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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I find the discussions about "mad" electricity interesting because:We don't know what is causing the problemWe don't know what is fixing the problem but that PP seems to have something that gives at least a predictable result.I mean, we are not talki...
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It is only if you chose to employ tube rectification. Many people claim that tube rectification affects sound greatly in this or that way and they are right, it does. However, it does only because the circuit is designed to be affected by recti...
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Thanks, floobydust.
There are a lot of interesting points in you post to consider. What speaker you drive with your 2A3? If they are relatively high sensitively (like compression drivers) then did you consider going with a single stage? I think I ha...
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[quote user="cv"] …..and I am not confident about the sonics….[/quote]
What might be very interesting also is to learn what DC coupling in power amps would do generally in term of Sound.
The first time I thought about it was a few years back when ...
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Is there any body who used Flywheel power to supply UPS/Inverter?https://www.piller.com/en-GB/183/energy-storage...
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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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I have to agree with romy on all except one point. I have always had problems with my electricity even though I live out in the woods, but just 10 miles from the Seabrook nuclear power plant. My journey in improving this problem took up at least 20% ...
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The people who use a single driver speaker believe the while their driver move back and forth for it also radiates a problem-free MF and HF. Near the same people believe that if an amp has capacitors with precious metals foil then it not only do ...
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[quote user="Romy the Cat"]
I looks at the statistics page of my site and it looks like there were zillions Netherlandiams visiting the site. I wonder why they don’t say how the Kemp regenerator sounds. The judgment part? Well, this is an easy part....
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All those vintage speakers are not interesting. Among the contemporary loudspeakers, I also to do not know anything that I would consider unarguably worthy.
The main point off of this exercise is to let people to think about the opportunity or possi...
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I'm a physicist actually :-) I'm denying modern physics every day. Not to deny the string theory one must be a complete idiot: 1+2+3+4+....=-1/12!!!I've made a stupid mistake and decomposed my EMT for cleaning and now, in big painsand with a help of ...
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I agree with your observations, and my own misgivings swirl around exactly the points you raise. In addition, I have tried battery phono stage and all it had to offer was quieter "background", everything else was worse, despite the wild and exo...
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[quote user="Paul S"] http://app.audiogon.com/listings/omnigon-full-function-tube-preamplifier-phonostageLooks like a serious effort that has been kicking around for a while.What tubes are used? Are they twin triode, like 12AX7 or - more likely - 692...
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I've spent two more nights examining and fighting my ham (I'm vegetarian and I want my phono to be so as well).1) I did Romy's excercise with shorting the stages via a 0.47u cap to GND. Shorting the plate of V2/grid of V3 resultedin the biggest reduc...
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Yes, this is I was asking for. Then quiescent current per tube is +or- 1.2mA, total 3.6mA through 6K resistor.
As you stated, the power supply you built is like put a jet engine to a Honda Civic, but I have the irons and I like the idea. If necesary...
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I did glance over the Mickelson’s articles and it amasses me to what level of arrogance those reviewing people are able to descent. The whole article is so remarkably about nothing that I even surprised that Lamm signed it off. (All “reviews” that th...
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Alexd wrote :"...most of them do not sound as good as good quality 16Bits cd transport...""Most of them"... Well you are honest; enough so to admit that some do, though they may not be of your own creation."...Our DAC improved computer generated...
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[quote user="manisandher"]The only issue that I have with it is that I can't use the PMII in Master mode at rates of 176.4 and 192KHz... the AFI1 cannot double the clock frequency from the PMII.[/quote]The latest firmware 'fixes' this issue. The AFI1...
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[quote user="KOTriode"] Thank you for the comment on this amp, this is my first time of using the 6C33C tube, I decided to build this amp after reading about the Melquiades, this amp is just a quick experiment on the 6C33C sound, since I have a s...
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I was right before but now I really review my rightness for a new perspective. Yes, the compressions drivers are the subject of clean signal but it what I witness with the new 6-chenals DSET put what I said above in another extreme dimension. I do no...
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[quote user="Kerry Brown"]The RCA1428 is a great sounding driver on RCA multi-cell horns. Not that I like multi-cell sound.[/quote] Hmmmmm… If you feel that RCA1428 sound great in multi-cell then hat make it to sound different in single-cell? What I ...
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Well, it looks like I got fucked by the transformer company.that realy sucks !!! I have not talked to them yet ,but even if they agree to replace them it will take at least 6-8 weeks plus international shipping cost , import tax , VAT .Filament tran...
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Thanks Romy!I went with two tiers as I do not have much space between the speakers and the side walls as I have a 2.5M cabinet on the front wall.I named my amp Koshka as I always felt Koshka made a contribution to the development of the Melquiades an...
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One thing I can say about the iDAT 44+ is that there really isn't much to it, ie, don't buy one for its parts count. It has a small power supply/regulation, for sure; small caps and not a lot of them; a few small chokes and a small Torroid...
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Well, I think the short answer is yes.What the people over at Technical Support have told me is that this is due to the power supply design of the amplifiers that are being driven by the PP2000 and that it seems to be characteristic of certain types ...
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I’ve been thinking about all this electricity stuff…
I’ve stopped using all power conditioning devices since Bush got re-elected, and I consequently left the country to start a new life in the land of 220v/50Hz (this BTW, is not an exaggeration).
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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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Lots of good information in there, if one has some idea of what it means in terms of sound and how it might be integrated into a system. However, some of the guys who are the smartest with respect to circuit design seem to have n...
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Romy, I did some models using a 400V supply and a 6K OPT load. It's easy to get 4 watts output in this configuration, but using a 2K cathode resistor results in higher distortion and a weak transfer curve. Plate dissipation is around 11 wa...
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AlloOn the matter of the DHT having a plate resistance of 500-700... you do realise that running the 6E5p with an unbypassed cathode resistor is giving you an effective Rp of about 12k, right? The formula is, IIRC, Rp + (mu+1)Rk.Given that 12k seems ...
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