GIK Vicoustic and others

@ei001h 

"why double dry wall if you’re already using rock wool ? Where did you instal spray foam ? Why is glue important?"

I live in a quiet  neighborhood, but there are still neighbors with leave blowers, chain saws etc and the ever present AC compressors.
So I double studded the room which left enough room for spray foam (do not do this your self) and rockwool.  Then double "Quiet Rock" dry wall with green glue in the middle. Makes for rather wide window sills!

To answer your questions directly: I made the room as sound-proof as possible.
The spray foam and rock wool are admittedly overkill, but I had to have some insulation as it's an above ground room on a slab.

Order of events was: double framing then spray foam then rockwool then Quiet Rock then Green glue then quiet rock.

Green Glue may or may not be important to you...my system can easily overload the room so I'm throwing the kitchen sink at SOUND PROOFING.  Not to be confused with acoustic treatments. 

To be clear: my goal was to make the room impervious to external noise, and secondarily to music escaping.  The room is dead quiet which IMO will raise the level of any set-up you end-up with.  

You're on the right path.

Regards,
barts

@8th-note 

I agree with your sentiment...but this is not a one-size-fits-all arrangement.
This (essentially) is what we signed up for!  If the listening room doesn't require
aggressive SOUND-PROOFING then your good.

If external noise invasion is not present (it's virtually not in my case) and there's no issue with music escaping into the internal environ you are good to go and your advice should be heeded.

Regards,
barts

@ei001h 

It looks like you are getting some good advice. Just a little more on my room. There is no drywall inside the room. The walls are 2 inch rigid fiberglass ( OwensCorning) covered with fabric and 1/4 inch pegboard covered as well. 2x6 framing. Rockwool between the studs and in the ceiling.This gives you extra square footage in the ceiling and wall cavities.   Outer wall is drywall then a layer of mass loaded vinyl (excellent soundproofing ) then a thicker layer of drywall over the MLV. 

I have a dedicated room the same size and I added 12 GIK 242 panels (4 front wall, 4 back wall and a pair each side wall) which made a nice difference. I emailed with them a few times and sent them pics and REW measurements. For my budget they recommended their 242 panel so that's what I got. 

I have a pair of Aurum Cantus V7F speakers and when I play it loud then yeah it starts to overload the room a bit but I don't play them that loud ever. I tried putting the system on the long wall first then tried the short wall and that's the way it stayed. 

For ceiling Getting double 5/8 dry wall with green glue and safe and sound stuffing. 
 

what should I do with the floor ? It’s concrete now. I don’t think I can install hardwood on concrete. Thick vinyl floor ?