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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Paul,It would be improper for me to write down what I have worked on over almost 40 years in the telcoms business. WRT a CV for example, I have in the past written it all down and the reviewers do not believe it. Eventually, i stopped bothering abo...
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[quote user="Romy the Cat"]Ok, let dive a little bit further into my examination of the subject of Lamm ML3
What is important is to undusted that my view less targets the Lamm ML3 but rather it targets the ML3 as a representative of entire cla...
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While I would agree that modern construction should be much more robust than that of 5-6 decades ago, actual machining and manufacturing costs today are significantly higher than they were back then and there is much less of it going on. Look a...
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[quote user="Paul S"]and dm did say he's tried (and rejected?) several SETs already, in the context of Klipsch Horns.[/quote]No, I didn't say that at all. I said that the were aspects of the 6C33CB's presentation via the Almarro A318B SET, that ...
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[quote user="Romy the Cat"]Hi Romy!
The 515-8GPH were in same scale as the 515G with slightly above 35Hz resonance frequency and 103 sensitivity - a very good candidate for 60Hz horn. The 10” throat? No bolls to go for 9”, how about 8”? ...
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For the past few months, I’ve been looking for a solution to a problem – how to recreate through speakers the same sound that I get through headphones. Why did I embark on this quest? Well although I’m quite happy with my headphones, I miss being...
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Ronnie,
Arranging the driver in a line array is a fierily straight forward thing. Also be advised that the arrays will less likely work across a short wall, and you need to use a long wall. Generally it is imposable to advise anything as any rooms a...
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Here is the link, though I have no idea whose words he is quoting:
http://twogoodears.blogspot.com/2010/02/again-about-duelunds-coherent-audio-pio.html
The caps are $1000 per 630V/1uF. So, I wonder what those super expensive caps ...
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Subtle blending in the T900a with filtering like a pinch of salt in a nice dish(Mechanics being temporarily of course ;-) )
And...you can also see the almost completed 300B SET with interstage drive
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I always was “concerned” about those large high voltage triodes: 211, 845, GM70…. They kind of different… The 845 always was brutal and not elegant, 210 was elegant but not sophisticated, and the GM70 was sophisticated enough but no one build a...
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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="floobydust"]The 2A3 can be almost as quiet, but ONLY in the dual-section paralleled types. I adopted a split balance technique. It only works with cathode bias due to the topology but it is effective. You also need a good quality filamen...
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In context of the recent changes in my playback regarding the electricity and the consequential effects:
http://www.GoodSoundClub.com/TreeItem.aspx?PostID=9252
I have revised and reinstated my interest in the DHT experiment. In addition to a...
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Be careful to relieve me if I am not impressed, many promised no one excelled. :-)
Chris, I do not think that you will see me to think about transformers for other channels. I do not think that what I do will be some kind of resolution for Amor...
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(Romy feel free to move this post)[quote user="Paul S"]N-set, I understand you do not mean to hijack the thread with the Axiom, so I actually tried to make generic and/or thread-related observations. I don't know the 6E5P, but generic issues with sp...
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[quote user="el`Ol"] Some facts:The Japanese horn scene uses colored amps like 300B and prefers to buy Japanese amps.American horns are mostly slightly modified pro gear, quite a bit away from the price range Lamm has in mind, so the market there is ...
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I did not follow up on the issues relating to improved performance on small smps when used on filament and DAC power supplies.Here goes:The first is that the source impedance of this type of supply is very small e.g. less than one ohm. The sp...
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Hi,[quote user="morricab"]Hmmm....I guess I can't really see that unless you are enjoying a particular coloration you are getting from the TVC.[/quote] Nope. On this you are wrong. Based on direct bypass tests the TVC's I USE (that is the specif...
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[quote user="Lbjefferies7"]I found these a few days ago...https://www.solen.ca/pdf/atd/14w2608agti.pdfAny experience or speculation about these drivers?[/quote]They are ADT version of Görlich. I spoke in some extend about Görlich at my site, do the s...
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[quote user="morricab"] You are also right that to get everything you want from an output transformer requires a VERY expensive construction and top materials. However; even an expensive transformer is no guarantee of success. [/quote]
Sorry t...
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...we'll have to compromise somewhere. So, since it isn't the spkr's range, then it must be the amplifier. Forget the ML's 18W. We must have ~38-40, so let's say our machine is using a 45 / 211 / 610 /g70 type of tube.Also I don't suggest we conclude...
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[quote user="Romy the Cat"]Iraschwips , sorry that your post was deleted. The site
was hacked this morning, I fixed it and your post was the only casualty. I
restored it under my name and since you reported it we all set for now.[/quote]
That’s ...
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[quote user="Romy the Cat"] When I said four transformers I meant that I can see 4 type of the tubes. The 2A3 with 700-80R on plate, YO186 with 1200R on plate, the 45 with 1800R on plate and 10Y with 5K on plate. Hey are requires different transforme...
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I made experiments running HF filaments from dedicated Hammond 6.3V transformer vs. lifting ground on my 6.3V IDH filaments. I did not listen Sound but rather measure the noise – the result was identical. In the best cases I was able to get 0.63m...
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Hi All,This is my 1st ever post, but extremely disappointed I never came across this site beforeHere is my current setup, for which I'm desperately seeking some help from fellow membersCabinet - Layered Birch Ply with curved sidesWoofers [93.67dB]- 2...
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Well, what is interesting in the subject: if the Cessaro guy will ever go for the DSET configuration in his commercial products? I am not certain but it is possible that in DSET configuration it might be possible to overcome the accused shortcomings ...
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[quote user="Kcct82"] I know you're not a big fan of digital delay, but I'm using behringer DCX 2496 to make things easier... this way I get to keep all horn mouths on the same plane which avoids some reflections (from other horn mouths). [/quote]
S...
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[quote user="Paul S"]I recieved and accepted an invitation to hear an earlier version of the Cogent speakers, and I was subsequently asked for a considered opinion of the sound. I guess the designers had read from my posts various criticis...
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Certainly, this sincere invitation was offered in part because they found you an interesting Cat, but I think that the offer was also inspired by the fact that you are writing pages of critique on items that you have not, in fact, ever heard.My Korea...
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It looks like the Cogent boys came up with a new design. It is good that they are keep looking, even thogh they unfortunately are restricted with their desire to stretch the use of their drivers over too wide bandwidth….
The new Cogent setup lo...
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