Thank you all for your responses. I've never really understood about bass/volume distortion and still wonder what factors contributed legitimately to the resulting recording. Someone mentioned echos using omis, I can understand that (didn't cross my mind at the time).
As for the lineage, it was the shown mics and preamp (0 gain, bass filter on) > JB3 (line-in). I do not know the model numbers of the mics and preamp. When I had e-mailed Chis about getting mics and preamp a year or so ago, we talked about different things and I'm not sure what I ended up with.
Please let me note that I have made a nice sounding recording since this recording in discussion with these mics and preamp. However, it was in a small bar and the bass was not too bad. It was very loud though, as I was right up front. Loud enough to distort my camcorder audio notably, but no distortion that I can tell from the mics on the JB3 recording.