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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Here is a VERY interesting paper http://www.anstendig.org/Stereo.htmlSTEREO: A MISUNDERSTANDINGTHE THEORY, SOUND-SYSTEMS, AND PROBLEMS OF HEARINGThere is a common misconception that the addition of stereophonic sound-reproduction was the necessary, c...
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[quote user="guy sergeant"] I'm sure there are many bad implementations of the 845 and 211. Almost all of the commercially available ones are pretty mediocre. However I have heard good examples of both so I know it can be done. [/quote]
Actually I d...
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[quote user="Romy the Cat"]
Aura made their 1808 driver in 80s and most of the 90s and it was wonderful. It had huge high-temperature neodymium magnet, unique magnet geometry with underhung 4" edgewound aluminum voice coil. It was the only 18-inch...
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Well, I have to admit that I did not listen the whole sound of AC vs. DC filaments yet. I will bring home today my DC lab supply that I use for my electromagnet coil and will give the try. I still at this point am not concerned about the “whole ...
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Amperidian,
Those “evens” that you experienced I your cars are well known to me - the auto sound is very different subject though and I would not mix in into FM thread... The phenomena of car sound has nothing to do with FM in particular, you might...
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I have been thinking recently about the subject of my playback’s sound vs. Live sound and I have to tell you that those thoughts are much more complicated than one might expect. Under normal circumstances it would be foolishness to talk seriously abo...
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[quote user="Paul S"] I heard back from Lamms about the relay pulses. They suggested I bias the amps again and then Lamms went silent when that didn't work. But the problem disappeared when I got around to replacing the 12AX7s that came w...
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Moreart, believe me or not, but I perfectly understand your constructions – they are nothing more than a simple reflection of your own way of thinking about audio and sound - just a pile of glued wooden panels without any audio based motivation behin...
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I see, it looks like they come up with new RIFF64 format that has no 2G limitation. That is good. I never used RIFF64 but I used Sony W64. The W64 was available for a whole with Sound Forge and become available in WaveLab-6. He W64 format was th...
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[quote user="drdna"]Experimenting with the new 2A3 tubes has been a very interesting experience. It has given me insight into more specifically exactly what I am looking for in the stereo sounds, which I associate with the Sound.
The most we can as...
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[quote user="Paul S"]While you are merely being empirical, there are actually plenty of devices that aim to "benefit" the end sound of SS gain by using tubes to "condition" the signal from DACs, etc. Also, there are plenty of commercial widgets ...
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Manisandher wrote :
"...I am convinced that the soundcard/interface is the main cause of the inferior performance of HDD vs. CD..."
Telstar wrote :
"... It is..."
Romy wrote :
"...I disagree....
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Yesterday I visited a local audio guy who bought new speakers and for all intended purposes new amplifiers: I wanted to see what Sound he got. I did not like his Sound I literally did not acknowledge the visit as any audio experience. Very few pe...
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[quote user="Thorsten"]Forgive me for saying so, but since Bishop Berkley and David Hume it should be well clear that there is NOTHING WHATSOEVER that is actually objective, at least as long as we are subject to the limitations of matter and the huma...
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[quote user="kodomo"]I heard the same not just from one but from a few guys for my playback as well! I think it is because of the all encompassing effect and the strength of the stereo image. Most people have never heard that strong of a phantom cent...
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Recently there was probably nothing as low in audio as the BS surrounded Kharma loudspeakers. Each single step Kharma takes is further and further in-depth Kharma into the realm of bogusness. It is not that I find that “Kharma the Manufacturer” or “K...
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This material is courtesy to Mr. Shibazaki, the owner of Sibatech Shop in Tokyo, that sell internationally Japanise Hi-Fi equipment.
http://www.sibatech.co.jp/
I hope that Sibatech people are more decent then our american distrib...
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Well, when we are talking about Cogent we need clearly differentiate two things: the Cogent’s drivers and the Cogent’s installation. The problem is that since Cogent’s drivers are something so called “compression drivers” then their performance might...
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Is this sub-thread OK here, or should it have its own header?The idea of "natural sound" is still facinatinating to me after many years of deconstructing and reconstructing old drivers and gear, trying to figure out what makes what sound a particular...
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[quote user="cv"] I'm enjoying this account of Melquiades upbringing. I must ask though: how are you sure that what you are hearing isn't on the recording? Not that I don't believe you, I just wonder if the stuff has been there all along and undiscov...
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Rick, good question. Probably few people at this forum think seriously about power supplies; you might get more answers on DIY forum. Of course, the only thing we care about is our experiences with the Music, however that happens, which certainly doe...
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Nothing like Musical results to prove audio concepts! Congratulations! As far as I am concerned, that you are getting this from stereo CDs is Icing on The Cake! I hope it holds up and that answers pour forth as you tweek and fiddle with the variables...
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If identical performances the same piano were given in different venues the 'indentation of recreated space' can never be the same as the acoustic properties of the venue are a part of that indentation.When this sound is then reproduced anywhere...
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Audio people constantly make, from my perspective, a big mistake trying positioning their loudspeakers in their listening room. While they do so, they try to make the loudspeakers to perform better in their rooms. However this is quite fatly thing to...
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Jim, what is operational point of the 6E5P, what it drivers (how it coupled) and how do you bias the 5E5P? BTW, the clipping at the bottom is very good, very symmetrical. Try to measure which stage clips first: the driver or the output stage. One m...
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Floobydust, I do not have a lot of experience with listening the 45 of internal construction. I bought a dozen of so 45, all different brands and I will slowly listen them. However, I do not necessarily looking for better tubes but I rather am lookin...
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[quote user="KOTriode"]Romy,I looked at your Melq schematic : http://www.goodsoundclub.com/PDF/Melquiades_SET.pdf regarding the 6E5P bias. Would it be simpler to use two alkaline battery in place of R5 to provide 3V , or 3 Rechargeable for 3.6V ...
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For those seeking some decent compression drivers that don`t cost fortune, I can suggest to try the Eighteen Sound ND1460A compression driver. It has aluminum dome and polyester suspension and 1,4 inch exit throat. Does it sound like S2 ? Probably no...
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[quote user="Joe Roberts"]In accordance with my deeply felt philosophy that one should do with audio whatever makes one happy, I certainly recognize and defend your right to think and do what you please.[/quote] So what is the difference between the...
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[quote user="Romy the Cat"]
Any LF acoustic system has two SPL levels: the SPL of pressure and the SPL of tone.[/quote]Ahhh! Very good Romy. I don't recall you talking about Pressure and Tone SPL before. The tapped horn can be designed any 3 ways....
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