Alex, with regard to the amount of intrusion into the living space, the Ws don't really have a major advantage. They do protrude about 3.6" and have bigger height and width dimensions than the QSs, which have just slightly more depth at 6". It really seems that if anything the QSs would be less obtrusive than the Ws if mounted similarly(preferably slightly higher).

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Enjoy the music, not the equipment.