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Hello all, Don't get on here much --as this is quite important best to check first before pulling the trigger. I have run my fair share of hi efficiency speakers but never Fostex. Considering going to the BK20 Madisound kit --would love to just go the basic offering with the 206en in it without super tweeter. Price is practically a no brainer. 669 for everything except shipping. That includes the drivers.. But naturally, I would prefer to spend more money.. (not really) and go for the 208ez and the super tweeters .
Primary concern>>>> What about the Fostex driver "shout" that has been mentioned so often over the years?
Anyone here been able to compare a BK20 w/the 206en vs the 208ez with super tweeter or the 206 with the super tweeter ... or just the standard BK20 w/206en?
Unfortunately when running both higher power s/s amps along with assorted low power SET amps that can easily dictate that more than one type of speaker is needed. I just got a pair of Harbeths 7es-3, and they are definitely all that they are supposed to be---but certainly are not meant to be driven by a 2a3 amp.. I do have some Hoyt monitors which are great considering these were the budget offering from Omega--- the next logical step with Omega is the Alnico..
Follow Ups:
IMO save your Sheckles.. a Mehh design And driver.
One could do better for less.
Just saying.
Madisound ---- BK20 is the kit they sell,, back wave horn. used with Fostex drivers 206en or 208ez sigma.. lot more scrilla. for the 208ez. Word is on a forum that I visited is that the BK20 plans were specifically developed in Japan (dont recall who) for 208 sigma driver.
No one in this forum has built or otherwise used the BK20 or other BK cabinet?
The FE-207E, at least, seemed better balanced to me -- but they've been OOP for quite a while.
Don't know about modern (much less, more expensive!) Fostex FRs, unfortunately.
:-)
all the best,
mrh
206 166 are for horn loading and will sound off if not used in such 207 was for ported designs. All have similar response and sound best with toe in to get balanced on and off axis response. Much of what people complain about in these drivers is expecting too much performance and from improper use. Since a fullrange is appealing to DIY types many mess up are going online mentioning poor sound or expecting the wee 4 inch to rock the world.
Kloss---Have you used the 208 sigma and what are your impressions and what is your cabinet of choice?
Way back in the Bottlehead Paramour days everyone was using the 104E in the Fostex designed enclosure. Mine had Lovely mids and soundstage and coherence but an AM Radio above 5-600 Hz. Fun to build, too.
Later, Transmission Lines came along for the 166 and 208 that sounded good all the way up with correction circuits but lacking dynamics.
For Jazz and singer/songwriter stuff, darn good. Mahler or Metal, not so much.
nice pic ---Is that a BK cabinet then with earlier Fostex? Interesting re/lack of dynamics with the 208--to verify that was not with a BLH cabinet but as you said a transmission line?
Should have been 103E, 4" driver. The cabinet is the Fostex recommended for that driver. Don't know about the Bks.
e.g., I didn't much care for the FE-166E in Cain & Cain Abbys -- too shrill for my delicate ears ;-)
all the best,
mrh
fe166 not best in voigts and Terrys round baffle was cool but not optimal. I had 3 pair back in the day helped Terry get his 1st dealer thus the 3 pair I had to buy lol Nagaokas design is a good bit better and allows the lowly fe166e-en to shine.
Is the pic Nagaoka design? Is not the BK20, et al based somewhat closely on that? Has this type of set up run its course for you ? What would you consider the way to go ---amp is 2a3 Burgess custom build. Ive used Decware , Hoyt (Omega) and looking for a fresh start as have sold the Decwares.
206 is one of the best for Karlson applications - - it does have an ~2K6 peak but I'm not sure if I'd bother notching.
FE206EN Vs an old "BOFU" in a Druid size MLTL pipe
Karlson Evangelist
I always thought of the K like a front and BLH design. When I built my wee pair I optimized that aspect of it. I still have a 1950s pair for 12s about and a K tube for 1 inch comp. Use them at times.
if you have a 206 laying around and time to muck, try the 206 in one of your K12
Karlson Evangelist
208 is the better sounding driver by a wide margin. You may want to ad a ribbon or AMT. As far as this Fostex shout you mention Ive used most all fostexs as well as many other fullranges and they do not shout cheap ones may provide inferior high frequency. Thus why I prefer the sigmas the 208 rolls off at 9khz so in reality its not a fullrange this is good allows one to have the best of what wideband does without the inferior high frequency. The BK20 cabinets OK not great but will work.
Ok, now I get it now why a tweeter is used in conjunction. Thanks for that. What cabinet set up would you prefer ? My thinking on the BK20 was to enter into BLH territory--using the Fostex T90a tweeter. Open to other cabinet designs although need ready to assemble kit.
skiroe, "kloss" is the John I was talking about in my reply earlier. He's your man for this project!
OK,, thanks for that.
John Kalinowski would be the person I know to ask....
He's built numerous of those blh's and has tons of experience with those drivers.
Have fun!
How to get a hold of John?
http://www.bd-design.nl/
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