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Old 27th March 2010, 07:46 PM   #1
freddi is offline freddi  United States
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Default anyone get/analyze (stock Fostex) FE206En?

gotta pay for one, published specs show ~3 gram reduction of mms giving higher Vas and fs, xmax is rated lower from 1.5mm to now 0.8mm, eta zero higher.

I don't have simulator on my old mac to see various impact - assuming specs and sims are good in the first place

anyone here get FE206En and give it a listen?

New FE206En
http://www.madisound.com/catalog/PDF/FE206En.pdf
old FE206E
http://www.madisound.com/pdf/fostexdrivers/FE206E.pdf
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Old 27th March 2010, 08:28 PM   #2
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I'm not sure if they're shipping them yet, although if they haven't started, I can't imagine it's far off.
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Last edited by Scottmoose; 27th March 2010 at 08:32 PM.
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Old 27th March 2010, 08:46 PM   #3
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When i last conversed with my Madisound rep he said they were out of FE206e, and (implied) they were shipping FE206En ...

I'm not happy with the new name... confuses people when i say FE206eN, and what am i to call the new ones? FE206EneN?

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Old 27th March 2010, 08:55 PM   #4
freddi is offline freddi  United States
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might you add "P10"? = FE206eNP10 or FE206P10eN (for your well known planet10 handle) - or is the resulting name too long for most folks to remember?
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Old 27th March 2010, 09:05 PM   #5
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That is a good idea... FE206P10eN... it even rhymes

dave
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Old 27th March 2010, 09:23 PM   #6
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At the risk of being controversial...

Acceleration factor Γ taken in meters per second per second per ampere comes out quite well for the new unit (working with the factory specs. as our baseline -Mark's testing of a pair of 127s seems to suggest that they may be more accurate than we thought; looks to depend on the gear)
FE206E = 770ms^2
FE206En = 872.95ms^2

Less controversially & FWIW:

The new unit with only about 53% of the linear displacement of the old one & the same cone size will be be somewhat more restricted in terms of dynamic BW.

Published EBP for both units is consistant with the claimed figures.

Fhm per Keele
FE206E = 454.245Hz
FE206En = 483.611Hz

Fhm per Leach et al
FE206E = 433.333Hz
FE206En = 463.917Hz
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Last edited by Scottmoose; 27th March 2010 at 09:28 PM.
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Old 27th March 2010, 09:47 PM   #7
freddi is offline freddi  United States
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that would be nearly a 6dB dynamic penalty for the new driver if its qt went dramatically up past the 0.8mm xmax and within 206E's 1.5mm window and if 206E were linear within that window. Are there studies of dynamic compression or Dumax type examinations for common fullrange drivers? Could it be crudely estimated with examination of a brief wav of say a big odaiko drum beat compared with a recording of a speaker playing that wav?
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Old 27th March 2010, 11:52 PM   #8
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Volume and dynamics mean precisely squat if they can't get rid of those breakup modes, which I'm sure they haven't. How's that for controversial!
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Old 28th March 2010, 02:24 AM   #9
freddi is offline freddi  United States
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won't hurt me - unless 206 universally sound crappy I"m going to go for 1.875 cubic foot external bulk Karlson coupler - the HF lobe will be tilted 30 degrees up. Do 206 breakup like 12" multi-rib cone guitar speakers? (I like those even on vocals) - do Nirvana's 8" speakers play better midrange than Fostex?
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Old 1st April 2010, 07:45 PM   #10
freddi is offline freddi  United States
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great looking driver and good strong qes for no break-in or play at all

FE206EN

quick Qts
Click the image to open in full size.
zooming in for resonances
Click the image to open in full size.
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