To answer Glenn's question:
I also play bass in a rock-a-billy band and the mixture of my Barbettas works in any venue for P. A., bass or keyboard amps. The sound on all my Barbetta speakers’ 31’s, 32’s and 41 is excellent but they each have their own special sound but for PA vocal I prefer the 31's.
Hank
I recently bought a Barbetta 31c based on some input from a couple of forum members. I'm very happy with the 31c. I started out with a Roland KC150,I didn't like what I heard, then went to Logitech z5300s which I was happy with. Then I got a good price on a slightly used pair of z5500s and love those. I needed something easier to setup than the z5500s for the 1 hour gigs. I bought a single Mackie SRM450, but not what I wanted, plus a little too heavy for those 1 hour gigs. Now the Barbetta 31c. I like what I hear coming from that box! I use a PSR 3000 I'm with Hank I can't hear what others talk about about with stereo phase cancellation.