well if he has already stated that he does not have the 460...he has already stated the radio works, just not the front speakers. nothing about his description of probs says check blown fuses, lol. he doesnt have the mach 460 amps, and im sure he has checked his radio fuse when he said he checked fuses. and usually a blown radio fuse would mean nothing would work. not just certain speaker, lol.
i'm almost sure he wired in 2 kicker door speakers and did'nt assure a good connection. either behind the deck or in the door. bet ya it's not a blown fuse, lol.