I recenty had 2 subwoofers and 1 amp installed. The installers bridged them to get 550 watts a piece to get the full 1100 watts from my amp. At first there was a 30 amp fuse. It blew then they aded a 50 amp fuse it also blew then I installed a 60 amp circiut breaker then my amps two 40 amp fuses blew. Please help me. What can I do.