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Old 22nd December 2006, 02:47 PM   #11
VadimB is offline VadimB  United States
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David,

Somehow I did not think about it first, but it should've been the first thing to think about. The BLH for (now discontinued) FE208ESigma is only 920 mm tall. It was regarded as pretty good design. The link to the drawing is here: http://www.fostexinternational.com/i...load_2full.jpg
The original BK-20 horn is only 900 mm tall. The spec sheet is attached. Unfortunately, I could not find the drawing of the insides of this horn. Try to search the web, or, sombody on this list is sure to have it.

Good luck and happy holidays,

VadimB
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Old 22nd December 2006, 03:14 PM   #12
pjanda1 is offline pjanda1  United States
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Default Re: FE206ES-R in short enclosure

Quote:
Originally posted by DavidLewis2
While Iím at it Iíll sneak another question in ! CAT5 has been recommended to me for the internal wiring but if I was prepared to pay extra to make the best possible speaker is there anything else I could go for ? I was looking at silver wiring and silver plated binding posts but am slightly worried that Iíll get detail at the expense of warmth. Is there any good copper or copper/silver wiring available ? Can you get copper binding posts ? ........ if so would I want to ?
I'd get plenum rated (teflon insulated) Cat5, as the capacitance will be lower and PVC is yucky. I use the Cardas Patented Binding Posts. They are rhodium plated copper, and a really neat design. You can get fairly inexpensive Beryllium copper (gold plated) posts made by Pomona for test equipment. The Eichmann binding posts would be a good option to.

Of course, I'd only resort to such things if, like me, you are a little crazy and can't stand the idea of a big chunk of brass in the signal path. I also move a bit, and play with gear a bit, so having detachable speaker cables is worth it. Captive speaker cables are by far a better option than any posts, pure in every way and the price is right.

pj
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Old 23rd December 2006, 07:13 AM   #13
chrisb is offline chrisb  Canada
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I had a chance to hear Frank's 206ESR's in Fostex's recommended design this evening. Vinyl only, and Welborne DRD45 / Bottlehead Paramour 2A3 amps.

In 4 words, well worth the wait. ( it must have taken Frank 2 months of evenings and weekends to complete the assembly )


In a few more words - perhaps some fine tuning of chamber stuffing/damping, selective treatment (i.e damar or C37 on whizzer) and phase plugs can improve the performance of the upper octave or so, but as far as dynamics and weight through the bottom - this horn works wonders.

count this as an enthusiastic vote for the sonics of factory design (too bad about the awkward aesthetics and physical weight of the boxes)
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Old 26th December 2006, 01:56 AM   #14
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troubles...

I had troubles with cat5e on this driver. it made them sound shouty. not the case always, but in general i consider 5e to be a good motivator... I think that regular old 22 ga copper wire. like amp hookup wire, might be the answer for this driver. it is well balanced overall in my system. then again, I am poor and cannot deal with wire searching.

as far as damping goes, a piece of it placed just like the manner that fostex recommends for their other enclosures does wonders. the BAF polypro stuff, or whatever is nice. like an inch thick. stay away from the dense stuff. it kills the sound, not the unwanted high frequencies.

p-16s just mucked things up.

the whizzer is the best I have ever heard, when the rest of the stuff is dealt with. I wouldnot touch a pair of these drivers, but again, I am poor so they are irreplacable.

Clark
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Old 26th December 2006, 06:15 AM   #15
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Quote:
I wouldnot touch a pair of these drivers, but again, I am poor so they are irreplacable.
Poor....at least you can afford them in the first place

Sean
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Old 29th December 2006, 04:02 PM   #16
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Thanks for the replies everybody - lots of useful info. Bluemenco, what are P-16s ? Thanks.
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Old 29th December 2006, 11:48 PM   #17
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Old 31st December 2006, 12:02 PM   #18
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Thanks Scottmoose. Bluemenco, I read that you had a lot of trouble getting your 206ES-Rs right, but are you happy now that they are a step up from standard 206E's ? At the moment I'm looking at 206ES-Rs in 208Sigma cabinets (old 208Sigma) unless anyone can suggest different ..............? Thanks for all the advice everybody. Next problem is to find a North of England supplier of 21mm plywood; 18mm and 24mm are easily found but not 21mm. Thanks again everybody.
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Old 2nd January 2007, 12:33 PM   #19
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I've decided to place the speakers inside the beams, the beams are 2.88m apart and my listening position is 4.2m back, I think this placement will be OK and I can now build taller speakers. The choice now is FE206ES-R and FE208EZ recommended enclosures .......I seem to think that the FE208EZ's get the peoples vote ....? Scottmoose, thanks for that math sim offer but I don't think I'll need it now. Thanks.
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Old 2nd January 2007, 12:47 PM   #20
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I'd use the Sigma box. But either should do.
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