Originally Posted by apple-q
Almost all of the SDC 8-mics are single diaphragm mics. (I actually don't know of any "pseudo-8-mic" in the SDC-segment but maybe there are a few.)
The 2-diaphragm 8-mics are usually the dual diaphragm LDC (U87 etc.)
The fig-8 in the Sennheiser MKH 418S is dual diaphragm.
Also, the MKH 80, 800 and 800 TWIN are all dual diaphragm. These have the same 16mm diameter diaphragm as the MKH 20/30/40 series and MKH 8000 series.