I'm a new owner of a well mechanically maintained 2002 LX470. I've been working on this thing cosmetically and making good progress. New Ridies leather installed, etc. I have a few issues with the Mark Levinson system and this forum has been awesome. The search function has treated me well. I ordered the rebuild kit for the complete system as I knew the rear doors and subwoofer weren't putting out any sound. I pulled and rebuilt the door speakers last night and it went perfect. Decent sound now. Decided to tackle the subwoofer today so I pulled everything apart expecting the foam to be deteriorated. It looks great. No sound from the sw unless I push on the cone. When I do, it is loud and distorted. Any idea what I'm dealing with here? I'm guessing a blown voice coil? Amp messed up? Any advice would be greatly appreciated! Would like to get the sub working as (everyone knows) this system has very little low end.