Renkus Heinz SSD 3301 2" compression drivers?

No, that's a RCF (D)M-82 diaphragm, as used in the RCF N-850, EAW 15410082 and RH CD3302. It's a Titanium diaphragm with Mylar surround.

The diaphragm of the SSD-3301 is made of Aluminum and looks like this:
 

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