This guy!
Edgar VillchurAcoustic suspension was invented in 1954 by Edgar Villchur, and brought to commercial production by Villchur and Henry Kloss with the founding of Acoustic Research in Cambridge, Massachusetts Speaker cabinets with acoustic suspension can provide well controlled bass response, especially in comparison with an equivalently-sized speaker enclosure that has a bass reflex port or vent.
Edgar VillchurAcoustic suspension was invented in 1954 by Edgar Villchur, and brought to commercial production by Villchur and Henry Kloss with the founding of Acoustic Research in Cambridge, Massachusetts Speaker cabinets with acoustic suspension can provide well controlled bass response, especially in comparison with an equivalently-sized speaker enclosure that has a bass reflex port or vent.