To achieve the FULL range of sound you need to run the M22s with a sub, that goes for pretty much any bookshelf not just M22s. The little enclosures of bookshelves just do not allow for good low frequency, 80hz and lower, representation.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70