Usher 8945 'measured' T/S parms

[percy]

I am looking for T/S parms of the Usher 8945 driver that have been measured individually, and not just the manufacturer specified values. The reason is that on Zaph's website (in the 6.5" woofer shootout) the T/S parms of this woofer (especially the Qts and Vas) and quite different from the manufacturer datasheet or whats on the vendor's website.
Zaph's measurements were done in '06, did this driver go through a revision after that ?
If anyone has self measured parms please do post here.
Thanks!

[percy]

wow really ? no one else around here has measured this driver ?

[sdclc126]

You might try contacting Jay_WJ at

http://www.geocities.com/woove99/Spkrbldg/

I'm not sure if he's done T/S measurements of the 8945P but since he's done a few designs with it he would be a good source to consult. I know he's mentioned that the "breakup node changes up to +/- 300 Hz due to its unique cone---QC must not be easy with this type of cone."

His site mentions measurements by Mark Krawiec at www.speakerdesign.net but I don't find any of the Usher.

Jay designed the crossover for my speakers which use the 8945P -

8945P + 27TBFC/G Floorstander -

I can certainly vouch for its oustanding performance.