Happy to join, am electrical engineer by original training, long abandoned for career in medicine.
Have designed / built a number of speaker papers, and built modified some tube amps, generally ones from kits though.
Currently have two systems, one single ended with 300B amp (Welborne Laurel, lots upgrades) and single-driver folded backhorn (Sachiko).
Second system has AR 150 Amp and Magnepan 3.7i.
Thanks!
Chuck