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RE: Polling people who've heard TAD 4000 series drivers

Hello Duke,

I heard that the next generation beryllium diaphragms for TAD drivers will be built in China.

(This doesn't mean they will be bad, we know a lot of excellent manufactured products coming from China).

The TD4001 is an excellent driver, one of the really best.

BMS, Radian, Beyma doesn't play in the same league.

A quite embarassing problem, but fortunately rare enough, when buying a used TD4001 from a pro is that it appears sometime some ageing of the suspension. On the TD4001 suspension forms a single part with the diaphragm. Beryllium is a very hard and fragile metal and its use as suspension material is questionable. The replacement diaphragm from TAD is very expensive too. This probably explains why sometimes TD4001 diaphragms are replaced with Radian diaphragms.

Best regards from Paris,

Jean-Michel Le Cléac'h

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