Two subs or not two subs...

I use 2 REL subs, a Q150e and a Q108MKII, and they were inexpensive and sound excellent. The more the merrier as far as subs go, but 2 are plenty for my tastes. Note that the clear "position" of the bass player in a jazz group is determined by the "aural cues" of the higher frequency notes and overtones of a bass, not the sub frequency tone which is absolutely non directional.

The bad news about my particular RELs is that REL informed me that they don't service that model anymore, so if one stops working I'd have to fish around for a repair...oh well...the good news is they currently work perfectly.