that surround is not really new, I think they have had it since the e series 9500's, I am not sure thoughSo if i buy a recone from DD, it will have this new high surrond on it. Or will it be the standard one?
I don't know about other series of DD but 9500 has over 1" one way excursion and must be linear.You can check my 9515 pushed to limits hereJust so you know, most DD subs have an xmax below 16mm (I think the 9100s might be 18 though but I'm not sure). That doesn't mean it's their max excursion though.
The 9500 series has about 14mm of xmax if I recall correctly. And again, you're confusing xmax with the throw of the sub. DDs use an underhung motor design which almost always yields a smaller voice coil length and lower xmax. This does NOT mean that it's total throw is limited nor does it mean it sucks like people seem to thing. Contact DD and ask them if you don't believe me.I don't know about other series of DD but 9500 has over 1" one way excursion and must be linear.You can check my 9515 pushed to limits here
http://www.realmofexcursion.com/videos/Digital%20Designs/9515.2.wmv