Before I discuss my (possibly) crazy idea, I should point out I have only a basic grasp of sound dynamics and a vague understanding of how my subwoofer does what it does. Please bear this in my as I tell my story..... Just moved into my new flat. It's very nice, thankyouverymuch. Detached house, converted into two flats, one up one down. We're upstairs, and the chap who lives downstairs seems like a nice bloke. Last night put The Two Towers on. This is the first DVD I've watched since moving in that gives the subwoofer anything meaty to do. Sounds great. We get to the Helms Deep battle and there's banging on the front door. As you've probably guessed, it's the man downstairs complaining about the noise. He's not really complaining - I explained when I moved in that I've got a surround system that can go pretty loud, could he please let me know when it's too much so I'll get an idea of the maximum volume I can go to. He says that he can't hear any normal sound - like dialogue or music, nothing like that. But the bass is making his glassware rattle. I switch the subwoofer off, watch the rest of the film at the same volume, then ask him if he heard anything after he knocked on the door. Not a peep, he says. Since this is a converted house, rather than a purpose built block, I'm guessing that it's just wooden floorboard between us and him. I havn't taken the floor up yet, but there's probably little or no insulation between my floor and his ceiling, judging by the way the bass from the sub travelled. So I think that laying some sort of insulation between the two flats (just in the lounge - let's not go mad) should sort this out. We're going to put a laminate floor down, which I know is bad for sound but the girlfriend really likes it. This should also muffle some of the bass. Then I had a genius idea. Could I put my subwoofer in the loft? The roofspace is totally open, so I could place it directly over my lounge. Then turn it up to 11 to drive the bass down through my ceiling. What I'd really like to know is would this work? And would it solve my neighbour problem? I'm not entirely sure that if I had it at a sufficient volume to sound good in the lounge, the bass would still be loud enough to rattle the guy downstair's crockery. Any suggestions? Or am I mad?