"Bob Olhsson" wrote in message ...
"Scott Dorsey" wrote in message
...
...The only real solution is an isolated room in which the floor is
detached
from the frame, and floated on springs and rubber doughnuts. This is very
effective, but also very expensive. It's pretty much the only way to get
good isolation in a commercial skyscraper, though.

And then you've created the additional problem of having a small room that
totally contains most of the low frequencies which means you are going to
lose a huge amount of floor space to trapping and other low frequency
absorption in order to make it sound as good as a normal, non-isolated room.


Not sure I understand what you're saying here, Bob. Are you suggesting
that the room *would have* been large enough for evenly distributed
room modes (and hence, resonable low frequency response), but now that
all floating floors, double walls, & bass traps are installed it's too
small? That doesn't jibe with the architectural designs I've seen.
Even with a completely floating floor (poured concrete on springs, w/
1-2" airspace underneath) & staggered-stud double walls afixed to that
floor, you've given up at worst 12" in each dimension (maybe more in
height, depending on trap design). And a 14' x 20' x 8' room is not
going to exhibit appreciably worse low frequency response than a 15' x
21' x 9' room. (Sure, I'd rather have the extra space for gear,
people, & furniture...but not if it would cost me my lease!)

A location where you don't need to sweat low frequency isolation will ALWAYS
save you a fortune!

Now that I understand! Nothing like your own building (he says
wistfully...)