I just put them there to fill in the cabinet. I originally built it to size for some old Kenwoods I was using a while back when I bough the TV. Yesterday I built some DVD storage shelves for these areas and the M3's are just collecting dust til I move them to the new room and use them for back surrounds. I was using the M22's for the mains and the M3's for a center. The M22's are now my 'center channel'.