Has anything come to light on these mysterious centrepieces? Thought I'd ask as its been a while.
.. Everyone has a different opinion regarding what the toroids are. My opinion: Since SM worked in the speaker design business at Spherics Labs as Chief Engineer, he must have looked at methods of combining channels for a subwoofer system, which in those days were not amplified and merely the sum of the two channels with HF info removed from the woofers. Spherics Labs did sell passive subwoofers with a pair of satellite speakers for the HF. This is accomplished with a toroid choke with two windings. After much searching I found the attached pdf. I do know from communication with Jack Durban that a lot of stuff was tossed out when Spherics Labs folded and Stephen did grab a lot, e.g. the plastic rings for the open TPU were part of the speaker grill assembly for the floor standing "pipe" speakers. Also speaker connection terminals can be found on the open TPU. That's my guess. Occams Razor Regards, ION
« Last Edit: 2016-08-04, 13:34:42 by ION »
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