there is a very real possibility that Robert Stephens designed these cabinets.
here is jim lansing's version, before he joined/was bought out by altec -
Mystery Speakers???????? ALTEC? Trusonic - Tru-Sonic?The Stephens Tru-sonic Manufacturing Company was established as early as 1938;
by Robert Lee Stephens,
former draftsman at MGM studios and participant in their groundbreaking
Shearer Horn Two Way Loudspeaker project along with Jim Lansing, John Hilliard and others.
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