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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Romy the Cat"]
BTW, I was not kidding about the dual-concentric 8” Fane. They did make a version of Studio 8M with a tweeter in the middle. I have it sitting in my driver storage…Another BTW: the tractrix curve was not introduced by Br...
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Hi everybody, after reading RomytheCat's Macondo Setup I am very impressed ( phantastic music room ...) . Presently I have no working horns ( they are boxed), just questions.
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In Poland we have another young company which one start to build horns. On this moment they have only one model- 420hz tractrix, in near futhure there will by 150 hz. but they can build whatever You want in 3 weeks period. This 420hz is homogeneous r...
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[quote user="Romy the Cat"]
BTW, I was not kidding about the dual-concentric 8” Fane. They did make a version of Studio 8M with a tweeter in the middle. I have it sitting in my driver storage…Another BTW: the tractrix curve was not introduced by Br...
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[quote user="Blaukopf"] First, Romy describes his horns as spherical. Later he names them tractrix. Are some of the profiles of the spherical wave profile? [/quote]
Yes, they are spherical, wish means not rectangular. ...
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Hello BE,Quotes from BE in blue :A tractrix and a exponential horn was compared in a AES paper sometime 1950-1970, I dont remember when exactly.
Does anyone know where I might get a look at this paper?The two round and straight horns where mad...
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I can recommend Attila from Hungary ; fast , professional and reasonable . He advertises on AA classifieds : http://www.audioasylumtrader.com/ca/listing/Speakers-Horns-Parts-Stands/Manufacture/tractrix-le-cleac-39-h-spherical...../Wooden-horns-until-...
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There is a German company “Stereo Lab” somewhere in… Germany, that makes tractrix horns. I do not know if they do custom horns or sell the precut prodacts. I do not know also the materials and the throats that they can accommodate. However, they look...
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[quote user="Dominic"]Hey, Rom, could you elaborate on the idea of a tractrix being "less intricate"? Seems like an interesting idea, but i don't really know what you mean.[/quote]I can talk a lot about it but to in short: Tractrix has maximum gain a...
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My current speakers are Edgarhorns with the straight 80hz upper-bass shell. The bass never sounded correct to me. The problems with Edgar's mid-bass are well documented at this site and elsewhere. I tried some simple modifications to the crossover...
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Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn sound.The improvemen...
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[quote user="ulf"]Let me tell you a bit about how an why we designed the midbass horns the way we did.A few years ago we discovered the tractrix horn for MF use. It was really the most important improvement so far. No more honking exponential horn so...
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Dear Malinowski,
Here are the input data used in the HornResp simulation for the tractrix midbass.This is a 117cm long tractrix horn with the TD-1201. Throat area 84 cm2, mouth 10000cm2 with 5,6 liters back cavity.Ang: 1Pi; FTA 89,80; S1 84;...
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Adrian, I had Edgarhorns that have evolved since I bought them in 2005. In my current set-up, nothing remains of the original Edgarhorns as conceived by Bruce, other than the speaker system remains front loaded horns. I noticed the same sense of he...
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Romy wrote:For Vitavox S2 to use Tractrix 600Hz with 1.5KHz filter is a bit too close in my view unless you stay with second order filter. Would you elaborate further about your warning? I'm very interested in this application.I think you use the S2...
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[quote user="Romy the Cat"]
Anyhow, it is interesting how the new 25 users that get those Studio 8M will use them. I wish something “new” would derive from all of it…[/quote]Speaking only for myself, I am planning to use the Fane 8M in a pair of 11...
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[quote user="Romy the Cat"]
oxric wrote:And yes I'm perfectly aware of the vertical problems of having Lecleach profiles with a multi-way system and none of the horns I have ordered are LeCleach - they are all tractrix. I did some comparisons with...
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Hello Romy and everyone, I am going to order a pair of 400Hz/1" tractrix horns from http://www.stereo-lab.de/tractrix.html to replace/compare with a pair of 500Hz TAD-like square mouth horns. These are to be used initially with the drivers that ...
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It should be possible to find it hidden away in a technical universitys storage room if they have the AES papers. I could not find it on there website, probably they think it is obsolete.The distortion in a horn is generated by two mechanisms: 1. By ...
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Hi Jessie.I haven't built anything like the project you are attempting although I have thought about such things. Sadly I don't have the space either! i'd definitely be interested in coming to hear it when its completed & working satisfacto...
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(Note: I've neither seen nor heard these speakers)
Cessaro ALPHA:
TAD TD-4001 2" driver on tractrix horn with 56cm bell (approximately 250Hz). TAD claims response from 600-20KHz. Given that the midbass is essentially a direct radiator (theref...
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Romy,If making a Tractrix Horn to cover between 100Hz & 1000Hz do you have to choose an Fc or mouth size that equates to 50 Hz? I've often read, and don't know if its true, that tractrix horns actually need to have their Fc an octave lower t...
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I found the Silbatone electronics was somewhere between the neutral sounding electronics Cessaro used and the super-warm electronics at the Anima room. About going away from tractrix: The Anima horn with the little paper cone driver looked more like ...
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I am crossing around 160hz, which is half octave above my horns limit as it is a 110hz tractrix horn. The horn is 1 metere in diameter in its mouth (this is dictated by the cf and the tractrix curve). Anyway, here is my group delay....
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Hi Romy,I do not know how much experimenting you have done running a compression driver with no LP filter through your 250Hz tractrix. However, in consideration of a given driver employed, irrespective of adjacent channels and by your various criteri...
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[quote user="Kcct82"] Hey guys, I bought the Goto 505TT with S150 horn brand new over 2 years ago. Guess what? I'd still be in sonic shit if I followed the 200-1000hz "recommendation". The 505TT does not perform well below 400hz and when I final...
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[quote user="be"]I shold make it clearer:The Goto was used in a Goto 150Hz horn, crossed at 180Hz.I guess that is a proper implementation for Goto.The Fane was in a 140Hz tractrix horn with a 10cm throat and a not optimised (to large ) back chamber, ...
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Here is an image depicting the radiation pattern of the HF for a midbass with and without phase plug. The dotted line represents the HF output. This is not a measured response!Here are a couple of pictures that may be amuzing. My girlfriend and the s...
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Thanks for your quick reply. I have been to assistance audio`s website, however was unable to find such model, but is possible they just disassembled the tweeter or whatever.This is really interesting news, about their violin reproduction, me too wou...
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Hi Ronnie, There are a few things that could be causing the alien sounds you site. One, of course, could be certain frequency nodes being excited by room reflections. As long as your room is reasonably dampened, this would not...
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