Anyone tried one? selling point seems to be low weight and high efficiency. I think Weber, Jensen, and Celestion all have models but I really haven't heard much of anything about them.
ive heard a jensen that i thought was pretty good, clean anyway. never heard it dirty. some guy was playing some hot country with a deluxe reverb ri with the neo jensen 12" and a butterscotch tele, probably a '52 ri and the tone was nice and full. not too toppy
the old ampeg portabass 10" was great. not very efficient but the tone was great