My dad had these really in-efficient AR-3 speakers growing up in the 80s (needed a lot of power to drive). When moving they were so heavy, turns out not Base R

My dad had these really in-efficient AR-3 speakers growing up in the 80s (needed a lot of power to drive). When moving they were so heavy, turns out not Base Reflex but a defunct speaker technology called "Accoustic suspension" http://en.wikipedia.org/wiki/Acoustic_suspension http://en.wikipedia.org/wiki/Acoustic_suspension