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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I run both of my Reference and Daily tonearms into my “End of Life Phonostage”. As I told I do not know any way to commutate signals at phono level signal and I just re-plug the phono cables at the phonostage’s input. I have no problem with that ...
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Here is a Thai guy looks like built my “End of Life Phonostage”
http://www.kaponk.com/node/715
I do not see nether input choke or air capacitors in correction chain. The most important I have no idea what step-up transformer he us...
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After going through the anal pains of the Image Gallery upload (it is sohuge now that my browser slows down 10000x times loading it and it ocasionally kicksmy router out of this world; can we do something about it?), here are some picsof my assault o...
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The Targeted Audio Listening has nothing to do with general music listening and it is just an ingredient of a very narrow audio evolutions. It might be as stupid as just brainless acknowledgment of individual sound or as complex as assessment of...
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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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[quote user="Romy the Cat"]Last night Levine and BSO played a phenomenal Mahler 5, truly great play. I had some issues with BSO sound and I probably will bring it up to them. Tonight I decided to listen the M5 broadcast for the first time and I ...
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Paul, l I have written about it somewhere: the passive speaker-level crossovers on bass channels are no good. Marko has 250Hz that with 3rd order would be around 10mH and 2mH. With air core then would be very large coils with huge amount of DCR – ver...
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Dominic - At the moment I'm using ..
highs - BMS 4540nd - 1500hz lecleach roundhorn. crossover 1st order HP @ 30khz and 3khz
5842 choke loaded (reg psu) RC coupled into 6N15N (EL84) with a custom sowter mumetal >1000hz xformer
midr...
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Romy's quotes in blue :"...Discussing the Jessie project we multiple times mention the idea of the large midbass horn hanging above MF section... The rational was to have it positionally contra-react the output of the upperbass horn... But do we au...
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I put the final two layers on the choke and temperately closed the amp up as it will be finally done, laying all cables right and so on. The loaded MF channel now has 0.8mV RMS. So, forget about any noise.
Playing the amp today a...
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[quote user="Cosmos"] Anyway, as the description on our site on second paragraph says, the third 6C33 located at the back, is used as the pass element of the regulator (controlled by solid state circuitry) providing 220V with 100uV of random noise &a...
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[quote user="Cosmos"]Indeed it took me a very long time to decide upon regulate or not. I ended up with regulation option to save some chassis space and weight, otherwise I would need at least 10 kilos more and 30% bigger space that would make the wh...
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[quote user="Romy the Cat"]Ok, I got my two more PP2000, not I have 3 all together and I need to find how to use them. My little celebratory mood with PP2000 is much shorn live and my old PP2000 flying back today to Canada for fixing the problem with...
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[quote user="Paul S"]Romy, isn't this the first time you have tried the film caps for PS and the "ALL-NEW" "SUPER-SOFT" diode bridge? I would certainly go back to known quantities before I did or un-did anything serious. Not that I always...
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[quote user="Romy the Cat"].....it is scare how good it is and how good the new Melqs handled it with … almost smile.[/quote]Since almost 3 years ago I was introduced to Milq it went a long way. There was two full-rage Milq ever built by me – one was...
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[quote user="Paul S"] Is it correct to say that since all the tubes will see different loads, it may be that they will behave/react/sound differently on the nether end of the same source, or, as you have said, there remains the possibility of variabl...
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[quote user="nl"]The 45 is a wonderful tube for running compression drivers.
Many people like carbon comp resistors for the plate load, and paper/oil capacitors for the coupling cap here.
PIOs take some time to break in.
Of course you want...
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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="guy sergeant"] I've usually found valve rectifiers to sound preferable. [/quote]
For HF channels only. Still with shaft switch diodes and properly implemented input choke filters there is not advantages of tube rectification, quite oppo...
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Building the Melquiades: #3
Spent last might 3 more hours to pile up in one of the Melq the rest of the parts. It looks like now all detachable parts are there. Whatever parts have no assess anymore are wired and the main ground is in place. Pretty ...
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[quote user="hagtech"] Please do. I have interest in the result myself and don't mind spending the time. I can post photos for each tube. [/quote]
Sure, let do it. Email me your address and I will send them to you. (Do you have sockets?)...
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I had sent my PurePower+ 3000 in for an
“upgrade” (one of many!) back in December 2013 to resolve an issue with a noisy
choke when under load. It still has not
been returned 5 months later after multiple broken promises by the company
president ...
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I think people generally do not understand what PP power
rating is. Regarding a total power VA that a given unit can produces there is
another and probably the most valuable aspect: how much power of the total PP
power makes sense to use. In my ex...
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Thanks, John, I
sink it might be call common mode noise. My concern about calling it common
mode noise derived from the fact that it is not normal megahertz common mode noise but artificially induced common
mode. The PP3000 operate at around 30kH...
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[quote user="jessie.dazzle"] You might try the Foam Factory; they are easy to deal with, inexpensive, have online ordering, quick turn around and can ship anywhere.They are NOT a typical audiophile-oriented acoustic room treatment supplier. Never...
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A year or so ago I published the evolution of building my full range Melquiades amplifier:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=2502
Now, I am staring a thread where I will cover the progress of building Dima’s “Zarathustra II” ...
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[quote user="ml8"] If you think gas regulators make sound of 6E5P so nice, didn't you try putting gas regulator tube in the grid of the 6C33C, and why? [/quote]
Sure, I trued. It sounded very bad. I pull out of my butt any imaginable rational with e...
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[quote user="guy sergeant"] I'm sure there are many bad implementations of the 845 and 211. Almost all of the commercially available ones are pretty mediocre. However I have heard good examples of both so I know it can be done. [/quote]
Actually I d...
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[quote user="Resorob"]I realise that this is a very old post, but you might want to take a look over here=>> http://www.valvediy.com/simplexpg1.htmlThe article can be downloaded as PDF, the writer Ari Polisois developped a new kind of transform...
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Hm, a German company Audio Valve clams that this new Assistant 100 amps has
“110 w sinus wave - 1khz / 1% dist. / 8 ohm load, per channel”
http://www.audiovalve.info/nav/assi100_en.html
That is bold statement even if you drive...
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