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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="cdwitmer"] If Very Knowledgeable Guy ever had an opportunity to do a listening comparison between a Feastrex Type II field coil driver, which has a Fe main yoke with a Fe49–Co49–V2 pole piece and a Fe49–Co49–V2 top plate, and a Feastrex ...
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I could not agree more. Above a certain price point, another thing that should be standard procedure is what Lamm has been doing since day one; and that is to establish a file for each component made, recording whenever possible, its history of owne...
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[quote user="haralanov"] Also instead of using electrical tape, try to seal the back of the driver with a 2mm thick sheet of microperforated tonewood and then glue a leather layer over it. Then you could also pierce multiple tiny holes in the leather...
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[quote user="Romy the Cat"] rowuk wrote: Major chords create sidebands that are harmonically related to the chord - there is little dissonance. Minor chords create sidebands that are NOT harmonically related. H, I did not know it. That is VERY inter...
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Yes, Gregm is right we have no idea what is behind the bottom “bulge” and therefore any speculation and accusation are “correct”. Nevertheless, from what I have tried, if I “design” this horn and had a desire for whatever reasons to preserve the “bul...
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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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A friend stopped by tonight when I was test-listening my midbass horn. He got freaked out from the size of the thing. I played for him some Gerhard Oppelt’s organ recordings. He told me that I am crazy, like I do not know it myself. Anyhow, he made a...
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The sound wavelength must be much longer than the 6". How low the 15" goes? BTW, has anyone compared old AK151 vs the new production? The old ones seem impossible to find (new production being in turn horribly expensive).
...
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[quote user="jessie.dazzle"]I could not agree more. Above a certain price point, another thing that should be standard procedure is what Lamm has been doing since day one; and that is to establish a file for each component made, recording whenever p...
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[quote user="Romy the Cat"] Make an experiment, and I will simplify the case quite assertively. Take a typical compression driver, cross it at 800Hz, second order and load it into a proper contemporary horn (Tratrix or JMLC) of 300Hz. Listen that hor...
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[quote user="be"]The paradox of the orchestra sound would be resolved if we asume that the audience (in the good seats) mostly hear the reflected sound, primarily from the wall behind the stage and that the players at the front follow the visual lead...
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Yes, Jessie, thanks for the idea.
I was looking over all of them and currently set my eyes on the Sherlin single single-axis 8" manual slide:
http://www.sherlineipd.com/manslide.htm
It should be Om and it is in black. I would need to attach a hor...
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It seems that I do agree with you about the sound of compression driver midbass.. at least from what I have heard in my own room.. I have heard the big ALE drivers you mention on a bent steel horn similar to what ALE builds, but of the owner's design...
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I recently completed some upper bass horns which I'm now enjoying very much. Sadly I lack the skills of someone like Jessie so my efforts are crude in comparison, but they are working well for me which is the main thing.I already had some old frontlo...
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It's Art Dudley's turn, now:
http://www.stereophile.com/content/skin-deep
"I went to an audio show at which the average product price was astonishing—not just high, in the sense that a BMW is priced higher than a Subaru, but...
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Without completely understanding the post, I listened to all the samples (which by the way, will play immediately without doing anything if you have a mac...oops!). I first ran the files through my main system (there is a laptop + DAC associated with...
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Arlequen,
Thank for the suggestion, the shape-wise it is exactly what I am looking for. I have seen a number of similar lights but they are LED lights. I kind of automatically discard the led lights as I though then are not as powerful and not...
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.... in home systems for Room correction and general system EQFolks,This is from my own Yahoo group, but may be of interest here....Since writing this I have in fact changed my speakers to dipoles and do not currently use a PADEQ (it will return thou...
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Klaus,Yes, I assumed that you had found the spec sheet; I only included the link for the convenience of others following the thread.Klaus wrote : "...whats wrong with 9,9"? its rougly 55% of sd? you think, 43" is too short for a 62hz h...
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on Friday I will test CEC TL0X with MAcbook Pro/Berkeley USB to SPDIF Converter.The Berkeley Alpha USB use the Wavelength Streamlength asynchronous code. Mr.Gordon Rankin programmed these codes and sold the patent to some company like Ayre, Berkeley,...
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Hi all
Yes, the thing with midbass/upperbass horns , as Romy states, is that those horns are usually built to be too short. You might actually be better off using the driver in a sealed box.
For example, look at the size of a typical upper midra...
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Gordon Rankin of Wavelength Audio did a series of one-stage DHTs with a step-up transformer input about ten years ago. I think they were called the Mercury series. By all accounts, they sounded good, but of course had limited gain, not much power and...
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[quote user="CO"]Romy, perhaps you can give your 7th a photographic based analogy which you seek improvement on.
Just don't say photo stitching ...
Wavelength dependent level /hue /sat adjustment ? (gamma + black and white point)This will be record...
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[quote user="scooter"]Gentlemen:
...*Regarding playback, I misspoke in my original post of an "Audiophile music server." Upon further reflection, this is an oxymoron, if not a moronic phrase. I think it is highly unlikely that a dedicated audiop...
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[quote user="jessie.dazzle"] I don't have a problem with what Lamm has done in offering the ML3 (ignoring the price)... If I have a problem it is more related to how the product is being represented. Representations aside, depending on how it sounds,...
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My COVID-19 brain fog has finally lifted. I have been using HORNRESP as the gold standard for horn design. Upon reflection I forgot that we ultimately listen to the sound produced and not the beautiful computer simulated SPL profile. So I ...
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It is not about Dynamic Range per say but about dymick differences that I feel and that I care with good ULF he effect of rising of acoustic and tonal pressure is instant, very soft but absolutely instantaneous. Live music has feel like literally...
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[quote user="tuga"]Hello,
I have owned a TDA1543 based Kusonoki style (passive I/V, digital filterless, non oversampling) DAC for almost two years.
You can have a look at the measurements here.
I find that this kind of implementation (Kusonoki...
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[quote user="Romy the Cat"]Even though I do understand that advantages to run dedicated operation system but it do not automatically implies that the result will be better.[/quote]No, not automatically. But I believe using a minimalist open source op...
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I think clearing this up this may be of benefit to other users who are building multi-way horns.
Let's say I've got two horns mounted on a frame. There's a high horn
above and a mid horn below and they are physically time aligned, meaning
th...
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