A while ago I saw a post on Facebook with a guy asking about these bronze plates that had a Leslie logo on them. I thought they were A-200 diaphragms so I arranged a sale of them.
I got them delivered the other day and turns out they are A-300 diaphragms.
300mm in diameter and a whopping 4mm thick!
I have no use for them but if anyone does send me an offer please. These are new and I’d like them to be put to use.