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Are you following any plans from an actual studio design or are you figuring it out all by yourself?
The reason that I ask is that I see mostly parallel walls so far.
Also, it appears that you sheetrocked the cieling and then bulit the second walls.
It appears that the headers are nailed to the cieling.
Any noise transmitted to the outer wall will easily travel up the wall into the cieling and then into the second wall.
You are spending A LOT of money and I hate to point out a flaw, but...
The double wall construction only works when the wall is COMPLETELY isolated from ANY structure except itself, the four walls of the room and a second cieling.
HERE'S THE KICKER...
The second ceiling has to be attatched to the four walls which are touching nothing.
These five surfaces cannot touch any outer structure ecept for the floted (sawn) concrete floors.
In other words, you build a building inside the building and it doesn't touch ANY part of the building.
I ued to own (now a friend owns) a studio that was built with the same plans used for Devonshire in L.A.
The guy I got the room from built Devonshire with the (Robb?) brothers.
He had the plans and bullt the room I had in Dallas back in 1975.
The plans are similar to another Holywood room from the early '60s or '50s.
I forget what room it is, but I believe that Bill Putnam had some input.
The studio, control room and iso rooms were free standing structures and only touched each other through pieces of felt surrounding the window frames between the rooms.
The only leakage was through the doubled layered glass itself.
There was almost ZERO leakage coming into or out of the studio itself.
You actually, spent enough money to do it this way, but...
You'll be isolated to a degree, but it could have been REALLY isolated!
You didn't need to sheet rock the ceiling that you did actually.
Also, when framing the walls the studs should be offset.
This causes the resonance of the sheetrock pieces to feed into a stiffer wall section straight on.
When the studs are on even centers the sections of sheetrock transmit sound like a drum's two heads.
You CAN use metal studs and with off set studs the there isn't much need for double sheetrock either.
I have built sa few of these places myself.
I've seen mistakes made OVER and OVER.
Next time get some plans.
Either that or research it a bit more first.
If I see the pic wrong then I apologize.
But I really wish you luck.
Other than the parallel walls it'll be fairly isolated.
Too bad it won't be competely isolated.
Danny Brown
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