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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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[quote]Also, Jessie, there is another very important point. A construction of your systems should not be a pure DIY efforts or it will be just another stupid DIY project. Your should have none-DIY objectives and use those horns to resolve those none-...
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Reading how you plan to go about making this horn, I offer the following (this first one you probably aready know):Make the outside of the mold in quarters or thirds and hold it together using fabric straps (not bolted flanges)... If you make it...
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I know, I know, I know…
Any person who in one way or other practices horn-loading loudspeakers has a wet dream about bass horns. Here and there people built them. Here and there you can hear the assuring and overconfident statements like: “the...
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The surface of my fiberglass horns is quite rough. The mould was sprayed from a distance with some water based paint - so it all landed in fine globules. Maybe this is too fine a rough texture though. I like the idea of thick artists oil paint…
One ...
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It should be read: "...Alternately you might use hairy wood OR rough plaster surface as Jessie might do with his plaster horns..." Anyhow if you use textured paint then there is an easy was to increase size. When you spray the paint do not spay f...
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Sorry if this is OT - I could start a new thread but my post is inspired by the quote below - [quote user="drdna"]the lathe-work is rough on some of the horns. [/quote]I can't decide whether that's good or bad. I'm slowly working up to getting ...
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Since the greatest differences in audio are among listeners, there is no need to argue whether such things are audible.However: While it no stretch to say from personal experience that such things are audible, it is very much a stretch to s...
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Romy i read some time ago, you said wood horn with a certain porosity on surface is best sounding. I doubt abought that, as i thought the differences of finish ore even material would affect sound in a way no perceivable. today i saw a thr...
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Jessie, at the home page, in the left, within the GoodSoundClub Section there is the “Announcements” item of menu, which will bring you to the thread with the instruction how to upload the images to the site.
Regarding the issues that you are trying...
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[quote user="N-set"]Anthony, I'm sure you realize that air springs and bearings can only isolate from the structure born vibrations. Placing the tubes so close to the speakers you give them a great chance to catch strong airborne vibrations. Or will ...
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[quote user="Romy the Cat"] noviygera wrote:p.s from my experience of having a 500 sq. ft. listening room with 7 ft. ceiling and having two 18" woofers in a infinite baffle configuration, it is not enough to pressurize the room. I am talking about lo...
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How nice would it be if you did not have to re-cut and re-seal the "some kind of sealer" for every adjustment? If the mating surfaces had "pipe grade" interiors and exteriors, you might be able to use silicone-slicked o-rings or similar gaskets f...
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[quote user="Romy the Cat"]The brickish finish does not make me cringe, in fact I do like the idea. I do not feel that it would be some kind of non-truths. There is no truths or non-truths in it. The only a few first feet of the horn will be visi...
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[quote user="unicon"] If I were you I would set up all things so that when the mid bass is in his place i can reconfigure the baffle tightness by using a huge DIY made screwdriver from the opening mouth...or wherever it can be reachable
then ...
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Thanks guys for all the suggestions.Klaus wrote :"...there are a lot of questions, but if one thinks to much, then he will end up like this lynn olson, pages and pages of endless talk and no horns..."Very true, I need to get cracking, but I'm&nb...
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Romy wrote : "...The horns that you made are elegant and graceful but painted in glossy black with that very rough structure I feel they are less attractive. The texture surface is good but I think that the sophistication of the epoxy-sand mix i...
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[quote user="Vasyachkin"] i will give you this much - horn loading ribbons is fundamentally not as advantageous as horn loading dynamic drivers. this is because ribbon mass is already close to airload mass (in theory could even be less) and little ex...
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From the perspective of pumping of atmospheric pressure the ALE bass drivers might be more capable transducers. It or might not be so as well. To get 40Hz at 110dB in 5” it would take some excursion. I am sorry but you can’t bend the law o...
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[quote user="Gargoyle"]My guess is was referring to the pressure levels at the surface of the woofer(s) compared to that of a horn. The sound pressure of a direct radiator has to be much high to achieve a certain SPL at the same distance of a lower p...
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Hi rowuk.Shark skin decreases the formation of vortexes in fluid flows over surfaces and thereby reduces drag.Shark skin resembles fine sand paper and has actually been used as such.Of cource there is a difference between a stady flow around a shark ...
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Hi, Marcus
As I understand it is 15” loaded into 110-150Hz horn, MF compression driver in 350-400Hz horn, Ribbon tweeter and a pair of tapped horns? Looks good.
If it were up to me than I would paint the entire baffle with tweeter and MF i...
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Temporarily seal off the throats from where the driver will mount, stand the horn vertically on its throat and simply fill the cells with paint. Once full, drain the excess back into the paint bucket, by piercing the seal.Alternatively, use a long, t...
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Romy wrote:"... from the perspective of “reading the back side of the midbass speed bump” I would argue that it has nothing to do with horn loading. Look at the notion widely. I would propose the following...""...An abstract ultimate playback system ...
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[quote user="jessie.dazzle"]In this case, below 50Hz, I think el`Ol is right to suggest that you consider using DSP as a permanent solution. The SMS 1 is in theory the silver bullet... You just need to find out if you can live with it long-term. Be...
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This is a quandary that I am thinking about now; feel free to bring your views.
The big two mouths on the top of my room – to cover them with fabric or not?
Here are some coned and pros that are spinning in my mind.
FOR fabric cover:
...
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We mixed textured paint and use color of the room’s wall. In the small test surface it looked fine but inside horn, in the large surface, it looks spectacular. I am even surprised how pleasant it feels; at least I like it a lot. The idea was to use s...
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Audio is a AC event not DC. There is no wind blowing except for poorly designed ports. There is no reason to "optimize" for lowest "drag". The air molecules bump into one another and really do not travel any distance. There are claims of better sound...
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Back in end of 90s, we read articles by Thomas Dunker, Joe Roberts, Bruce Edgar, and many others (some of them were designers and some of them just publicists) who were trying to persuade that horns are some kind of advantageous topology and that...
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[quote user="Romy the Cat"] Scott L wrote: the last time I checked, you were using 6each
@ 10 inch low frequency drivers per side. That's "getting there" but
still not enough to produce an acoustical watt. (which horns CAN do).
I am not sure w...
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