Nelson Pass said:
I'm not certain Nelson. I still have to complete the Hexagon project, using the B20. Also, I have a couple of other projects, which do not include a full-range driver. Then my next project will most likely be a single-ended valve amp, which will take a bit of time to complete. I may never get around to another project using another full-range driver.
Oh, I forgot! I am going to do another hexagon project and use something other than walnut, which I am less than thrilled to include. Walnut is Not amongst my favorite veneers. Why? It's too dark, and everyone like the stuff, for some G-d forsaken reason.
ttan98 said:
For some of Nelson's recommendations (with excellent measurements)
http://www.firstwatt.com/articles/current_source_amps.htm
click on the pdf link at the bottom of the page.
Sean
John L said:
I forgot (I do that regularly). The Bu20Fu20 has got to be the
"best buy" of all the full range drivers, and I bought 200 of them
for myself in case they became unavailable.
It's a very pleasant driver, its sins being mostly those of omission
rather than commission, and that's a difficult thing to achieve.
It is also one of two full range drivers that I feel comfortable
subjecting to a little abuse on the low end. Both the Pioneer
and the Seas can take quite a bit of excursion without the
sounds that indicate physical damage. I am working up open
baffle examples of both running full range, without help from
additional woofers.
Nelson Pass said:
I agree sir. Not sure if you have been following things, but I have taken a little bit of liberty with my B20s, by drilling through the pole piece and setting out a PE tweeter, on top of a 1 1/2" stand-off. Once I finally get the diffraction lenses complete, I can finally wire it through the magnet assembly and give the driver a test drive.
An externally hosted image should be here but it was not working when we last tested it.
Naturally one would be hesitant to attempt radical surgery on other, more expensive drivers. I wonder why Pioneer doesn't play with this obvious winner and actually work up their own two way fullrange? Looks to me it would be so easy to do.
One other thing. If they went out of their way to make the B20 more efficient, would that tend to screw up the equation?
ttan98 said:
Flawed as they are, full range drivers are still charming, and
the best examples can be pretty spectacular.
I don't want the current source amplifier article to be my last
word on the subject of full ranges, particularly as a lot of water
has passed under the bridge since then.
At under $100, you pretty much can't go wrong with Fostex
(in particular the FE166, FE206 or FF225K) or the Pioneer
BU20FU20, and you want to look at the Audio Nirvana product
as well. Any of these will get you started, with the understanding
that it takes quite a bit of fooling around with the enclosures
and such to get the most out of them. This forum has lots of good
enclosure examples - the BIB being one of the most interesting.
I have some projects coming out this year with open baffles,
and these are all good candidates, usually paired with a woofer
supplementing the bottom.
Of course you can very easily spend more, and with that you
will generally get more sensitivity and more access to the fine
details of the music, but I think many people won't appreciate
those differences until they've had some experience with the
genre.
Is that helpful?
John L said:
you must visit their hungarian page for that ;
prices are in forints , per piece
http://www.sonido.hu/hun/arlista.htm
Nelson Pass said:
That added tweet really makes a difference. Which Vifa are you using? The one I am using is the Dayton ND16FA-6. Folks around here had pretty much decided that it matched up quite well.
It certainly does fit well on the end of a pole piece. The dowel I am using is a 1 1/3" diameter and has just enough left out so as not to get in the way of the voice coil. Wrapped with black electrical tape makes it look just like it actually belonged there.
Unfortunately I don't have all the necessary equipment to run a testing with it, but the B20 is so accomodating, that it just seems to Want to work well.
Nelson Pass said:
Thanks for your input, I have experimented with FR drivers, particularly the FE167E, I found the driver itself has certain weaknesses particularly the lower and upper frequencies, especially when playing certain kinds of music esp rock and heavy metal.
The upper freq can be taken care of with better quality FR like Lowther, the lower freq with better build cabinet which can get very large. The trick is better build cabinet. It is the musical coherency which is the magic which attracts most speakers builders and music lovers.
I have moved on since then, i am now experimenting with 2-way high efficiency drivers in MLTL cabinet. I think it is the best of both worlds ie FR and traditional 2-way low efficient speakers. Again there is the open baffle speakers to experiment with.
Arc said:
When I first saw this price I thought that they had a decimal point in the wrong place. $930 each? Why? At that price point Lowthers, Supravox Feild Coils, Veravox, not to mention Visaton, Hemp and Fostex are bargains.
BlkNotes said:
and as expensive as the Feasterx 9
Zen Mod said:
where do we gt these? at what price?
What is it of late. Everyone and their mother is producing a 8" fullrange there are almost 10 manufacturers of 8" FRs I can think of just of the top of my head. Some have multiple models.
Feasterx 9 series
Lowther PM 2/4/5/6/7, DX 2/3/4 and EX 2/3//4
Supravox 215 sig, feild coil, bicone
Veravox 7x
Hemp 8c
Visaton B200
Fostex 207/208
Fullrange FS series
Anyone have a comparitive ranking?
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