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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I like to read such "reviews", I read them for 17 years now and it impresses me really, that in combination with the "perfect medium" a sonic revolution is fact. Monthly. When it is true, digital reproduction is probably now 34 time...
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[quote user="Markus"]I have recently been thinking about efficiency. Apart from enabling you to use low power amps, is there really any reason why high efficiency is better than low or medium efficiency, all else being equal (and I know perfectly wel...
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[quote user="drdna"] It is not exactly correct. There is 60 Hz hum eliminated by lifting the ground to the amplifiers. The neutral is connected to the ground prong and chassis in the amps, so I assume it is setting up a loop. However, there is a seco...
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[quote user="floobydust"] By definition and code, a separate non-current carrying ground is required for all outlets. In every house I've lived in, the ground is a separate thick copper bar that goes deep into the ground (the earth outside the house)...
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I was replacing transformers in the Super Milq HF channels and while I was doing it I decided to perform a minor maintenance on the amp. One of the amp’s fans developed a “flat” in it bearing and created a very minor “step”. I order a replaceme...
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Jarek, because the PP introduces different grounding schema into your system I did suggest earlier that the phono may require alteration to suit. In my case, when the grounding schema was altered, one phono had a similar issue to yours and the s...
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romy, there is a tuna freak in los angeles who insists that the only way to get the best sound from the l-02t is to use kenwood's proprietary cabling. i dunno, i have never tried one. i have tried two earlier analog kenwoods; my experienc...
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Hey, people chill out. The guy provide just information, I do not think he makes any adjudication comments and if he would then why not. For sure the TG Lee Audio generator does look interesting. The separation of the chasses on 3 sections is very ri...
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[quote user="Paul S"]"Success" equals better except for added hum?[/quote] Well, I am sure I can get rid of the hum, so then it will be all good. In fact, I know I can do that just be unplugging the PP2000. That is not an optimal solution of course.
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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="Romy the Cat"]Because GM70 can work in A2 class the ML3 has a very powerful high current-capable second stage (I do not know it they are 4 parallel 6H30 of some kind of composite follower) to be able to handle the GM70’s grid current.[/q...
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Romy,
No, the DAC was not set at maximum level (for best sound) while Cyrille listening to the system. It was set at normal volume for the whole system. When Cyrille dropped by, I was showing him the Field Coil open baffle speaker system which con...
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Chris,
Since I got that mind-boggling result with “Melquíades” (will finish the thread about the Melquíades sound) I went for an “ultimate solution” for my installation: a “Super Melquíades” amp. It will be dual chassis (amp+PS) 3-chennal amp to mil...
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I'm feeling quite dry myself... No interest in listening to half a system... Just pushing myself to get on with the manual labor... It is somehow like therapy.
Been working mostly on the frames for the horns. They are going along quite well... The...
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[quote user="KOTriode"]Amp at close to clipping level 20.4W, I am surprised that sine wave looked pretty symmetrical. Still has couple chassis left for the Melquiades, the problem is the 400V supplies which required extra power supplies. This int...
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Wow, 6 x 15" drivers (!!!); though the curved profile certainly imparts rigidity, I'm guessing this horn must resonate more than a bit (no bracing until the mouth) -- but I like this thing.
Interesting, the phase plug-like device...
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[quote user="Paul S"]It is confusing, but the NEUTRAL is not only "referenced to ground", but in properly-designed components it is THE ground. If the PP2000 is a 120V device with a 3-prong plug, then it has 2 references to ground within its chassis,...
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[quote user="Romy the Cat"]The servers generate noise at more or less constant amplitude and spectra. So, why do not read the noise and inject into the space with servers a contra- noise at opposite phase? This sort of active noise cancelation system...
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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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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="Paul S"] Which caps exactly did you decide to try? I don't recognize the big black jobbies. Are they oilers? Are they 200V? [/quote]
I did not “decide” but went with what I had in my hands. They are the Ansars from the...
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[quote user="Wojtek"]I assembled SUN 2A3 amp for my friend and found it to be quality kit and very easy assemble. Kit was old .I think late 90's so maybe quality deteriorated since then. I have variety of 300b Czech tubes and (Eml 300b , KR 300...
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Yes, the last cap of power supply much be on the side of load as it shell have a short path to ground. Without it you will have “less bass”, more crosstalk in case it is a stereo amp with single PS and a few other negative things.
With cables is mor...
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[quote user="Romy the Cat"]Sorry, Anthony,
I do not follow what you are asking. What does it mean “panel meter on the DHT channel”?
My DHT channel has a plate current matter. I find it useful but not truly necessary.
My sited at 38mA for years and...
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[quote user="floobydust"] On a second note, you can also modify this for both adjustable AC and DC balance on seperate potentiometers. Both potentiometers would be in parallel with the filament (and padded) but you use the wipers independantly, ...
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I was yesterday drawing plans for the Zaratustra II’s chassis and was wondering how I might use it. The Zaratustra II turned out to be a little Monster, efforts-wise and expanses-wise. I hope it will demonstrate some results that will rectify the eff...
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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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Romy wrote:"...jd, I cannot see any of PDF files, probably my current networks kills them...""...The biggest thing that I wonder is how Mick made the Vitavox bass drivers to has 35Hz resonance. You can always use softer suspension and it will drive r...
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[quote user="jessie.dazzle"]Be sure to connect the chassis of only ONE audio component to the dedicated ground, allowing the other audio components to source ground via the interconnects.[/quote]
I am very convinced that in Adrian case he has more t...
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[quote user="jessie.dazzle"]While reading of your progress on the 6 channel amp, I was thinking ahead, and how I might approach the building of such amps as separate projects for each frequency band (separated physically as well). In my particular ca...
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