Well, the rig performed great at the gig last night. I ran the Transit-B into the power amp in on the Quilter BB800, driving two of the Trace 2x8's. I had the Quilter about 1/3 of the way up on the master volume (the input gain is defeated when you use the power amp in), and I had plenty of volume. With everything set flat, there was not quite as much upper mids and highs for my preferences, but this is partly do to the room (which is the worst room I regularly gig in, as far as acoustics are concerned - it's normally a muddy, boom, woofy mess). Those EQ settings on the Transit-B were to account for the room, mostly. I've been running it more or less flat at practice. I was very pleased at the way this rig handled the "problem" room, and I was super impressed that four 8" drivers could handle a live gig with such ease.
Does the T-B have an SMX vibe ?