Have had the pleasure of visiting Zilchlab, And got to hear the very first few pairs of Econowaves. I remember those beat up cabinets, And Zilch having a pair set up, And asking me to have a seat in the sweet spot. The sonic wonder of those first test pairs were jaw dropping, Even then. At his request, I supplied my Hpm 100's for woofer testing, And he was kind enough to walk me through the whole process, Even recapping the crossovers. The point is, He was a good man, Who as we know, Loved to dig for knowledge and share it. He will be missed, But it's good to know his legacy is all over this great website.