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In Reply to: RE: achieving true posted by unclestu on July 30, 2014 at 11:20:14
Hi and if i understand rightly the only way to achieve pistoni motion is with a rigid membrane
If i think about plastics i cannot see the "stiffness"
I would go with metal cones with some kind of treatment to tame the ringing instead ... just an idea of course.
Kind regards,
bg
Follow Ups:
Plastics cover a wide range of materials. Some can be very stiff. Current trends for woofers seem to comprise multilayer laminates though. Focal with CF/kevlar/ nomex cone.Vandersteen with CF sandwich around balsa core.....The Vandys are interesting. Claims the cone is almost 6 mm thick where it meets voice coil since that is where cones distort the most.
FWIW
Edits: 07/31/14
Hi and thanks very interesting indeed
Of course there is plastic and plastic
Also fiberglass is used by Scanspeak and others i think
Balsa in an interesting new entry for materials ... i have found an example of use
Thanks again.
Kind regards,
bg
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