This is amazing work.
Since Pose is using two Cerwyn Vega speakers to substitute for the lackluster center speaker that came with the original Z-5500, I am wondering why he couldn't have built a 3 way speaker system - Subwoofer and two satelites. He would have gotten a better stereo split, not just for the audience, but for the performer.
There is definitely nothing to disparage about this man's workmanship.
Scott Yee is ecstatic with the sound of this system, at least for indoor use.
Pose has turned a high end amateur system into professional gear. It's amazing that you can get all of this for $300 if you're handy enough.