All you need is 1 good sub and it can be placed out of the way with a long interconnect. That is the best way if you want to augment the bottom end which it does not have. Remember bass notes are not directional. I hope I said that correct. I have 2 Dali Suite 1.2 subs 12" acoustic suspension types that I used with my Cornwalls. Well to be honest the Cornwalls didn't need the subs but one day I left them on and the Classical kettle drums shook the room. I enjoyed that extra bottom end. So especially when I listened to Classical I left the subs on.
