In anticipation of my next project, I finally got around to building a test box for the 2123J's Bo was so kind to broker me. No beating me up on the quility of the test unit, it was an hour and a half on the table saw and all scrap wood, and left over fglass. I want to drag all the stuff outside on the week-end and fire it all up. Hopefully these sound as good as I've read. I think I know now what the "B" in b stock means, I'll see if anyone else catches it.