Yep, we are fractalized. My buddy Billy Howerdel of a perfect circle hipped me to fractal a few months ago. The first time I sat down to play with one lasted 3 hours. For us there was not another viable solution out there. The sunn model 15s are augmented with 2 QSC KW181 subs. We both play bass as well as guitar, so axe-fx with FRFRF is kind of a must. Feedback is a big part of our show, plus we are believers in having some form of backline speakers to fill in the audience up close and also to just directional-ize the sound for the audience. It's just weird when the band is only coming through the FOH PA. -ken