This gives me a good reason to upgrade to another set of Pi's for more efficiency! Really though, I finally got a chance to listen to the 12B4 for several hours today and it did really well with everything except speed metal, and then only ran out of gas and sounded poor when I ran it louder than I usually listen at. It reproduced guitar, vocals, and instruments very well on everything from classical to jazz to blues. Really did everything I had very much to my satisfaction. It reproduced the bass every bit as well as my 50watt NAD amp at my usual listening levels. Everything I remember when I heard it at GPAF on the Pi Towers. I am really glad I went ahead and bought this from Jef.

I saw where Parts Express had their Dayton sub kit on sale for $260 or so. Not a bad price.