Couple of questions:

Why are you set on using bookshelves for surround purposes?

Can you go into more detail of what "partially into the wall" means? Anytime you enclose a speaker performance can be comprimised.

The m3's and m22's have a rear bass port which is required to allow low frequencies filter into the room, enclosing the speaker would comprimise the purpose of the design.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
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