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
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
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
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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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?
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?
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?
great looking driver and good strong qes for no break-in or play at all
FE206EN
quick Qts
zooming in for resonances
FE206EN
quick Qts
An externally hosted image should be here but it was not working when we last tested it.
zooming in for resonances
An externally hosted image should be here but it was not working when we last tested it.
mounted it in a stock 1954 "Karlsonette" - impression of BIG & dynamic drum on "The Spirit of the Chinese Drum" - a lotta sound for 3.3 cubic foot external bulk - -oh - is it normal to have Fostex frame's corners flex when tightening down to a flat surface? I think I got the hole large enough (?)
front
rear
front
An externally hosted image should be here but it was not working when we last tested it.
rear
An externally hosted image should be here but it was not working when we last tested it.
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I flexed the corners "a bit" - did I not get the hole large enough??? - do they sit completely flush?
input Z
http://img85.imageshack.us/img85/7449/karlsonettefe206enz1.gif
input Z
http://img85.imageshack.us/img85/7449/karlsonettefe206enz1.gif
Well, this is a pleasant surprise. Actually, the numbers Freddi got are reasonably close to what I measured from the old 206's. This means that I will be able use the new 206 in my MLTL's and BR's. The 207 has a more laid back, mellow sound that I happen to like, particularly with an FT17H on top, but I kan work with the 206. The 206 really need a bit of series resistance, so I can use 20ga air core inductors instead of those 16ga Erse Super Q's.
I hope that the 166's come in well above spec on Q also.
Bob
I hope that the 166's come in well above spec on Q also.
Bob
Freddy,
Have you had a chance to compare the Fostex 206 to your W8-1772 in the K-12?
Thanks
Attachments
The FE206 & FE166 have the highest variability of any of the drivers i have reasonably large sets of data to use.
Do keep in mind that this is 4 batches of 4 drivers measured on different days, The differences in weather can have a large affect. If i was to measure them all on the same day, i'd guess variation would fall in half.
The assetix should also say "naximum difference compared to average" -- (maximum value - minimum value) / average value
dave
Do keep in mind that this is 4 batches of 4 drivers measured on different days, The differences in weather can have a large affect. If i was to measure them all on the same day, i'd guess variation would fall in half.
The assetix should also say "naximum difference compared to average" -- (maximum value - minimum value) / average value
dave
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