Rocky,

If you add a sub, get one with a 10-inch driver (EP175). That room is a little large to use a sub with an 8-inch driver. You may find the M22s or M3s produce ample bass without a sub, unless you want to crank things up a bit, and I suspect that might be the case if there's a pool table in the room. Party on.....

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)