No expert or anything, but I'm sure when I was looking into this for my bathroom a while back you get little pot things to go over the backs to help project sound down.
Idk if that's the same for all, or if there is some sort of design aspect to it depending on the speaker/other factors.
Personally I'd be tempted to make mdf cabinets to go over then put sound proofing/ deading material around the outside of the box.
No expert or anything, but I'm sure when I was looking into this for my bathroom a while back you get little pot things to go over the backs to help project sound down.
Idk if that's the same for all, or if there is some sort of design aspect to it depending on the speaker/other factors.
Personally I'd be tempted to make mdf cabinets to go over then put sound proofing/ deading material around the outside of the box.