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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996
Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...
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Here is a link describing Meyer Sound's design philosophy, production and implementation:http://www.meyersound.com/support/forums/talkshop/drivers.htmThey began production of their own drivers to improve longevity and reliability in the field. These...
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electronluv do's not have the ability to make beryllium diaphragms or the legal stuff to even buy raw beryllium i bet with a little surfing you may find the companys diaphragms i use .Yes 3.25" is to help get beter HF extension but to also get a very...
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I suppose I have "learned a lot about drivers" and speakers over the years, but age has overtaken my production capabilities, and I am selling my stash of drivers. Included for sale is the Holy Grail of lower mid-range drivers, a particular variant o...
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Hi Roman!So, an SG-37FRP finally dropped on yr. laps;-) - glad it happened: not because you're now part of an Olympus-like lobby, but because you'll be able to judge with yr. own ears, much, MUCH better than theorically speculating on this or that......
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John Hasquin showed up a couple days ago and suggested that many of modern compression driver manufacturers design thier products to get the "best" publishable parameters while completely disregarding any basic horn design rules and actual sound resu...
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I just found this thread and can comment on the Enabled DX4s. Limono (Wojtek) very gratiously loaned his Enabled 8 ohm Lowther DX4 drivers to me this past summer (summer of 2008). It took my a while to make the crossover for these (I have...
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I have written in past about my lack of love to the BMS drivers. The crazy, as far as I concerned “annoyingly wiling” angeloitacare brought this subject to this forum while he was galloping across Web, “picking from graves” about his new dB-Design’s ...
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Jessie makes an interesting point with the idea of trying to get ULF from 97 X 2" drivers. Very few small drivers are "optimized" to produce ULF in the first place, and so far the small-ish, BIG X-MAX drivers that are intended for "bass" have not be...
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[quote user="Romy the Cat"] A few years back I wrote somewhere that I “developed” a semi-mathematical formula according to which an acoustic system’s result might be absolutely objectively weighed up. I did not go very far with advisement of this eq...
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[quote user="N-set"]I didn't make it to the 2nd video before and it's indeed interesting.Esp. how he describes the result of his trick: "addition of HF transforming into more air and resolution in the MF instead of more glow at the top"(around 2:30 a...
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Here is the idea that I had for the “ultimate bass” for my room. Below is the picture of Macondo one channel as it is now from my listening position. So, if I find a way to deal with the wall edge at my ceiling then I might replace the current 72” w...
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[quote user="ygoh"] 1.) Why is it that you do not support using teo compression drivers in the same throat? Is the distortions increases, such as wavefront distortion? [/quote]Sure the wavefront gets spread; it is what Wilson does in his ...
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[quote user="Paul S"] I remembered a host of "old" drivers from my past (not old at the time...) that, if memory serves, sounded rather muffled and slow, with humped response[/quote]Yes, Paul, that's exactly the way they sound in their original condi...
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[quote user="jweiss"] When we spoke at CES, you mentioned that your experience with field coil drivers only extended to cone types. So I assume that you have never heard any field coil compression drivers. That would include the WE 555, 594, RCA 1428...
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In the linked there above “Barn Conversion - James' Project” I have expressed my attitude toward low frequency bass. I certainly not “against” bass horn it but have “concerns”. The “open bottom” concept that I invented for myself is always make me to...
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A six year ago or so when I played with different compression drivers I bought a pair of Dukane 5A540 and at that time I was not able to find any information about them. Nowadays I was pointed out that an eBay sealer “ bayleafs” actions a pair of Duk...
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Christopher Witmer with his upcoming US show initiated a new wave of Feastrex propaganda. I have mention Christopher in context of his Maxonic drivers before:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?postID=4601
Christopher suggests ...
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[quote user="Romy the Cat"] ygoh wrote: 1.) Why is it that you do not support using teo compression drivers in the same throat? Is the distortions increases, such as wavefront distortion? Sure the wavefront gets spread; it is what Wi...
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Of cause it shall be mentioned in the context of thin there that there is always the ALE Acoustic solution. The Japanese ALE Acoustic make two midbass drivers: P1260 and P160.
http://ns.tachyon.co.jp/~sichoya2/ale/drivers.html
In ...
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I have looked at the Feastrex website. The picture you show is of one of their permanent magnet drivers. This uses their Naturflux magnetic circuit. Mr Akiyama's quote also refers to one of these permanent magnet drivers so you shouldn't be atta...
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[quote user="Romy the Cat"]Well, I do not care one way or another and I truly have no “concern”. I have my drivers; I think I have some spare – so why would I care about new productions. [/quote]Romy, I am very pleased that you have your drivers. And...
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LOTs of time pretty much wasted lately, looking at "HE" direct-radiator drivers that are actually only HE at their uppermost frequencies, with diving responses and large-to-huge power "ratings" that allow the "pros" to simply turn up the heat to...
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Since I learned today quite a bit about the Ralf’s horns I do not particularly have a lot of interest about the selection of his drivers but the stupid habit of the “derivers anonymity” is something that I do not like. I do understand when commercial...
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Yesterday I spoke with a guy at a Russian audio forum who reported that he played with addressing many problems of compression driver by pumping ferrofluid in the gap. I am not a big fun of ferrofluiding generally and in case of compression drivers i...
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If you read Danleys paper, you see that the lower you go in frequency, the more this device turns into a direct radiator. He just vents the HF drivers from the throat, more or less optimised, the midrange drivers a bit further out and the LF drivers ...
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[quote user="Romy the Cat"]
There is absolutely nothing in Fane 8M specifications that is responsible for the diver sound. So, what is the purpose to ask about the new specifications?One might think that someone can use “specifications” as an assu...
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This there is the last in the “THE PROBLEMS WITH HORNS” cycle. The previous threads might be found at:
Problems with horns: tweeters.Problems with horns: mid-range horns.Problems with horns: mid-range drivers.
This would be probably the most contro...
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At some point last year, after I had been offered an opportunity to buy some Vitavox S2 drivers from someone in Paris, and some S3s from Germany, I decided to approach Mike Harvey of Octave Audio, AKA Vitavox Hifi, to get some information about how I...
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What is it, abiout a year simce I started down this road? Time is such a swirl. During most of this time I have listented to music mostly in terms of driver "evaluations", with very little of my usual deep listening just for pleasure. Ugh. But th...
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