Have a Planet Audio TT1250D. I used to run two 10's, with this amp and it hit pretty hard. But because I drive a jeep tj, i had to take out the back seats to fit em. So i decided to sell them and buy my buddies MTX 5510, which he gave me for 40 bucks CAD. I bought a .75 cubic ft sealed box that fit in my trunk (to spec) to put it in because I listen to mostly rock now and i dont need heavy bass. I removed my old set up, completely other then the wiring and put my back seat in. I plugged in everything again and now my amp does not put out any power from the speaker outs. The power light comes on, protection DOES NOT come on, I tried a lot of things. I tested the sub on my home audio setup to see if it was blown or not, it wasnt, and worked fine. I tried swapping out the inputs from the deck for those of an ipod, no luck. I have no idea wtf is going on. Everything turns on as normal, just no output from the sub. I also fooled around with the settings on the deck and on the amp to no avail. Anyone have a similar expierience that can offer incite as to what is going on?