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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Oddly the seller has removed the images of the wood horns as well as the mid bass compression drivers. They are still illustrated in the plans. Great looking horns. Perhaps he sold them. They where 150 to 5k drivers. I think Jeffery Jackson probably ...
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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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I would like to pass some summarizing observations and some generalizations regarding the entire “Water Drop” project.
THE IDEA
The idea of trying to find a tweeter to compliment Macondo was a good idea. Many of you know that I was proudly declari...
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Eduardo,
Thanks for your thoughts and illustrations. I also do not feel that loosely-suspended very small metal cone might be a right solution for midbass. To develop LF you need pressure, pressure is surface by exertion – there is nothing els...
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Romy, I was asking questions here, and @ RMAF because I'm trying to gather enough information to build compression drivers. At my day job I am a prototype machinist at Los Alamos National Lab. I don't plan on going into production, j...
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ScottL,It looks like the two pics you posted are of different systems, the first being slot loaded PP, and the second (full-system) showing a "traditional" IB. You also seem to be confirming my intuitive hunch of potential sound benefits and horn ma...
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I was listening last night a string quartet rehearsal. The play was for the most part justifiably non-so-glorious and I was thinking about my little audio things. For sure our upper MF drivers nowhere near where they need to be. There is too much...
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Terry,
I did found that PP amps were good to drive BAD compression drivers (with ceramic magnets). The irony was that the better amps to drive the ceramic magnet were not just the PP amps but the solid state PP amps. Do not ask me why – I do not kno...
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[quote user="Paul S"]Now I am wondering: If we go to such trouble to have transformers wound for our particular applications, maybe we could just as well be winding our narrow band voice coils and welding them to our/their own output tubes.[/qu...
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[quote
user="xandcg"]I was thinking ESD drivers may have a true advantage
over ALE/GOTO/Others (apparently they actually know how their drivers work) if
that allow to someone design the horn exactly the way he/she want, and later
order the driver...
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For the person who very easy toss comments like “utter nonsense”, BS and “does not make sense” you are very uninformed. If you stop position yourself as an ignorant teenager who “knows everything” then you have chance to learn something. The Car Talk...
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I think the most interning would be to learn what kind MF and upperbass drivers were used, particularly the MF. I hope they are not the German BMS drivers as it would be a major turn off. It looks like 2” throat, would it be possible that French folk...
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[quote user="oxric"]
Well Jessie, it looks like your wish has come true. The Vitavox site went live at 9 a.m. this morning. It has very interesting implications for the compression drivers landscape in that it suddenly makes buying a hi...
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[quote user="haralanov"] Congratulations you have found and use this principle, otherwise the back chamber acts like pneumatic brake for the lower working range of the diaphragm! [/quote] Actually it shall act as “pneumatic brake” in a compression dr...
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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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[quote user="jessie.dazzle"] Romy wrote:"...Let pretend that you play a normal some kind of horn with a lot of air in it. The air drives the driver impedance down..."I'd like to understand this; correct me if I'm wrong:As soon as the membrane of a ho...
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[quote user="horny"] Those used to vintage gear might find it laughable…[/quote]
Well, do not be under impression that vintage drivers are an assurance of some kind of quality. They are not; in fact in most of the case the opposite is true. I always...
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Hi,I am slowly building my own Macondo. I understand why the injection channel is there. It brings some kind of softness that the compression drivers lack. I am using a 12" JBL midbass driver (~100dB sensitivity) in a 50L single driver Marshall cabin...
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Thanks Romy,
I would have thanked you sooner but I had the day OFF of my day job today and had no time to post until now.
*cracking up*
I had a feeling there was no easy answer, wasn't sure if I was missing something, had scoured posts for a whi...
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Somebody from AA was asking about electromagnet. The subject pup up here from time to time but this time Bruce Edgar uploaded an interesting comment. Bruce is not a typical AA Moron and if he says “inaccurate things” then it is not due to ignoran...
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Tweeters Alignment - what is a bitchy subject! I was mildly complaining about it for years and during the last few weeks I complain about my own tweeters - primary because the very same issues of the imperfect alignment. This there is a derivation of...
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Well, whatever you do with your loudspeakers of with you whole playback system is kind of irrelevant if your drivers are not right. In my view the drivers are the very much heart of playback but in case of High-Efficiency and particularly horn-loaded...
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Hello again, Romy.. let me see if I can clear some of this up....
first, you are indeed correct on your horn thoughts.. but some clarification is in order...
Ming Su is the importer of GOTO to the USA... Goto Japan only ships horns from flar...
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[quote user="Romy the Cat"]I was thinking about the throat of my hypothetic midbass horn. This is complex, controversial and it has pretty much no answer, at least in the formeat I ask it. I will share my thoughts with you.
Let pretend that I...
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All that I will be saying are the subject of my own experience with horns and my personal observations. You shouldn’t agree and most likely you will not. That is fine with me. I have lot of reasons behind what I will be saying and opened for some cla...
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LOW FREQUENCY DIRECT RADIATOR DRIVERS
411A –18Hz, 93dB, sealed box414A - 99dB, 30Hz, Alnico, cloth416B – Alnico, 97dB, 25Hz, cloth416C – 16” version of above with Ferrite416Z - 12" version417C – 100dB, 69Hz, Alnico, 1.3T, 12”418B – 100dB, 55Hz, Alni...
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Here is my proposal for an ideal horn system. The concept derives from the really of the horns as I know them, the available park of the drivers, the drivers’ real capacity and from… everything else that I might comment upon if you would not figure o...
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Romy, I am not clear from re-reading how low you plan to go with a 4" to 5 " dynamic driver, like you mentioned a few posts back. I thought I read that you planned to go as low as 70 Hz with this channel, which confused me when ...
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I always thought there are only two basically interesting approaches to the sound reproduction:- eliminating the room effect as much as possible with a controlled disperssion of a forward firing horn- or completely include room (a bogus idea, I know)...
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