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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hi Romy, Splendid work - much appreciated research this!I know this is totally premature, but if you do find that you prefer the S2 as the flux is increased and hit a current limit for the coil, then you *might* get a flux benefit by using a lower ca...
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This is very interesting subject that gave me a lot of head ache until I figured the things out.
It is known that I have aversion to ground that comes with mains. It is very dirty, so a few years back I drove 15 feet copper poll in pretreated backya...
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Thank you for that interesting and keen observation on the S2, I have never had one to examine. Shockingly the only other driver I have seen wind coil on dome is the Peavey 22A! (driver in pic note salt interesting shaker phase plug)At one point I re...
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Brad You are correct the model 19 does have the 802-g, but all of the 802 series drivers 802-b,c,d all outperform the 802-g. I have had everyone of them and have done real world tests with them with every type of horn and the plastic phase plug i...
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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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R,
Little suggestion should all else fail - you could have a rudimentary phase plug machined that would give you the same (or similar) compression ratio as the original but only one annular exit path. This might preserve the driver characteristics a...
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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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IMHO one of these drivers that make you listen to the music at first, but something isn't quite "right". Put it on a - big - open baffle and cut at 200 and use maybe up to 2500Hz. Problematic with female voices, like opera and so on. It distorts quit...
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Romy,,I agree with most of what you say....But good audio engineering comes in small tiny increments,,when JBL introdiced the coherent phase plug..I said so what?? then the moved the position of the magnet,,I said so what??But they were getting ready...
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[quote user="Bud"]The sine wave actually looks quite good no hint of saturation, clipping or wave deformity. Only a single trace, rather than a twisted rope. I suspect that when placed under a load much of the "broken" curve will smooth out. I would ...
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Hm, SGSG-37FRP, Driver frequency band: 400Hz - 10kHz, 18,500 gauss SG-370, Driver frequency band: 400Hz - 18kHz, 23,000 gauss SG-370DX, Driver frequency band: 400Hz - 20kHz, 24,000 gauss Inversing, they build up magnetic density and extend HF. I...
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Angelo, I do not think this site add anything applied to the subject. I personally do not feel that upper bass horns require any phase plugs; quite in contrary they are dreadful for upper bass horns. When a straight horn employed then the horn does n...
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Don't worry Romy, I know exactly what you mean. I tend to discount the opinion of anyone who raves about a system's ability to play back patricia barber. Speaking of which, if I were in her shoes, bunions and corns aside, I'd be mildly...
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Well, what I told you that I am a Moron and you did not believe me then you were fools. Here is a case to point. This week I deeded to connect my Holrick mechanical motor-generator in use. I did not mean to listen the sound of it. My objectives were ...
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thanks for the help, romy, this is im8, it works, which is good.
This is what I think of m4. taken from website I made, when I could not post here. I will keep it up, as info for this driver is very rare, not much out there about it.Personall...
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thanks I have a few questions to ask if you do not mind:
1) Did you experiment with surface of the horns and a negative contribution of smooth surface to Sound?Smooth surface are fine don't waste my time on a trival matters.
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Be, this is an interesting thinking and if you are correct and if there is an opening from front chamber into magnet assembly then the volume of the magnet chamber would certainly affect the sound of the driver. The point that I argue is that suc...
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[quote user="Marc HENRY"]La Grande Castine will not be as expensive as Cessaro Gamma.
i am sorry but i cannot answer to all questions, for several reasons you can understand.we have tested many drivers since the early prototype of La Grande Ca...
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So in an effort to learn something about the way the 288 and S2 sound the way they do, what do you suppose the mechanical differences in the construction of each driver that causes the differences in sound as they look so similar physically?
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[quote user="Vasyachkin"]
compression drivers are the way to go as far as i am concerned but obviously performance depends on the horn lens.
my beef with ET-703 is that i don't understand its horn or whatever it is. if not an explana...
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[quote user="Lx_"]The effects on sound can be described either globally or in details. Globally the music flows less, the sense of musical phrasing is diminished, sound tends to tighten, feel constricted, dynamics are also reduced. When trying to...
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Yes, Peter,
I know that in the Steinberg WaveLab use only Bob Katz’ metering system, still I thought that if they are cooperate then Katz’ Ambience Recovery might be available as a standalone plug-in. It is kind of suspiring that Mr. Katz was able t...
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To get Community M4 to a certain acceptable musical level, take these steps.
Step 1-
If you will use this driver with the 4 inch exit as is , at the very least of first step, take away the phase plug, and line the inside...
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[quote user="Marc HENRY"]hi all,
thanks for your interest !
yes the frame is curved, HF and MF are //
yes there is a phase plug in the bass horn. This cover 80-300Hz.
there is a separate infra-bass section, covering 20-80Hz.
images of the bass p...
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The first two prototypes is actually one build, the only difference being the volume/area of the chamber. (Perhaps I could have chosen more proper words in describing this part of the horn. By 'volume/area chamber', I'm specifically refer...
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I need to say that I do not like the Netherland-based company BD-Design. They do in my view non interesting products and their owner Bert, despite of being a more or less knowledgeable audio fellow have a tendency to patronize incredibly filthy audio...
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Haralanov, I've spun this thread off the "Speakers for a Powerful SET" thread, as you suggested. I took a couple of pictures, but I can't figure out how to upload them, just yet. I'm also not sure what you could see from the outside, anyway.As for th...
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[quote user="clarkjohnsen"] Folks, in case you care to learn the truth of the matter, AC Polarity is the subject of Chapter 7.5, pages 63-66. Its connection to acoustic polarity is established there too. That Romy should so boldly assert otherwise, l...
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My main 6 speakers are modified Edgar horns with 105 dB/ watt sensitivity, and the others are overhead emotive speakers with standard 90 dB/ watt sensitivity. There are two JL self powered f12 subs, and 4 self built subs with a sherbourn five channel...
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Romy!Put on an engineer hat!
Time-aligned is an impossible task from my point of view. How can one perfectly time align different drivers? Align to what precision? mm, inch, cm or ft? 5%, 10%, 30% time align? Align to the tip of the cone or...
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