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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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truth to be told, i'm so far from building a horn for S3 that the plans may change. the drivers actually haven't left a previous owner yet which makes me a bit nervous. but i understand you presume a short opening horn like expo would allow a more me...
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This is our first offering; we are indeed working on another two higher priced models. One will have an additional channel on top, the other one will be front horn loaded down to 40 hz. Optional finish and colors, both for horns and supports, a...
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Romy,To clear up a few things about the Kilimanjaro RCA1428 clones.The B&C DCM50 is a modern, neodymium clone/copy of the RCA MI-1428B. It was designed and built by B&C in Italy after Bill Woods of AHhorns talked the CEO into it. The DCM50 is...
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Hi Roman... you know "... but Twogoodears normally prefer a do not go to depth..." it's not an hide & seek kind-of-thing, but a necessity;-), as I'm not technical inclined or taught enough to discuss in depth of circuits designing... I'm only a u...
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Feeling less depressed this am. After returning from Romy's and coming down from the high produced by his sound, I made the mistake of turning on my system, which had sounded great the night before. Within less than a half hour I turned it off and we...
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Hi Romy,Minor question with hopefully a simple answer.In the DSET schematic you have a 12.1k resistor in the bias for channels B, C, D and F. I have some nice 12k resistors here (not 12.1k) that I could use in those positions...can you see a problem...
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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="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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[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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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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>>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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...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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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"]
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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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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[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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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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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="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="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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[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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Actually I don't find it surprising that engineers don't realize the sonic effects of their engineering. Remember all the indignant articles and letters they wrote about how great solid state amps with low THD sound and how lousy tubes are. In the ca...
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