I know I didn't like having only one sub. I know in theory that sound below a certain frequency is omnidirectional, but then it's never hard to tell what direction thunder comes from, so I'd say for stereo, two subs makes good sense. Myself, I decided to go back to no sub with my Tannoy System 12 DMTs. Yeah, the bass is a bit "lighter", but overall the music is clearer, more dynamic and with better separation between instruments. Regards, Joel.