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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"] Resonant frequency :
I did not try to measure it. Can anyone confirm the following : I assume this parameter is most easily determined by playing a series of tones at constant signal strength (volume setting) whi...
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Well, I expected more. It was in short.
In the longer version it would be like this. Valery Gergiev brought LSO in Boston for a single concert with Beethoven’s Emperor Concerto by Alexi Volodin and with Prokofiev’s Firth Symphony. Volodin make a lot...
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I always quite laugh when the Audio Morons ™, overwhelmed with zillion-dollars-worth audio installations and with primitive sound in their room, answer my questions: What you guys doing? Those people are under mistaking impression that they do High E...
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The other night I listened to a Girl with Guitar master tape. A friend has a home recording studio that would make most comercial studios not only jelaous, but also broke. A highly modded ATR 102 in 1/4" half track and a vintage stereo microphone; ...
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First off, I will point out that neither Silbatone nor I claim or agree that the Aporia horn is a point source, because clearly it is not. The sound comes from two "areas" but even that is not a particularly useful notion.Although some do make that c...
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In the article “The MiniMe revived, Sound and the Lessons” http://www.RomyTheCat.com/TreeItem.aspx?PostID=12341
I wrote the following:
[quote user="Romy the Cat"] 6) If you do not do anything special with speaker’s tone then your ...
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In this section I will brief cover operational parameters of Purepower 2000 regenerator. I do not have a lot of fun to write this section but I feel that for sake of objectivity it is necessary. Also the next section – the sonic observations - might ...
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OK, I should have done this back when I first thought of it; basically, if I had a tail, I'd wag it: Twisted cotton-wrapped POCC silver and urethane-coated POCC copper with WBT silver Next-Gen connectors; 4 wires/cable; 1 25.5 ga. Cu and 1...
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[quote user="yoshi"]Well, my wording may not be right. What I meant by "integrity of harmonics" is more like "integrity of space where harmonics are presented", which I do not hear in CD/LPs.[/quote]
What "live" analog FM does with space is ab...
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Paul, thank you for your input![quote user="Paul S"]I think with the SUT the "dynamic" loading the cartridge "sees" may swamp the choice of wire metal. Once the loading is dialed in, silver might be nice. [/quote]Yes Paul, absolutely agree--the ele...
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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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I talked for a couple of hours today with a local Solar Power technician, I sort of told him all the gear I have that would need to run on batteries and we got a shaky number; from that number he started calculating a bunch of panels and batteries a...
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[quote user="Romy the Cat"].[/quote]What do you know, today is December, that makes me to use the APS Purepower 2000 for one year. I would like to share some observations about the experiences.Since I posted my comments last year a few folks I know b...
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It is interesting indeed how people allow their attention to go from fixation to fixation without ever changing/adapting methodology, believing none the less that each single idea in turn is The Answer. I remember the first time I heard th...
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[quote user="Markus"]There's no plasma tweeter on the Cessaro. The tweeter is the TAD ET-703. The HK owner has a gold-coloured horn for the tweeter, but there's no plasma driver. I'm pretty sure the horn on the Lansche plasma tweeter is a good bit la...
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Brass instruments function much differently than audio horns. First of all they are built extremely resonant by mismatching length and horn taper. The taper of the bell is there not for horn type efficiency, rather to change the acoustical length of ...
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I find that one of the most interning and stimulating ideas that you expressed was your experience with your bass horn
[quote user="Reinhard"] Midbass horns: are there are two 20 cycle bass horns which normally have 6,50 m in length and 3,20 i...
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[quote user="oxric"] I believe that although you may be wrong to make a difference between ULF and the rest of the frequency range….[/quote]I know when I wrote it I would raise some eyebrows of the few readers of my site who actually are thinking...
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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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Hi,[quote user="Romy the Cat"] After some experiments and still being dissatisfied with the HF I ended up consulting with Dima. He spread me a theory according to which the HF was killed by my coupling Silver Mica cap. All my arguments that sil...
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I am not a DIYer and have no skills nor knowledge to build the Melquiades, so I contacted a technician here to have one built. He said he could make it and stated the cost at around 3000USD including his working time. He suggested some changes in the...
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Preamplifiers: keys to mystery – or…. how a preamp might be not only a load-driving gadget.
Years after years the preamplifiers are being a “terra incognito” of audio people. I admit that preamps are a subject of my persistent curiosity. I was alway...
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Hi Romy,
I did the review on the AcousticPlan amp, called the "Santor". It is indeed a two-stage amp using 4 6922 tubes in parallel to drive a high Bias Mosfet output stage (it is class A to approximately 15 watts and runs very hot). It ...
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A few comments. I think the region that impressed you was somewhere 50Hz-500Hz, the melody range with all those fundamentals. It might appear that it was in the lower end but I think it still was the fundamentals with first overtones. Since you c...
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[quote user="Romy the Cat"]
I do not know why Placette
does not work in your situation. You do not have enough volume? If it is the
case then you might have too low gains in your front end. All my front ends
have very high gain: Bidat, Lavry, my...
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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 class of amplifiers. When I to...
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I think this post need to have an epigrapher:
“We knew what we wanted to hear, and so we developped, and developped, and developped... In hundreds of small and bigger steps. Over thirty years. Till we were "there" where we always wanted ...
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ah forgot. Have some measures to give you an idea. First, this is an (what i use as good budget replacement for the TAD2002 tweeter) a JBL LE85/ 2420 in that trumpet. Green is a „normal“ horn response for comparison. Red is the JBL 2312 trumpet: [url...
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Ha! Maybe I can help. I lived in Tokyo for a few years and tried to find the "perfect" commuting earbuds. Tokyo's "Best Buy" type electronics stores are huge and typically stock 100s of different models. There are also two large headphone specialty s...
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It is even hard to critique because it is beyond of being ignorant of stupid. The John E. Johnson’s review of Lamm L2 preamp in the “Secrets of Home Theater and High Fidelity”. Below are the fragments of the John E. Johnson’s pearls… Each quoted stat...
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