Big John
pfm Member
I watched the video below from G R Research. The video comments on various Super-tweeter positioning with pro/con results culminating in pointing the super -tweeters straight up for use with open baffle speakers, I reasoned that my OTA Quad 57's are open baffle ie dipole, so I modified my Taket Bat Pure Super-tweeters which I had mounted in the mouths of horns & pointed them at the ceiling. I am astounded at the results; bass, mid-range treble all improved, further the ambience and space around instruments is palpable. I am really happy I can only assume some phase cancellation effect has been resolved, I noticed a further improvement returning both Super-tweeters to out of phase since the Quad 57's are phase inverting.