Which scenerio is best for Islolating the basement?

What do you think would be better between the 10" joists of the sub floor for isolation from the basement control room. OSB because it seems to be the cheapest for 3/4". (In joist) 3/4 OSB>3/4 OSB> R Batt> (joist ends) 3/4 Drywall> 3/4 Drywall Or (In joist) 3/4 OSB> 3/4 drywall >3/4 drywall > 6" 703 rigid fiberglass (joist ends) (I think that puts me 1/4" over the 8" mark, so maybe 5" of 703 or lose the osb?) The top scenerio loses headroom and the bottom has built in bass traps saving much much much needed head room. I cant afford green glue. Someone please chime in!

are you trying to beef up the mass of the upper floor and add a layer of drywall on the joists? go with all drywall.

Trying to figure out the best solution for saving head space and stopping as much sound as possible from going up stairs. If the ceiling could be bass trapped and isolated well without going past the joists that'd be ideal.

2" X 8" joists might span, if done properly a 13 foot 8 inch area from outside of wall to outside of wall. To attempt to add the additional weight you suggest is asking for trouble to begin with since this framing member will simply not support it.

if you are thinking of nesting in the mass, it will still take away head space. even though it isn't ideal to lose the additional height, you might consider RC-2 and 2x 5/8" drywall after beefing up BUT you might not support a full 4x 5/8" drywall (2 on the floor and 2 on the RC - depending on what you have - span, existing loads, live loads, etc. you might have to nest in another set of joists (although that can also be hard because of any cross-bracing/blocking you have or need with the existing joists). definitely get a structural engineer in to examine and determine what additional load you might be able to support with the existing structure. otherwise - consider electronic drums and in-the-board DI stuff for the electric instruments. mix @ reasonable levels.

I very much appreciate your response and perfectionism with it. I am a perfectionist myself and the biggest task I've struggled with is trying to find balance with reality of whatever situation I'm in. So although I very much appreciate your response and how artistic the professionals are with their sound reducing techniques. I can't afford anything. Yet I still have a burning passion. So this is my first studio and I'm trying to isolate from the first floor. I'm not going to hire an engineer etc. I have no cross bracing in the area that I am concerned with. I have nothing but floor joists. The ways I mentioned are cost effective and seem to be relevant in terms of isolation... per ritzfitzpatrick (sorry for butchering your name, as im sure i did). SO what would be the best, or an ideal alternative? Literally, what you people with greater wisdom recommend. That's what I'm doing. Wasting money or not. I still know how to bass trap and have a God given ability to create art with whatever medium so I'll be fine on the production side. I'm trying desperately to gain science's help to not waste my precious hard earned money with whatever I do. Thank you all so much! I'm not asking for help with the engineering of the house. We are fine there. I'm asking what is the best for isolation (and I guess bass trapping in one) in my first post as ritzfitzpatrick recommended in another thread and I thought it was ingenious. Thanks again!

quite frankly - i'd go with R30 in-between the joists and use RC-2 with 2x 5/8" drywall on the ceiling and single framed walls. cheap, not the best isolation but will be significantly higher than insulation or beefing alone and you only lose about 1 3/4" of space from the framing member.

kreets222 wrote:

I very much appreciate your response and perfectionism with it.!

You are making a choice. I would ask you to ask the person to whom you agree with, to spec this build out. You both will find that the 2X8 will not be sufficient.

Not be sufficient for what? Now that I think about it, I may be making a mistake... the joists are 2"x10". Either way I need to figure out the best way to isolate and save head room if possible with the cheapest possible scenario. Someone suggested for a basement studio to double up on 5/8" drywall in the joists and 703 in the joists and wrap in fabric. Ive also read lots of other scenarios but i really liked this one because the bass trapping is built in and saves the hassle of framing out basstraps in the corners etc.

could you measure the actual joists and provide detail measurements of the space - perhaps some photos so we can actually examine what the construction looks like?