The rooms which have M3c's are rooms where we do not want any speakers showing. Aesthetics are paramount. So no bookshelves, on-walls or QSs ... The main purpose of the M3c's is to play the news, background music, and occasionally to fill the room for a party or just because we want to turn it up.

First I'd like to know how close an M3c is to an M3 bookshelf. So, before moving too far, one experiment I should try listening to an M3 bookshelf though a high pass filter with 70hz at -3 and -6db and see if either sounds close. Then the next step will be clearer.

Not the top project on my list ... but I'll probably try and sneak it in ...