Anyone help with this, My set-up is >> Pioneer VSX-D1011 reciever Mission 74i front, 72i rear, M7C2 Center & MS10 Subwoofer. My MS10 subwoofer has recently been sent back to Leading Edge and Mission because all the front end components fried? Not sure why as I havent really put it through its paces, although it never gets switched off physically. My question is, for some reason when I power off my Amp or switch between inputs I get a load boom from the Subwoofer. None of my mates setup's do this. Is this possibly a fault with the Subwoofer and hence why it finally blew or is it likely to be the amp or even something I done wrong? Its very load when it does it. I'm a newbie, but would like to think I started with a fairly good system. I read a few different reviews which seemed to favour mission speakers with Pioneer amps. They apparently compliment each other well? Any idea's??? Thanks in advance (",) ps - only had the Sub for 3 months before it blew, should get it back next week?