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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="jessie.dazzle"] For a lot of reasons, I'd vote for an alternate placement. You've got that basement, so why not use it as a rear chamber? You might be able to use the volume "as is", without building a proper rear chamber. In this ca...
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[quote user="Paul S"]Andy, I will say right away that I am not at all set up to "exploit" online music, but this comes across to me as "clean" and "noise free", with some nice spacial effects, basically devoid of harmonics, and not much in...
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Jessie, we keep meeting at the same intersection. Like I said before, I agree that direct radiators suck, for all the reasons you cited. But if what you say about horns is strictly and completely true, then does it not follow in spades at ever lower...
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One thing to bear in mind with the bass horn delay - I thank Tom Danley for explaining all this a while ago - if I understand it right, a small direct radiator (ie small in relation to the wavelength - which will obviously be the case with ...
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[quote user="haralanov"] Your response is a very good illustration of how you redirect attention away from the actual discussing subject and point it to a completely different direction that has absolutely no relation to that subject. You asked me wh...
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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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Interesting observations and categories. I propose a Bizarro/Direct Radiator mirror using negative numbers, except I have a hard time thinking of anything beyond -3.5, and (I have taken the liberty...) some fractional equivalents might be useful.I be...
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[quote user="haralanov"]Come ooon, comparison between the radiating area of direct radiator vs. the area of horn’s mouth is too amateurish even for some diyaudio.com level simpletons… It is as naïve as saying Leonardo’s Mona Lisa is simply 100 grams ...
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[quote user="Romy the Cat"]It is possible to throw fantastic imaging presentation by using direct radiator but did you pay attention that many playbacks do not do it? What does it mean? It means that an ability of playback to make imaging interning i...
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Yes, Anthony, any horn by nature has what I call horn arc. At the bottom of the range the channel boost output, then the gain slowly decay and become almost like a direct radiator and then the output begin to roll off at HF by horn until the driver r...
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I used to have Edgar 80hz straight horns and this was my only experience with short midbass horns. I did not like them in my system and sold them. Lately, I have been wondering about these designs in general and is there such a thing as a good soundi...
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I use a direct radiator monopole for below 650Hz, this is OK and I have it working well. I think that I want to control directivity so that I can stop floor/ceiling comb filtering which gives me problems of +/-6dB and more. Now I am using extra monop...
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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="haralanov"] I think you have found phenomenally good sounding upper bass driver and you are going to build a dedicated quasi-bassreflex channel using it to fill the gap between your line arrays and the upperbass horns... [/quote]
Intere...
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LOTs of time pretty much wasted lately, looking at "HE" direct-radiator drivers that are actually only HE at their uppermost frequencies, with diving responses and large-to-huge power "ratings" that allow the "pros" to simply turn up the heat to...
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[quote user="Romy the Cat"]The biggest problem that usually people face when they listen the middbas horn is that people tend to make the middbas horns too short. In the short horn the driver shot right through the horn and the LF go not “get loaded”...
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In the thread “Exceptional loudspeakers drivers” Paul S. wrote:"LOTs of time pretty much wasted lately, looking at "HE" direct-radiator drivers that are actually only HE at their uppermost frequencies, with diving responses and large-to-hu...
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Romy wrote:"...In regular audio we accustom that any loud midbass tone get converted to sort of speed bump. You run a high speed, hit the bump and have your “point of no return”, what you fly in air and you have a generic expectations that the landin...
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You have identified the tricky parts -the transistion between the front and back horn as well as the throat of the front tractrix horn. A one to one throat with the front horn works best with my coaxials and a short 1.25" straight 'ring' ...
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[quote user="haralanov"] The horns, even the fast opening ones are physically too deep for their mouth’s size, and this leads to a psychoacoustic illusion that the sound images are arrested at the bottom of the horn and from there they scream they wa...
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[quote user="eduardo"]
YL 75000 has heavy phase plug indeed , rca style (see sketch) while 1250 ( I never had one) gets a fixed metal dome equivalent to spherical piece on 75000 and rca plugs without conical shape pointing the exit of throat. Ir...
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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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[quote user="haralanov"] Yes, you are right. Power – you have almost unlimited power. Dynamics – you have as much dynamics as you want. But there are a lot of associated problems with that kind of dynamics. The following illustration is taken by ...
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[quote user="Romy the Cat"]
Yes. I’m exiting to see how the new horn I shaping up. Still I do not think that it is about second orders. Obviously in context of 5 channels system, the more channels one gets then less room between them. I still feel...
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YL 75000 has heavy phase plug indeed , rca style (see sketch) while 1250 ( I never had one) gets a fixed metal dome equivalent to spherical piece on 75000 and rca plugs without conical shape pointing the exit of throat. Ironi...
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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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Hello all!Some people call omnidirectional spekers "Hallsoßenwerfer" (reverb sauce throwers), some people even accept price and sensitivity of an MBL 101. While I find the MBL too diffuse, I still find there is something special about a speaker being...
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[quote user="Markus"]I have recently been thinking about efficiency. Apart from enabling you to use low power amps, is there really any reason why high efficiency is better than low or medium efficiency, all else being equal?[/quote]Fundamentally, al...
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Markus, I speak as a non-commited direct radiator guy when I say that the horn EQ as a raw principle is a very powerful model that theoretically opens the door to the sort of overall efficiency that direct radiators can only dream of. Then I wil...
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The short horns like with the Altec are horns, but being too short and generally with a truncated mouth, they do not eq very much in the “midbass”, rather an octave or two higher. In that case, you might as well use direct radiators. The reason for a...
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