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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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All below is written by Thomas Dunker
Yeah, "sound consistent independent of signal level" is a very precise way to sum up my whole speaker philosophy. Anything that is assumed to be constant, but which actually changes with signal dynamics is what ...
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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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Yes, it turned out to be the emails from GOTO importer. I am not completely understood if the horn at the picture above is an official GOTO product. The Ming Su said that the horn was build locally by Jeffrey Jackson with the support of GOTO but then...
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[quote user="serenechaos"] "I think the ultimate length of the upperbass horn is 3”- 4” throat. With longer horn it would be very complicated to time-align it as the horn will mask out the MF driver."
Is this also why you use tractrix curve f...
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Dresden,
So the first two could actually be just one actual build, with alternate rear chambers? Wouldn't you change the throat size, as well as the compression chamber size? Then arrive at your "optimized" compound horn design. Then yo...
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Actually if that horn would not be bending atop, go for another couple feet vertically, consequentially has a smaller throat and of course has a strong back chamber then it would be a very good J-horn (presumably that the walls and joints are not res...
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I liked your previous post . A week ago I repaired old Telefunken tube radio (Single EL84 with array of alnico speakers ) with FM band and I'm listening to classical public radio for whole week. Not even once I had desire to turn on "big" system I'm ...
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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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[quote user="Paul S"] I never managed to come up with a horn that did not sound like a horn… [/quote]
As many times I heard similar comments as many times I feel that people rather demonstrate own foolishness on the subject then express a sane...
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This is an article from Thomas Dunker's site (available in my Links Section) and presumably written by him. Although I slightly disagree with some of the statements he made about the horns “imaging” and some others but generally it is very good...
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First let me say I am NOT trying to promote the Synergy horn. I just think it is very intresting to look at and to think about.Ideal loading only occurs at a singular frequency within any horn. This ideal loading point is where the length is 1/2 a wa...
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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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I just wish before I start my project I read a few detail descriptions of the similar projects. Unfortunately they do not exist and I well understand that my project is in away an exemplary for the horn-minded people. All midbass horn are different a...
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Novigera, let's ignore any issues of sound quality first. A horn loads its drivers and increases efficiency only at certain frequencies. The frequencies that are more efficient are based on length, taper and size of the mouth. That means that it does...
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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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I have received some questions and criticism about tapped horns. In order to spread a better understand of tapped horns, I’ll restate the questions and try to answer them.
1.) The mouth of the tapped horn is too small to be useful.
Answer: ...
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A site visitor pointed me out the I never made an intended write up about the David Haigner horns. I just forgot about them… OK, let analyze David’s claims and his Alphahorn design. I would say right the way that I do not like the Alphahorn’s id...
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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="Romy the Cat"]
RF at Ona wrote:Personally, I think it debatable whether the mouth edge should be free or attached as there are desirable aspects to both approaches. If attached, it need not be attached with great pressure. Robert, ca...
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[quote user="nl"] Within that horn-loaded range, the 210/515 type combo does reasonably well, and produces rather more inspirational midbass than most direct-radiator type strategies. There is a reason why these designs persisted for roughly forty ye...
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At recent Nord-West trade show Jeffrey Jackson, the guy who runs Experience Music site, demonstrated his new horn Installation. I know little about it and would like to make some comments about what is feel is obvious from the image.
It is 5-ways ...
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Steve Schell pointed to Bill Woods’ site aka RCAfan.
http://www.acoustichorn.com/
I do not know the guy but the site looks attractive. Some of his old large horns are interesting as so on… however, what make me to wonder is the horns that Bill Woo...
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There is a popular myth that all horn people in one way or another subscribe to. They believe that reflections from higher frequency horns off the bodies of lower frequency horns is unavoidable destructive price to pay for horns time aliment.
This ...
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Herman,
What you describe is fine. Over the course of last years I had a number of people who report identical things to what you do. Even if you change volume of back chamber and move resonance frequency then sound will change but it most lik...
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Dominik, Jessie is right - it is irrelevant the precession of your profile if you horn does not go to high into HF. The LF gain of upperbass horn happens in the first half of horn anyhow. I do not insists that I am right but I have a hypothesis that ...
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[quote user="skushino"] Edgarhorns weren't an obvious choice. Many horns never worked for me. The Avantgardes left me cold. So did the single-driver crowd (I just don't get it....), Altec VOTs, PA systems, etc. But there were some systems th...
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... or wondering if it has any new insight into horn design.I did not read the book but I find funny that person who presumably do not “believe” in horn write a review about the presumably horn related book. It would be similar to ask a blind person ...
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[quote user="Romy the Cat"] To my huge surprise and pleasure my midbass horn has absolutely no honk. I heard bass honk in ANY, even the best midbass horns that I heard (BTW, some honk does not bothers me and I even consider it desirable). [/quote] T...
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[quote user="noviygera"] Question, Romy:Why do you suggest to add the extension on the back, not the front, as B. Edgar suggested. He specifically commented that the MOUTH area is too small and said the throat size was OK?[/quote] Herman, the mouth a...
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