In my experience 12" subs move that much more air and work much better for HT due to the larger driver size. I have found just about any driver size will work for most music, extreme low pipe organ music withstanding. I would stick with the 12" driver versions for future proofing due to possible larger rooms.


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