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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Herman, horn dimensions does not described by size of driver but only size of throat. It will be absolutely nothing changed in the horn dimensions if you go from between 10" and 12" driver. Sure you would need a bit larger back side of the horn to ac...
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Thanks, Jorge, but what you propose and what is done at the pictures your posted has nothing to do with Infinite baffle. This configuration rather reminds me the 4th order bandpass. It is popular setting but it is not what I like as the bass coming f...
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My first thought is for a "very dense layer of foam", or maybe very good felt, between two hard, even "slipping surfaces", such as 2X4s or even "5/4" (1" net) or 3/4" net oak boards. This might be a fairly thin sandwich that the entire length of...
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Go buy a load of tennis or racket balls and use them to float the horns. You can vary the number until you get just the right squish. As it is just the edge of the mouth that rests on the attic floor, this will require a some prep work... Here's how ...
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Yes, I bought a few jacks, they are not expensive, I can buy a lot of more. I put them under the floor, assuring that the floor does not “play” anymore but there is one big but in all of it. Those intellectual attacking of the floor’s mode have absol...
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A possible solution for tuning your floor.If you were commited to it it would not be expensive to implement it. Probebrly run it with oil. The piston and bore set up could be about 100mm diameter and about the same high. The whole set up could sit on...
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Romy, Looking at your cartoon again, I wonder if you are showing manufactured trusses inside the horns?If not, what does the shading that looks like trusses mean to show?If so, your carpenters are either very good, very optimistic or very hungry.Are ...
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Yes, the raised-floor-with-vaulted-ceiling rooms are very hard to charge properly. Perhaps you might at this point begin to work on some of the floor sink treatments discussed up this thread?The corner "nook" can be framed in, if need be, with a doo...
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[quote user="Romy the Cat"]
Hm, the Injection channel via Lecleach? The MF via Lecleach? I wonder why people then are complaining about the vertical limitations. Anyhow, closer to the point.
[/quote]My mistake. I should not...
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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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[quote user="ulf"]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 improvement was so clear that A/B testing was not needed. [/quote]
For wha...
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[quote user="cv"]This is but one reason why I'm asking Martin Seddon to make me a pair of 160Hz horns...[/quote]Another problem….
Chris, be carefully with those large 160Hz horn and S2. The guys who make then have no instruments to center the mounti...
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Well, maybe a little cussing first to set the tone. The older SPU's are now well sought after, many will end up in collections at now over inflated prices probably in the Far-East where they are worshipped. I've heard a few older SPU's and even those...
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eyop fellas,Romy wrote: "Here we go! Not we are taking!!! I would not need the S2 tweeter and what it dose now in 400Hz horn is perfectly enough. I would go only for the midbass S2. Something with 6” cellulose diaphragm, low to medium compressi...
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its still expensive, but birch-plywood is not that much cheaper. its around 30-40 €/sqm. the only experience i have with a carbon-foam composite is from making a skateboard for my gf´s son. looks very good, but whats more important, ab...
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The more I looking and thinking about the pool of available idea and properties then more I come to a “ridicules” conclusion that I most likely will not find what I need and what I like. The point is that if I combine my requirement for not suspended...
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Thinking further about what AMR PH-77 is trying to do some ideas come to me…
At my photography life time when we use to shot on color reversal films we included a gray scale. I personally never was huge fun of this practice as the E6 process ...
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Just to answer a couple of question and post some more...
The Mouth changing sectors in the horn, according to the preliminary data posted here, would be as follow:
For the 40 hz horn: 4¨ Throat to 6¨ = 53 cm
...
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Yes, I was thinking of take advantage of high ceilings, feeling the space above with midbass horns. A few days back I found a very interesting building. It is big factory from the beginning of the century converted into many lofts. The building has h...
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I realize this is off topic, but I would like to address the issue:Rackish wrote: "...Recently I asked someone who contributes regularly on your forum and has a system 'similar' to yours to come and listen to his system. He did not answer. I feel e...
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[quote user="N-set"](feel free to re/move this post to the electricity thread)As the power supply I'd regard everything from the power generator in the power plant down to the actual load.Why the power transformer should be the cutting line? I do hea...
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The visual element of the brief shoyld be able to be achieved by doing thing nicely, thought out and with good materials.I am aware of the no parallel walls and this may well be utilised into the design. A simple stud wall, set inside the perimeter w...
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Again, none of the pneumatic methods would work as any pneumatic leak air with time and it will be no access to it after the horns are installed and the walls are finished. Not mention that we have no high to play wit. We will be doing the follo...
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Well, it unquestionably much better, still I am afraid that they are trying to spread one ass across two chairs; I will talk about it in the end. The change from what was before was around the frame and upperbass horn. It looks like the guys are tryi...
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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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[quote user="Paul S"]
The more-driver/more-power method has in fact been used to very good effect in rooms that +/- eat bass. The set-up I remember had about 8 515s per side and LOTS of power that I suppose it did not actually use very often; but...
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I hooked up that old organ yesterday and listened to some stuff i remember listening to through it before. Before i get any further it's the only thing with tube amplification in the house, pp6v6 ~6w, driver is 12" Rola. My observation was that it wa...
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Romy,It is interesting that you say that the problem is well known. I discovered this application in 1972, while trying to come to a solution for the sonic insults being supplied by a pair of Ohm F speakers. I eventually got them to act somewhat as W...
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Hi Romy,Entertaining post, but certainly nothing new to someone who is familliar with your commentary. My personal preference is (ego + intellect and honesty) > (friendliness + naivity), so even though like you mentioned "it's all about me,"...
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[quote user="Dominic"]I'd put your sub horns above your head. There are some big issues with that but you save a lot on concrete engineering, and assuming space remains in future you could apply what you learned from the overhead wood horns to a more...
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