Studio Construction

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iownrocknroll

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Part of my 5 year plans is to start construction of a studio...

I am curious to find out everyones thoughts on a studio based around a concrete cinder block frame and concrete slab floor as my studio shell?

So forget room size for now....say something with 20 foot high ceiling concrete floor and concrete block walls....the inside of course would be double wall, offset studs with air gap. fake hardwood floor.
Plumping run through the concrete floor, elecrtical, ethernet, tele-com, and studio wiring through second wall.

Would all concrete be a good shell to build with?
 
20' ceilings, damn, must be nice! Concrete block would be great for isolation, lotsa mass. That would be my plan if I could make my own building... Other than that, since you're framing and double walling the interior, I don't see what difference the exterior would make.
 
he's a super creep! he's super creepy....I could resist.

thanks man.
 
iownrocknroll said:
Part of my 5 year plans is to start construction of a studio...

I am curious to find out everyones thoughts on a studio based around a concrete cinder block frame and concrete slab floor as my studio shell?

So forget room size for now....say something with 20 foot high ceiling concrete floor and concrete block walls....the inside of course would be double wall, offset studs with air gap. fake hardwood floor.
Plumping run through the concrete floor, elecrtical, ethernet, tele-com, and studio wiring through second wall.

Would all concrete be a good shell to build with?
Click to expand...

Yep, that would make a great shell. Add the extra stud wall layers you have planned and you should have yourself a decently soundproofed room. That's going to work against you from a treatment standpoint though, so plan for it. The higher the STC rating of the surfaces the less low end will be released from the room, and the more seriously the modal issues will be.

Frank
 
Can you explain to me what you mean by modal issues?

I assumed the sound would be resonating from the drywall and not the concrete.
 
iownrocknroll said:
Can you explain to me what you mean by modal issues?
Click to expand...

Room modes...the buildup of standing waves as low frequencies reflect off of hard surfaces and combine additively or subtractively. The first mode is always the most energy intense, then the mode at every octave thereafter loses some. Example: a 10' length would produce a primary mode at 56.5Hz, then another at 113Hz, 226Hz, 452Hz and so on. And that only takes into account a single surface and a simple reflection.

iownrocknroll said:
I assumed the sound would be resonating from the drywall and not the concrete.
Click to expand...

No...the lower the frequency the more mass it takes to stop it, so at a particular frequency the energy will pass right through the sheet rock and be reflected by the concrete surface underneath, then it'll pass back through the sheet rock and back into the room. Sure, along some bandwidth the sheet rock will serve to "absorb" some energy both ways, but that only goes so far.

Frank
 
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