i was just getting to that..... i saw right away that you have 1 too many wires on each sub. esentially, one of the jumpers is just shorting the speaker wires. should be = from the amp to = of one coil, and - to the other coil with a jumper between the 2 unused posts on that sub. gives you a 4 ohm load, and you repeat with the other sub. for .5ohm, you put all the + and all the - together, but never cross. i can tell you that you shorted at least one output fet. if you put an ohm meter on the transistor legs, you will likely read short on the outters on all of them (normally you shouldn't) and you can find the blown one because the center leg will be shrted, most likely. however, with it blowing fuses and not turned on, the shorted outputs also shorted the power supply fets, so that is blown, too. i would send it back, and try not to let it show signs that you opened it at all. tell them you wired it up at 2ohms total load (4ohms each sub, with the coils in series) likely they will just warrenty it no problem, if not, you know what needs to get fixed
