I recently purchased the Pro Media 2.1 THx certified speaker set. After about 4 weeks of use the fuse in the subwoofer blew. I purchased some more fuses and everytime I power up the subwoofer it blows the fuse. Sounds like it might be the amplifier but I'm not sure. Anyone have any ideas. I've only had it a little over a month, so the warranty is good. I just hate to part with it while it gets repaired. Any ideas or suggestions?