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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy, if you have some spare diaphragm/VC assemblies for your S2 drivers, do the experiment I mentioned above (remove the outer layer of the VC) and we will talk about the inductance in terms of sound after you hear the results with your own ears... ...
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[quote user="anthony"]It is a compression driver with an 8" cone. If you want authority at 300Hz you will need diaphragm area. The Fane Studio 8M that Romy and plenty of others use for 100Hz up to 1kHz is an 8" cone driver on a 4" throat with a clo...
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[quote user="Romy the Cat"] However, do not use word “brake” as it if from the words of mass-centric drivers. Horns are not about mass and exertion but about velocity and consequential pressure, so in horns there are no brakes but rather damping over...
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Romy, thank you very much for very detailed explanation of your horn theory.Let me present some doubts about it. From physics basics when we have more than one springs (suspension, throat resistance, back chamber) we can consider it as one spring. Th...
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[quote user="Murataltuev"]Romy, thank you very
much for very detailed explanation of your horn theory. Let me present some
doubts about it. From physics basics when we have more than one springs
(suspension, throat resistance, back chamber) we can...
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[quote user="Romy the Cat"]
Well, acg, I am not wild about your idea of the curved frame,
primary on the reason of esthetics but it is your speaker not mine and you
shall do whatever pleases you. A few mandatory things that I would like to
men...
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Hello guy,
Regarding your question : "...What ratio of diaphragm area to throat area did you arrive at (for the large horn) & how did you choose it?..."
The ratio I used for the 45Hz horn is about 65% of the ø of the diaphragm LESS THE SUSPENS...
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[quote user="Romy the Cat"]… this conversation kind of “got me” and I consulted with people, who know theory well, asking them to provide their explanation of the angling phenomena. They explained the phenomena by the smearing the arrival time due to...
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[quote user="nietzscheflake"] I am also thinking about how to get that headphone sound in my house and am contemplating the horn route… [/quote]
It ‘s fine but never forget that the imitation of headphones sound is NOT something that need to b...
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[quote user="cv"] Or build your own outer magnetic circuit as you are saying, retaining the S2 diaphragm, phase plug, pole pieces and throat.... [/quote]
If you read the thread form beginning then you will see that it was my original ultimate intent...
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There is a test of the 17 cm Görlich with rubber surrond in the new Hobby Hifi.Very low fs (23 Hz) and low sensitivity (86 db). There is a clear surround resonance, so maybe it would be wise to wait for the announced models with cloth or foam su...
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[quote user="Romy the Cat"] your diver might be a very good MF diver but it does not go to region where the “tizzing” live.[/quote]You may not believe me, but the driver start to roll off (very smoothly) after 14kHz and at 20kHz is at -6dB. I intent...
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Jessie, we keep meeting at the same intersection. Like I said before, I agree that direct radiators suck, for all the reasons you cited. But if what you say about horns is strictly and completely true, then does it not follow in spades at ever lower...
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As late as the 1960s every self-respecting hi-fi nut had a "secret recipe" for "speaker dope". My own guru would not give me his exact recipe for speaker dope but insisted that developing the stuff was a rite of passage I had to go th...
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[quote user="ulf"] If you have no experience of HornResp I suggest that you download a copy and try it out. It is a very neat software that is useful when designing horn speakers. You can easily make simulations and get a decent result concerning fre...
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Scott, I tend to think of IB in simple terms, basically, literally, as an "infinite baffle", the idea being that there is no load other than "open air" on either side of the driver diaphragm, and there is no "baffle step"/acoustic short between the t...
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[quote user="Murataltuev"] anthony wrote:It is a compression driver with an 8" cone. If you want authority at 300Hz you will need diaphragm area. The Fane Studio 8M that Romy and plenty of others use for 100Hz up to 1kHz is an 8" cone driver on a 4...
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Being a musician, I deal with constructive resonance every day. Tubes resonate as a function of length, boxes resonate as a function of the internal length, width, diagonals. Irregular shapes resonate as a function of volume, horns resonate as a func...
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[quote user="Murataltuev"] anthony wrote: Murataltuev wrote:So, the question is still opened: how to get 300-400hz.Perhaps give the JBL 2169H a try. It is supposedly very good from 300Hz to 2.2kHz, but I have never tried it. Use it in a sub 200Hz t...
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Hi Paul,The Cogent diaphragm I have seen pictures of was woven carbon fiber with a leather outer surround. I have never listened to a Cogent 1428 but they must sound very good, at least Bill Woods and Bruce Edgar say so.Besides their overall ultra cl...
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Romy,To clear up a few things about the Kilimanjaro RCA1428 clones.The B&C DCM50 is a modern, neodymium clone/copy of the RCA MI-1428B. It was designed and built by B&C in Italy after Bill Woods of AHhorns talked the CEO into it. The DCM50 is...
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[quote user="Jorge"] This is something I have been at for the last few years, I have tried a few drivers, at the moment some of my favorite are the vintage RCA MI 1443, yes filed coil and some funny cone diaphragm, they are used from 500 hz to 5 kh...
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OK, I like this game. Why not dream of a very wide range driver, say, from 300 - 12 or 13k? Maybe a bit larger diaphragm and less "compression", along with a faster horn, could do the trick? Some sort of ??? for the beaming. Shoot for 6 dB X/O "...
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[quote user="audiofilofine"]After several tests of listening and somehow I felt that the best solution is fully closed. The heat is part of the project and not to damage the diaphragm, also the hot air is compressed better than cold and thus distorts...
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Oh, yes this is the whole idea of Remedies, it is not only a Red combination but it is an assembly with midbass channel which would make it a conventional box loudspeaker. You see, with all interesting things about Tannoy Red the woofer part of t...
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[quote user="Jorge"]I guess it would be simple enough to add a couple of inches in order to bring the throat down to 4" in order to try the Studio 8M. I have already reduced it temporarily to 3" in order to try the JBL 2490h compression driver. ...
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Listening the argument of the field-coil’s people I note that they constantly stress the demagnetization subject of the driver’s magnet, advocating that with electromagnet “the field coil will always produce the same strength now and 100 years in the...
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I was slowly looking for a compression driver that would go in my Fundamental Chanel down to 200Hz. The YL Acoustic 550N attracted my attention. Then I realized that it is the narrow throat type of the drivers, aka WE555, not exactly that I would...
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I have always thought my old Altec 802's with the concentric ring phase
plug sounded better than my newer 802 G with the Radial phase plug. If i
had to describe the difference i am hearing i would say the concentric
ring style just simply sound...
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I sometimes visit an Australian site and familiarize myself
with progress of “acg” who it trying to build Macondo like acoustic system.
http://www.stereo.net.au/forums/index.php/topic/75784-deep-end-diy-my-first-speaker-project
A few weeks a...
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