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The lack of a speech diaphragm imo is actually not a bad thing as it does have very very good capability for integrated comms and avons speech cone thingy seems to work fine for the most part on all their masks they've used it on, actuslly outdoes certain speech diaphragms and it has the added benefit of cutting down on parts and complexity which for cbrn equipment is always a plus.
![c50 gas mask c50 gas mask](https://beneluxmasks.files.wordpress.com/2020/01/c3.jpg)
Good review but there are a few points I disagree with, namely from the diaphragm, blanking plug and comfort angle.