I guess my question got lost in the thread but here is the answer. Back then Bose 901's where very popular and expensive. I blind folded people and ask what set of speakers sounded better. I would switch back and forth from the 901's and the HPM-100's. The HPM 100's always won. 901 owners would always be shocked. Pioneer HPM-100 - Wikipedia, the free encyclopedia obtw all we had back then was vinyl.
On the subject of vintage speakers. Anyone remember these?
NightRyder