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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I actually took the remaining dozen of gold grided 6C33C from that eBay guy. It is hard to say what those tubes might be and it is most likely absolutely not necessary in my case. Still, I figured that to get a dozen of 6C33C for a price of a pair o...
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...future subjunctive...Romy, I am not sure that the first part of your response actually addresses the first part of what I was talking about. So, I +/- repeat myself:As an extreme example, if I see a claim of "80 dB gain" for a phono stage, it is ...
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The pisser with the AC filaments is that they "sound better" in terms of immediacy and proper acceleration, and the sound "quality" with them is obviously more "lifelike". But too often the damn things are just plain noisy. I was thinking I remembe...
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[quote user="Jack 14"]To sum up, it seems that if you want a stable VR tube, you should age it a few hundred hours and shield it against magnetic fields. Is it making any sense to you ?[/quote]Interesting, Jack. I have two old-school quite experience...
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[quote user="Serge"]Looks like a good solution, this. To make the fabric-covered pipe more reflective you may spray-paint the fabric, I think. [/quote] I read last night the ACS papers, patent and learned how the tube traps work. To my surprise they ...
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Who know how they die, at least I was not able to figure it out. The literature suggest that when gas regulator at the end of their life they stop regulate or maintain regulation but increase noise. I was not able to detect it.
I have many gas regu...
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The 6sn7 is a fine amplification tube for use in preamps or gain stages, but it has way too high of an output impedance for driving power tubes. This is my personal preference. It also depends greatly on the topology. Maybe George u...
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The 6C33C preamp? Hm, this is bold. As I see you use it as a single stage buffer with only one 6C33C and couple output with a transformer? I head the Germans built something like this but I never heard it or saw it. I do not feel a need for such ...
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[quote user="Stringreen"] My opionion is that there is no absolute tone - just as there isn't an absolute sound. [/quote]I disagree. I do not know how about the absolute sound – it would be a difficult subject but “Absolute Tone” is not only ease be ...
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[quote user="AlexBerger"]I think I should to give some break-in time to Sylvania 0a2.50 hours is enough? Previously I used in my EAR the next set of tubes ECC83: 1-Amperex (red print), 2-Amperex (red print), 3-Sylvania 7025 (yellow print).When I ...
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[quote user="drdna"]However, there is no comparison to the expensive tubes from Kron, Sophia, and Emission Labs. These are all in a separate category. These produce a very different sound. It is like this: on the old black and white TV sets, there we...
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The "better" 5751s got here and I took advantage of wifey's absence to listen at night. It was cool and the electricity was pretty good, just a little "dry", but no "cotton". Lazy boy, I still haven't fixed my DAC, so I have had only viny...
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Paul, 6E5P may strech very much, but maybe just enough to close the gap. In such a racing car there is a little margin, it's not a usual 10W+ design. Biased at -3.5V 6E5P will produce +40Vmax on the grid, driver driven to the limitThe grid will eat ...
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I think they're different things. I have a tubed phono preamp which I've slightly tweaked until it delivers the results I needed. If I had found a SS unit doing the same things for me, I had got it. It's not a matter of tubes being better or wor...
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I would not say the circuit (per se) was becoming more sensitive to tube choice (and neither would I claim it's not...); I would say that as I have developed the system I have been better and better able to hear what more and more piec...
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The preamp has the classic tube regulated power supply using 5R4, 6AS7, 6SJ7. It is transformer coupled output and has no capacitor in the signal chain, the gain is about 8db, so it is not a buffer. For convenience, it does has a remote control. It i...
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Yes , I told Romy about this funny idea , which is quite simple of course - to make a simple SRPP stage on special hi-voltage tubes , powered with high voltage supply ( 10000 V , for example ) and drive the electrostat panel directly from the output ...
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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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[quote user="Romy the Cat"]fiogf49gjkf0dI am observing an interesting and surprising fact – I am begging to like my active Marchand crossover. I did a number of modifications to it and it looks like the parts are broken-in now – it does sound very pl...
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[quote user="Romy the Cat"] It is not a the thread about Allnic but LCR RIAA correctors, still there was something expressed in here about the Allnic LCR phonocorrector… and I feel bad about it. It is not that I don’t think that Allnic LCR phono...
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[quote user="Wojtek"]With the stock radio-CD and buzzing fulrange speakers in my Civic I often find myself puzzled how pleasant and musical this crap sounds. If only I could get close to it at home -fruitless pursuit so far .Romy when it comes to tub...
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Thanks Adrian, Have you also had a chance to listen to some NOS 2A3? I'd be interested to see how they compare to the new issues. I've managed to collect quite a number of NOS 2A3 tubes over the years, brands I have include RCA, Sylvania, ...
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I kind of in a way used these techniques with my playback during past years. When I used 3-channel Melquiades and had a dedicated ½ 6C33C for MF driver of Macondo I usually tended drive my rights MF channel at slightly higher current then left c...
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Taras Oleynk aka “ML8” sent me a couple months ago his measurements of different driver line-level tubes including the Melquiades’s diver tubes – the 5E5P. I am posting his data here with his permission, including Taras’ statement that is JUST PRELIM...
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You are not as cryptic/abusive as you believe you are. I personally view your comments in context of your other commons at this site and understand that it is your style: do not express yourself but mysteriously bark from the side road. From this per...
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[quote user="Romy the Cat"]
How difficult is it to find 437As good enough for a phonostage? For commercial applications is it a dead tube. WE might produce it again when they stated to redo the tubes but the existence of the Russian 6C45P pretty mu...
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Just some additional thoughts on the new generation of 2A3 tubes. The only ones I would seriously consider are the Kron Enterprises, the Sophia Electric, and the Emission Labs tubes. If I did not hear these side by side over an extended period of ti...
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[quote user="Romy the Cat"]
Romy the Cat wrote: I made a nice half-circle wall in place of the mid column. It sound nice but afar a week of living with it I have to tell that I feel a bit stale and too utilitarian. I do not pretend for any sophist...
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[quote user="Romy the Cat"] Spending some time listening carefully my new setup after fine-calibration I recognize some inaccuracies in my previous comments and some mistakes of my original objectives. Here are some observations I would like to m...
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[quote user="Gibraltar"]I recently picked up a MAX-282 tone arm and when setting it up with my test record I'm getting buzzing in the right channel during the bias test tracks. Changing the anti-skating setting has no audible effect. On other arm...
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