Multi-purpose Music/Home Theater/Recording Studio

[goodwater]

No, it's the space above the two storage that I'm going to fill with Rockwool for using as bass traps.

The soffits are filled with wool but closed with 5/8 drywall to soundproof the air ducts.

Stef

[gullfo]

if you use a silencer on the wall penetrations for the supply and return, you don't need to soundproof the ducts. and if they're flex duct, even better. the soffits (if they were soft) would absorb a lot, and adding some hard plates etc along the sides and/or bottom to keep things from being completely flat, you would get a really good benefit...

even hard ducts, fully damped, would be ok. the key for the air system is low velocity and low noise vents. silencers for penetration between spaces to attenuate inter-room sound transfers.