Art,
Over the years, I've used a number of different JBL loaded custom cabinets (8's, 10's, 12's, 15's, and 18's), a SWR 2x10 + 2x10 + 1x18 system run bi-amped in stereo, and now these PJB cabs. There is NO comparison! The cone area of these cabinets is the equivalent of a 2x10 plus 4x10, but with the drive/control capacity of 24 drivers. WAY better control of the low end with incredible mid and high end clarity - the perfect compliment for my new Alembic!
I'm using a Crest Audio LT 1000 bridged to drive them (6ohm load). Plenty of power for the church where I usually play.
Thanks,
Loch