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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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The AA guy with name Kloss runs on side a company “KCS loudspeakers”
http://www.kcsloudspeakers.com/
I do not think he does anything with his company. He is known for years helping other DIYers like himself to make theirs loudspea...
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I use a direct radiator monopole for below 650Hz, this is OK and I have it working well. I think that I want to control directivity so that I can stop floor/ceiling comb filtering which gives me problems of +/-6dB and more. Now I am using extra monop...
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I have a couple of queries relating to the transition from the mouth of the S2 driver to a horn generally, and to a 400Hz or 250Hz horn specifically. The profile calculator that I use for tractrix horn (horncalc) does not take into account the de...
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Hi rowuk.Shark skin decreases the formation of vortexes in fluid flows over surfaces and thereby reduces drag.Shark skin resembles fine sand paper and has actually been used as such.Of cource there is a difference between a stady flow around a shark ...
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[quote user="eduardo"]
YL 75000 has heavy phase plug indeed , rca style (see sketch) while 1250 ( I never had one) gets a fixed metal dome equivalent to spherical piece on 75000 and rca plugs without conical shape pointing the exit of throat. Ir...
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I am not sure that there would be an audible advantage to the larger feet, but they sure do look pretty nice!I know that Mirko makes such feet, as well as feet for the motor unit. Unless you love machining, it might be easier to buy from him. I was w...
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YL 75000 has heavy phase plug indeed , rca style (see sketch) while 1250 ( I never had one) gets a fixed metal dome equivalent to spherical piece on 75000 and rca plugs without conical shape pointing the exit of throat. Ironi...
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Since in my new house I will have no room height limitation I am consenting to replace my 250Hz tractrix conical horns with 200Hz exponential horns. I think in this horn I will be able to drive my S3 driver lower and will be able to pick more of the ...
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Up to the first fold the horn is somewhat conical as seen in post #1 picture.This picture shows the exit w/ additional angle wall (making for "corner" loading).This has a greater (uncalculated) flare something like a compound CD horn.Resonant F unkno...
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Lets look at it...http://home.planet.nl/~ulfman/"The
carlson is a broad band resonator" - hrm... It does ocour as
elegent solution on first looks but do you wnat a broard band
resonator coupled to the end of your midbass horn? This aside it doe...
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It is interesting that S2 phase plug, if to look at it from throat, ends up with round-head bolt. The head of the bolt has a channel for a flat-head screwdriver. This channel should introduce an asymmetry into a perfectly symmetrical phase plug and i...
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Steve Schell and I are currently using Le Cleach horns in our system, The more I listen to them, the more I like them. They sound slightly less directional and beamy than a tractrix, and overall an extremely pleasant sound. W...
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Ah Romy, did you not know that the old JBLs, RCAs (and possibly S2 as well) all have an internal flare rate of 160Hz? This is but one reason why I'm asking Martin Seddon to make me a pair of 160Hz horns......just had a look; it may have been 180:http...
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Andy, is conical shape and the flange around the moth is just the rational for cheap manufacturing? When a horn acts s a transducer the flange is not a positive thing… It would be very interesting how you select horns characteristics for your microph...
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[quote user="op.9"] One thing nobody has mentioned is using the room’s corners. Is this a no no? I’ve been trying use McBean to model a horn exiting into the corner – with a middle ‘mouth’ about 1m squared - and using a conical approximation as the r...
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[quote user="RonyWeissman"]I heard the Audio Note AN-Es, they were pushed back into the cornes in specially prepared room and they wer very interesting. Dynamics were world class, cellos were extremely hairy, piano left hand was tremendous, everythin...
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more info about this horn from AA:http://db.audioasylum.com/cgi/m.mpl?forum=hug&n=107444&highlight=edgar&r=&session=These horns are an alternative to my 150Hz Tractrix. They are 77Hz, 3/16 mouth front horns with a conical shape. This ...
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[quote user="skushino"] • total horn length (incl. back chamber) shall not exceed 1,00m • the horn shall have conical approximation of a hyperbolic flare contur with m=0.6 • the horn shall have a 5/16 mouth size of a free space horn •&...
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[quote user="slowmotion"]I hope anyone interested in JMLC horns read the last four links, where Jean-Michell writes about his reasoning for his horn profile.[/quote]
Yes, Jan, tanks it was interesting. Unfortunately the words means little in ...
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Kids, do not let kids to subscribe the popular audio-freakish myths of the records spinning people about “the extraordinary beauty” of the Denon cartridges. Yes, the myth has some reasons: many more expensive cartridges are bad, very bad for th...
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Well, when we are talking about Cogent we need clearly differentiate two things: the Cogent’s drivers and the Cogent’s installation. The problem is that since Cogent’s drivers are something so called “compression drivers” then their performance might...
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There is a US company “Acoustic Horn Company” somewhere in ... , that makes, as I understand, only metal conical horns. The company, owner Bill Woods presents his motto as “Horns based on the quality and lost engineering of the past”. I al...
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Sucks! I made today my conical prototype and loaded it with S2 band-crossed at 500Hz and 900Hz. Pretty much wherever I placed this horn except directly above the tweeters it screwed imaging. To mount it directly above the tweeters does not look...
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I find this project so fascinating. I find it particularly interesting because one of my first experiences of good sound involved a field coil driver. Many years ago my grandfather bought an old hammond chord organ(predates the b3 and other...
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Some thinking about Romy's Injection Channel (see the following thread) : GoodSoundClub - Romy the Cat's Audio Site - The "Macondo Ultimate" MK-XXVII, Revision 432 ... brings me to a question that I've had a for quite some time: When aligning a "norm...
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The 4 sections are done. The last one is not glued yet. The reason what we assemble the section and then glue them is because the section have complex 3D geometry with all 4 sides are under specific arc. Yes, that is right – even the side of the horn...
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I am currently planning high-WAF speakers for my sister which have to stand in the corners on the floor. Asking for small corner horns I was told the EV Baronet could be a solution. Simulating it with roughly estimated dimensions I found that the FR ...
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I was waked up this nigh with very load sound of thunder and lighting. The rain was gashing and I went close the left opened deck doors from last evening. Suddenly, totally out of blue, and idea come to me – why do not use the idea of Carlson Enclosu...
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It looks like the Cogent boys came up with a new design. It is good that they are keep looking, even thogh they unfortunately are restricted with their desire to stretch the use of their drivers over too wide bandwidth….
The new Cogent setup lo...
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I, after being sick and tired form the Denon 102 misery, got the Ortofon Mono needle. I was under impression that Ortofon Mono was true mono cartridge with one coil. However, when I opened it up to mount it’s insert on my “Chernobyl Spinnaker” tonear...
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