In Reply to: You're both correct... posted by Coner on May 22, 2012 at 14:32:18:
They all measure 1.4", if you remove the rubber washer there is a step that is 2" and the thickness of the washer.
I have Altec examples back to the Hollywood days with rope seals, all the way to the latest ceramic units (and IPC branded drivers).
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Follow Ups
- They all measure 1.4" - djk 03:56:07 05/23/12 (0)