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Old 13th July 2018, 02:31 PM   #21
OlavHaal is offline OlavHaal  Norway
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Hi there!

Following (interresting drivers) - my FHXL(Alpair10.2) may need a tuneup to keep track with my OB Betsy/Eminence....


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Old 13th July 2018, 05:29 PM   #22
GM is offline GM  United States
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Originally Posted by Bigun View Post
It relies on the cone surround to centre the voice coil.
I wonder if the Babbs' patent has run out or still active for DC Gold? Its spider-less ball bearing guided VC allows super limp surrounds and at least for the late Lorelei driver, a 1"/25.4 mm Xmax, allowing a small driver to truly be 'full-range' for all but the infra bass.

Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
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Old 13th July 2018, 06:08 PM   #23
Scottmoose is offline Scottmoose  United Kingdom
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If this is the one you're thinking of, expired according to Google Patents (so I might be a bit cautious in assuming it actually is ) : US6721435B2 - Acoustic loudspeaker with energy absorbing bearing and voice coil, and selective sound dampening and dispersion
- Google Patents
"'That'll do", comes the cry of the perfectionist down the ages.' James May -The Reassembler
www.wodendesign.com Community sites www.frugal-horn.com http://frugal-phile.com/

Last edited by Scottmoose; 13th July 2018 at 06:16 PM.
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Old 13th July 2018, 06:13 PM   #24
Robertburchell is offline Robertburchell  Canada
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Very interested to see some specs/frequency response plots on these drivers. Lots of little design ideas in the works and I've been looking for some wide dispersion, very wide bandwidth drivers.

Alpair 7 and 10 almost fit the bill. Maybe these will be the ticket!
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Old 13th July 2018, 09:06 PM   #25
knarfor is offline knarfor  United States
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Mark Fenlon discussing design and these drivers at NWAS 2018:

Talk of the new drivers starts at 19:25


Last edited by knarfor; 13th July 2018 at 09:29 PM.
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Old 13th July 2018, 09:45 PM   #26
anorphirith is offline anorphirith
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wow I almost placed an order on the 10.3 yesterday ! good thing I waited
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Old 13th July 2018, 10:03 PM   #27
Cal Weldon is offline Cal Weldon  Canada
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Not sure but wasn't Mark still with Ted when the JX6 was made? It was spiderless. Maybe this is the largest developed so far?

Yes, I know there's no ferrofluid, but if you had little 'silicone' bumpers on the coil former, proud of the windings but shy of the exterior gap wall, wouldn't that work?
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Old 13th July 2018, 11:07 PM   #28
orangeart is offline orangeart  United Kingdom
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He was, in fact Mark often tells the story of developing that driver for Ted and how Ted insisted it needed ferro fluid and Mark insisted it didn't. Turns out you don't need it after all.
Surely building speakers could be easier...
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Old 13th July 2018, 11:15 PM   #29
planet10 is offline planet10  Canada
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Originally Posted by Cal Weldon View Post
Not sure but wasn't Mark still with Ted when the JX6 was made? It was spiderless. Maybe this is the largest developed so far?
J6T turned into the original Alpair 5. It was spiderless, but used ferrorfluid to magnetically centre the voice coil.

community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
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Old 14th July 2018, 04:35 AM   #30
Doppler9000 is offline Doppler9000  Canada
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Originally Posted by orangeart View Post

For a long time now the drivers have used Aerospace grade alloys for stiffness, allowing shallower cone profiles.
Can you please elaborate on the elements of the allow or process that allows the claim of "Aerospace grade" and how this is stiffer than say, "aircraft grade" or "military grade" aluminum?
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