beyma

Hi guys, I recently got two Beyma 10G-200 10" drivers on my table. I don't know where they were used before and how they were treated. Driver number 2 (Beyma 10G-200 NR2) has a small problem with the cone. It is separating on a ca. 5 cm section from the surround. I intend to repair the driver...

How are the Beyma drivers against other mid-range options (Scanspeak for example). Also, where and how do I buy them in the US? I normally buy from Madisound Speaker Store and Parts Express, but both seem to lack drivers from Beyma.