Nothing has been upgraded or changed within the last year and a half. My dogs know to stay away from the equipment and my wife and I don't have kids yet, so that's ruled out.

I rechecked the connections to make sure everything is connected properly and there doesn't seem to be any issue.

I will try lowering the gain and increasing the trim. I currently have the sub crossed over at 80 Hz. I'll bump it up to 100 Hz and see if that helps.

Thanks for the advice as always. I know I can count on you guys for great advice!