I'm thinking about picking up a pair of M22 In-Walls.

I was hoping to hear from owners of Axiom In-Walls specifically in regards to what the sound is like in a room (bedroom) that is on the other side of the wall they are installed in.

Is it possible to add any type of soundproofing material during installation or do the In-Wall speakers rely on the wall cavity (since they don't have an enclosure)?

Thanks in advance for your time.