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New Joseph Audio Pulsar Graphene 2

Just wanted to update my prior thread where this topic may have gotten lost.  As many of you may know by now, Joseph Audio has come out with the new Pulsar Graphene 2. This new iteration of the venerable Pulsars has a graphene coated magnesium midrange-woofer cone, and the drive motor, suspension system, etc., have been revamped. From what I have been told, the upgrade is pretty significant ... the sound is fuller and has greater ease, yet is very resolved. Jeff Joseph advises that an upgrade path will be available for existing owners of the Pulsars, too. Also, note that the price quoted in the Soundstage piece was in Canadian dollars ... Jeff informs me that the price in USD is $8,999 per pair. I am eager to hear the new Pulsars.
rlb61
markalarsen's avatar
markalarsen
658 posts
 
I found this white paper on the Seas Graphene drivers very interesting. 
http://www.seas.no/images/SEAS_Graphene_White_Paper.pdf
The cones are cast magnesium and then machined, so the edge of the cone is thinner than the center.  They are then coated with graphene.
erik_squires
16,176 posts
 
Hey @markalarsen :

Yes, what's interesting is that they discuss graphene mostly as being a protective coating. If you read the paper on the driver itself, it is clear that several improvements have been made to the driver motor, and that these are likely to be the source of most changes in the driver properties, which are subtle, not really earth shaking. The resonant peak expected with any mid woofer, but especially metal cones is still there.

Best,
E
markalarsen's avatar
markalarsen
658 posts
 
 @erik_squires Predicting changes in sound based on specs is hard to do. Have you heard these speakers?
erik_squires
16,176 posts
 
Predicting changes in sound based on specs is hard to do. Have you heard these speakers?


I make no claim to. I'm only stating that several improvements in the motor structure have occurred, and that I would guess these improvements are probably more important than the graphene coating. 



Best,


E
markalarsen's avatar
markalarsen
658 posts
 
You may be right. 
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