Through my continued research, I have derived that the WE 555W variants led up to the development of the RCA MI-1443. The 1443 is a completely *psychophysiologically unhealthy driver* to listen to primarily due to the rough phaseplug design and construction, secondarily due to the incorrectly short distance of the cone from the phaseplug, thirdly due to the sloppily wound fieldcoil windings, fourthly due to poor quality metallurgy.
I believe that the COMMUNITY M4 designed by Bruce Howze was based upon his knowledge of the RCA MI-1443, but more directly his knowledge of the Harvey Fletcher 20" diameter bass compression driver.
I believe that Steven F. Schell's COGENT DS-1428 and DS-1448 were not based upon the design of the RCA MI-1443, but rather upon the COMMUNITY M4.
Neil
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