I have a sony p5 amp about 400w x 1 to an older kicker comp which is about 300w rms. A few days ago during my lunch break as i was driving down the road, my sub suddenly stopped hitting. When i got back to work i checked amp, and it still had power and the fuses were good. I checked the wires to the amp and then from the amp to the box, and from the back of the box to the back of the sub. I didnt hear any cracking and didnt smell anything but the amp has power and the wiring is good so why would it stop playing all of the sudden if it wasnt blown? I then put in one of my friends newer version kicker comp's and they did the same thing within about an hour of play time. Is it a wiring problem? Thanks in advance for you help.