Aerial Acoustics 7T's

[Flyingyeff]

I've seen many comments about dual subs with the 7ts. Maybe I'm naive - but really would appreciate the help from the forum. I'm not quite sure how I set that up. My Classe ssp800 only can configure a 2.1(or 2.2 I guess) via digital processing. The sound quality is much better to me in pure analogue. Thus , I have my 2 ch setup with source xlr to Classe pre/pro xlr to my pass stereo amp (soon to be monos) and of course speaker cable to the 7ts. My other question then is - once I understand how to include the sub in analogue - can I use just one? I have a very good JL fathom f113. I understand that the low end is basically mono anyway. The sub is place opposite side of the room as the 7ts. I really would be grateful for some instruction in (somewhat) layman terms. Thanks !!