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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Hello Roman,Hola from Hong Kong! How are you? Haven't been here for long time. I have a question at the back of my mine for long time, and it may have been covered elsewhete in your blog before. I am asking it here but do point me to the thread if it...
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[quote user="drdna"] The subwoofer still needs a substantial power source. Right now it is being driven by a solid state amplifier. It would be interesting to see what impact the SET could have here if any.[/quote]
I see, I did not know that ...
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[quote user="serenechaos"]Sometimes it's good to be sucked at first? [/quote]Yes, it is pretty clear. If the simple parameters measured were adequate, solid state receivers would sound wonderful and CD's would be great without oversampling. This has...
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Romy, I have some (strong) opinions on DHTs concerning filament supplies versus specific tube types. For virtually ANY 45 triode, AC is my preferred option. Still, not all 45 triodes will be acceptable for my use, hence weeding thru many of them to ...
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Hi Romy, I've been following your progress, it seems that you are drawing some very similar conclusions to what Steve Schell and I have learned. The bass horn has to be the proper size in order to work well, we are having ext...
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Hi,I'm new to "Romy the Cat's Home Page," was impressed when I read a thread comparison of the Lamm L1/L2 linestage, which prompted me to post here. While I'm not an electronic's wizard (gift is mechanical), audio has been part of my life, dating bac...
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Looks to me like the horizontal and vertical steps in the waveform are due to the diode switching. One diode turns off while the other turns on. Storage time on the diodes is normally short. But it depends on the test setup! T...
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Interesting Romy, particularly the "echo" affect and weird overtones with the aircap. I wonder if the thing is picking up resonances and if the impedance issue is responsible for the overtones... signal being modulated by the varying input capacitanc...
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[quote user="guy sergeant"] In your earlier piece about how to use the S2 'properly' you wrote
"Whatever happens between the 400 and 2,5 is pretty much unnecessary for you garbage. So, get any known to you soft capacitor of 3uF and place it in serie...
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[quote user="RF at Ona"] Romy,I might have overlooked something on your site but I understand that your ULF amp is driven directly by the preamp line stage. If that is the case, you may want to consider an old technique for integrating subwoofers...
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Terry,
I did found that PP amps were good to drive BAD compression drivers (with ceramic magnets). The irony was that the better amps to drive the ceramic magnet were not just the PP amps but the solid state PP amps. Do not ask me why – I do not kno...
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Chris, I'm not Romy but I've listened to some of their products -- about which I'll talk later. First:[quote user="dazzdax"]Hi Roman, FM Acoustics amplifiers from Switserland have been regarded by many audiophiles (mostly the ones with lots of money)...
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I am sorry I do not want to pollute the PP2000 thread with battery options.Right now I am in the process of testing a lot of different comercial amps to see what I will stay with, or which route I will be taking with my system in the near future for ...
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Hi,[quote user="dazzdax"]Thx for this well written and highly educational piece Thorsten! It appears that Romy is not very fond of the Audio Consulting transformers, could you give your opinion regarding those? What is your opinion regarding the use ...
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...on the Placette. Biggest problem at the moment is that it does not have any gain and I definitely need some gain.What I have done is breadboarded a nice diy SS pre with 2x or 3x gain, dc coupled, current mirror, 100mA. It was started a couple of...
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>>Gera, are you catapulted from another planet? Are you sure that you want to drive a mid horn with Rowland amp?
Romy, some people that know me will say "yes", I am not sure... Of course no, not the Rowland to drive my horns, this is the amp ...
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My room, is 16 to 17 feet wide, 27 to 28 feet long by 12 to 14 feet high with all walls splayed, with a combination of absorption and diffusion on the walls. All electronics are fed electricity by three pure power units originally recommended by Rom...
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This is something I've been chewing on for quite some time and finally decidedto make it happen: a serious Stax headphone amplifier.I hope I can use this space as a sort of a blog-report on the progress...if not feel free to remove. I've been "forced...
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[quote user="coops"]Mainly because of my young daughter I have been listening to mostly solid state amps, I have enjoyed 'Digital DoMain's' B1-a VFET, and am now listening to a German 'Audioprojeckte' CA10, 10 watt class A design, ( I will post a...
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Romy wrote:"... I can’t open PDF file..."Here's the part of the Manual that covers design features and specs (no circuit diagram available):IntroductionThe CA10 is a 10 watts per channel Class-A stereo power amplifier capable of great musicality and ...
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[quote user="Romy the Cat"]I do not care about all of Nilsson Pass amps; I feel that all the same and all are very sub-qualified. A few years back Mr. Pass went for his low-powered SS single-ended amps and they might be more interesting. The Cat[/qu...
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Hi all ! [quote user="morricab"]
Hi Romy,
Could you explain a little more about the amp? If I understand you correctly it is a 1 tube stage with solid state (Mosfet or Bipolar??) output. If it is Mosfet then it is likely to be running w...
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John,
I do not think that it should be arguments at the level like: who could hear differences or whose playback sounds more realistic. The man had his point, agree I or disagree with it is irrelevant. The question should be not about whose views a...
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[quote user="Romy the Cat"]
6) Ok, the first half elephant in the room – the dynamics. Believe me or not but PP3000 is more dynamic then PP2000. It was very sensible from the very first note that I heard from the PP3000. I do not know what to say ...
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[quote user="muddasir"]Thanks paul for well thought reply. Two things need clarifiication, i am not new to the subject and am a constant and avid reader.Secondly my preference for music is hobby for electronics and pleasure of listening through appli...
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I was traveling yesterday and away from the computer until this evening. I'm glad to see my post as the source of controversy and even cause for a public flagellation from Romy. I don't know whether to laugh or to cry. Actually, I d...
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one would take full advantage of what can be done in the digital domain so that the horn mouths could be arranged, not for time but to clean up their other interactions. This would be digital the entire way, solid state music files, digital amplifica...
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[quote user="jamesrm618"]The Vincent SP-T100 looks close "The SP-T100 is a hybrid mono block with tubes in the input stage where voltage is amplified. The power output Amplifier circuitry works without feedback." Nominal output power Class-A 8 Ohm: 1...
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[quote user="dazzdax"]Hi Roman, FM Acoustics amplifiers from Switserland have been regarded by many audiophiles (mostly the ones with lots of money) as the best sounding (solid state) amps regardless of price. They even bettered the best amps from Kr...
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Thank you for your answer.If I understand well, In purpose to do something realistic and good sounding. I should use at least 2 amplifiers (one for high frequencies and the GM-100 amp for low frequencies) with a tubes active filter at the inputs of e...
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