems rather neat. In any case, I installed my new sound system into my truck a little over a week ago, and it was running great until two days ago. I just turned the truck on, and I noticed if I turned up the...