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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="Paul S"]Again, you might gain something by fastening the rack to adjacent walls and adjusting the tension and/or damping of those connections. In any case, you'll want to prevent swaying of a TT support, and likely a CD transport, as wel...
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Paul, my system is back to the operational mode after the EMT tonearm disaster. Actually the biggest disaster was not the lost connection in one of the pins but....the bearing gave up according to my EMT tech (!!!) I must say I've never heard of a to...
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I know, it makes sense to think about me in such a way because of not knowing more about me, but I definately have potential to get to good places in audio if I just had some things improved here and there... I have belief in my capability even ...
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Paul, don't get me wrong--normally I'm not choosing a tube by the power, but this situation is somehow special.There are very few tubes which have the right electrical parameters (gm, mu, power, etc) to start with. In thesmall tubes word one can glaz...
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I think you did not understand what I mean. Also, there was a subtle word "implicite" in my statement which makes a difference here.Closed magnetic loops: I did not mean the cores of magnetics, but thegeometry of the shields. To catch the magnetic fl...
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AlloWell, I hope I wasn't threadjacking too much; as far as I see it, the best case for digital processors is for messing around with the time domain, not for x/o'g. Ah, so you feel a bit of phase shift at LF is beneficial... interesting. I've a...
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[quote user="N-set"]Somewhere earlier last year I searched for some tubes in ex-USSR and YO186 did pop up, esp. in Ucraine IIRC, with not unbearable price ~$100/tube, although in unknown condition (I did not buy any).[/quote]Yes, I have seen the YO18...
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Romy says:[quote]The problem is that in context of those amplifiers the COST BECOMES THE MAJOR DESIGN IMPEDIMENT[/quote]Yes, but it shouldn't -- should it?Let's be reasonable (a tall order). Either a designer knows how to design or not. If he doesn;t...
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Thank you Romy, that was very informative and instructive!I don't completely agree that OP is absolutely irrelevant for linearity.It can happen that some regions, under given design constraints, will not give "a proposer harmonic structure of
your s...
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If I may add, from experience, following and including Romy's post above:1) In cases of established incompatibility with a average power SET, more output energy (55W), will not completely clear the above 2) and esp. make 3) less "muddy" or ...
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Hi Romy,Agreed about the S2 transformer being the most prominent it is here I think that mumetal will shine. I should have said that I was referring to the upper S2 covering 1k-12k or so. I wasn't too clear earlier - when I suggested rolling of...
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Alex, as I wrote I use Z-foils at the primaries of mu SUT's. I'm not sure if colder is the world *I* would use. I'm after immediacy and transparency and this is what they gave me. Also widening tonal discrimination, hearable esp with solo piano. ...
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Coincidentally, yesterday (14th Feb in this part of the world) -- a timely coincidence as I only read the posts today.A friend constructed a temporary 150Hz tractrix out of hard paper -- a 12hedron. This is not about the sound etc, the horn served fo...
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Thank you Paul! Yes, I did notice Romy's tweeter movement, he also described it two posts ago. But I have a different room than him (smaller, dead, close walls, etc). I like the HF a lot, esp. with Ortofon cartridges, but I'm missing some air. C...
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Hi Roman, hi all... intriguing post and interesting questions, as I've been for about 20 years a triode and, before, a tube user and a glowing-in-the-dark maniac.My experience...I purchased - years ago - an Hiraga 20W which I used as a bass enclosure...
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Ok, I think I've finally vivisected my ham--it's connected to the rectifier switching (at least some part is).Below is the waveform of the loaded HT secondary (red trace) and the signal from a search coil catching the leakage flux close to the transf...
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[quote user="Romy the Cat"]It is unquestionably an ambiguous project. The topmost question that I would ask myself after this project would be the following: can Milq-biased 6E5P to be as good (sound-wise) DC driver as some vintage direct heated tube...
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(Romy feel free to move this post)[quote user="Paul S"]N-set, I understand you do not mean to hijack the thread with the Axiom, so I actually tried to make generic and/or thread-related observations. I don't know the 6E5P, but generic issues with sp...
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What I find irksome is exactly this: [quote]Hi-Fi
companies and Hi-Fi marketing are lost touch with the nature of sound
reproduction and so deep in disassociation with the means of Real Audio
that they are forced to pull out of ...
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After the endless battles with bad electricity, great news that you have found one, and possibly two, good solutions. I can vouch for the terrible electrical infrastructure and great radio stations Boston has to offer. Some days my system sounds pr...
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Wow, Romy, respect. For an analogue 5-6 way in room response... that's amazing! Esp. mid-highs. Id never guess.
I can imagine that khorn graph sounds difficult. Wouldn't blame the horn for that, rather the room modes.
The 75 cycle suckout likely ...
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[quote user="Romy the Cat"]I think that you did not exactly my version but made some modifications; I do not know/remember what they were. [/quote]CCS heating of the tubes based on LT337A, 2x0.47u+470K at the output,my filtering is a bit bulkier at ...
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[quote user="Romy the Cat"]
Telstar wrote: I am convinced that the soundcard/interface is the main cause of the inferior performance of HDD vs. CD. I disagree. The main cause of the inferior performance of HDD vs. CD is not the soundcard/interfac...
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1) GND NOISE
After more experiments, I can proclaim a victory over the 100Hz noise on my End of life phono. For whatever reason the GND connection does not want to run in a close physical proximity of the line and n...
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Ah electrostats...I am fairly sure that problem with esls is trying to take them down to low and them not being driven properly. If you actually calculate how much current you need to drive transient peaks into an ESL, it's horrifying. I can't imagin...
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