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I've seen mentioned a few times here and elsewhere that the Usher 8945A was recently measured by Klippel to have 10mm of xmax, and in the same test set, the Seas Excel W18EX had ~3mm of xmax. Does anyone have the actual reference for this information?
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It was probably at DIYmobileaudio.com. I'll go look. npdang there does a lot of klippel measurements and publishes the data. -
IIRC, the 10 mm figure was stated on PE's January or February flier, where an Usher speaker designed by Joe D'Appolito was described. I'm not absolutely sure, but I think I did read it there.Javier HuertaComment
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I read it there as well; however, they don't reference the source either --unless i'm to assume they did the test. It looks like npdang over on diymobileaudio did the excel test, but not the usher.Comment
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Speaking of Usher, the exploded driver diagram on their web page look kinda like an Accuton/Thiel klone, complete with the grill over the front. I can't find which model it might be though.
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That must be their new 5" beryllium (oxide ??) driver that they use at their top line. I haven't seen the inners nor the frame etc of an Accuton driver, but I think it is too early to just call it a clone because it uses a grill. The motor actually looks very much like their 8945A midwoofer's motor, with the particular shape of the T pole piece and the aluminum shorting rings. I used to have a simple technical drawing of the 8945A, that is why I am saying it.Speaking of Usher, the exploded driver diagram on their web page look kinda like an Accuton/Thiel klone, complete with the grill over the front. I can't find which model it might be though.Comment
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