Structural noise and soffits?

The studio I'm constructing in our new apartment home right now (using room within a room design) has a problem in design that I need to ask you guys about. There are lots of soffits in this room. See photos of it here: http://www.johnlsayers.com/phpBB2/viewt ... highlight= The 2nd leaf walls/ceiling will be made flush with the soffits, but it occured to me that even though I'll be adding anti-vibration pads to the 2nd leaves so that they are free from structural vibration noise, the soffit themselves are "exposed" to the room and are connected to the structure. What do I do about these soffits? Will adding anti-vibration padding between the 2nd leaf and the soffits be enough (the black thick line in the image), or if the soffits are exposed anyway, there's no point in trying to do any kind of anti-vibration for structural noise?

I see what you mean... and imho you should not leave those soffit ends exposed to the interior of your studio. I guesse there are two ways to go about solving your problem. One would be to not flush mount your new wall but instead build it along the outskirts of the soffits (with the new wall being perpendicular to the soffits). Another idea would be to "soffit the soffits" ??? (what?) Enclose the soffit parts as you would with the other parts of your wall. Probably covering it with drywall. I guess the latter would require some more work than the prior. Also... the first idea might bring with it, it's own very unique set of problems since you will be left with a "chamber" behind the wall (and in between soffits). Just some ideas... /Gash