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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="Romy the Cat"] ... did anyone have an OK sounding amp with ½ 6C33C ...[/quote]The 6C33C has only one pin that connected to both plates. Since I use ½ of 6C33C in my MF and UpperBass channels then I theoretically burn just a hal...
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So, my two problems have been fixed, I think.First was the issue with the 6e6p for the HF Channel not being able to draw enough current. I checked the bias and it was fine and the potentiometer allowed plenty of adjustment so I changed nothing in t...
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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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Hi Romy,
Could you explain a little more about the amp? If I understand you correctly it is a 1 tube stage with solid state (Mosfet or Bipolar??) output. If it is Mosfet then it is likely to be running without negative feedack, is that r...
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[quote user="morricab"]Could you explain a little more about the amp? If I understand you correctly it is a 1 tube stage with solid state (Mosfet or Bipolar??) output. If it is Mosfet then it is likely to be running without negative feeda...
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Jessie, another thing is that there does not appear to be an actual "standard" tube pin diameter for a given species. Add to this the mediocre initial quality of the Lamm sockets and you have a less than ideal situation to begin with that cannot im...
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Thanks paul for well thought reply. Two things need clarifiication, i am not new to the subject and am a constant and avid reader.Secondly my preference for music is hobby for electronics and pleasure of listening through application of mind and know...
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I do not know why but as I listen to the 80hz Edgar horns more and more driven by the Dynaco tube amp I begin to really like the sound. Even in their untouched form there is some righteousness to the sound. I almost do not hear any serious deficienci...
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Hi Romy,thank you for your answer. On weekend i will rebuild my amp for the 6E6P-DR. You are right, the tube datas shows that pin 8 is a screen. On D3A pin 8 is Grid 3 connected to screen.I will try it with pin 8 lifted and connected to ground. I hav...
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[quote user="KOTriode"] Without regulation, this amp would not work correctly due to its design: DC coupled and fixed bias. The high transconductance will make the bias current varied as much as 50-100ma due power line fluctuation without the reg...
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[quote user="electronluv"]I have not tried different loads for the different driver magnets but i also have not played with fix magnets for a will.one thing is changing load to the tube really only makes a big difference in the bass regions on a...
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[quote user="Romy the Cat"]Why do you think I bout a 1000 of them and closed to the rest of my life my interest in driver tubes?Still, the 6E5P should not be measured as a driver but heard as a driver – the beauty in this tube is in its sound.I do no...
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KOTriode, We had this conversation before. It is not what I regularly experience. The 20% of faulty tubes is astonishingly high number for this tube and if he has this ratio and did not change his suppliers then he must be crazy. On the good side you...
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A few days ago a friend of mine and I did spent over an hour to fantasize what might be done if the ULF tube SET is planned. It is not so simple as to drive the tube like 833/GU-48, you will not be able to do with Milq driver. But I also would like d...
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[quote user="Paul S"]Amir, what you say and the simple way you put it is indeed a very important consideration for speaker/amp matching, and it is something that one must actually hear and cultivate in the first place. Since there is no way to emperi...
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Have you tried these with skinny-pinned versions of your tubes? I just bought a bunch of 6N6Ps that have pins so freaking skinny that the sockets on the ML2s won't connect with them. These 6N6Ps have the "up arrow" printed ...
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[quote user="Romy the Cat"]The only thing that I do not have is some kind of stand alone, mid room HF eater that I would like to place between speakers and the back wall’s windows, something like tube traps or the similar. I do not like the tube trap...
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I stopped by on my way home at my local insulation shop to pick up my custom ordered, huge 28” half-pipe for my middle column. While I was there I saw something that made me horny. It looks like Knauf company last month changed technology and their c...
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The 100W+ SE is pretty much uncharted teritory, not to mention Bass SE. Who can speak about the Sound?Only that who tries.Paul, the diodes in Chimera are for biasing purpose, but I agree, here there is no cathode feedback not ot loose power,the whole...
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Keep the driver stage, the 6N6P, as new as possible. This tube is very critical for the given amp. You might get a tube tester and measure the mutual conductance but with the low price of 6N6P I think it is hardly necessary. I would change it as ofte...
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"I would not trust any seller who clamed that they tested them." -- R.B.How annoying that your words were prophetic, Romy. The 6N6P tubes just arrived from St. Petersberg in a plastic mailing bag rather than a box, and one tube...
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This material is courtesy to Mr. Shibazaki, the owner of Sibatech Shop in Tokyo, that sell internationally Japanise Hi-Fi equipment.
http://www.sibatech.co.jp/
I hope that Sibatech people are more decent then our american distrib...
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I have to admit that I personally care less about powerful full-range SET amplifiers. I do not take their sound seriously, in fact I do not believe they are cable to do “right full-range sound” and what I see then I always imagine them with huge, bar...
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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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[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="cv"]Yes, well - I wasn't really saying much; just a vague hypothesis. There is some tendency for lower Rp tubes, (and somewhat related) tubes with a certain harmonic structure, to sound more romantic, and hence impart that quality to mus...
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Morricab,
I do not know the “truth” and what I said are pure my speculations based upon what I hear and what I measure.
Yes, Lamm drivers at 310mA quite hard but do not forget that his objectives, besides everything, were to get out of his SET max ...
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It turned out that I made my Melquiadenisation with 6C33C. Not practically because it is good or bad tube. The choose of 6C33C was partially accidental: in the beginning I was trying to make an amp that would be able to work in multi-app configuratio...
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All you need is knowing the exact length required to ask for the matching diameter. Probably a bike tube will do. You can cut it as a ribbon or in a string shape. This way you'd avoid any discontinuity for glueing several pieces. From one tube you co...
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Jim it was probably the 7788. This "supertube" was military stockpiled and difficult to get until about 8 years ago when finally military released. Then you could get them for $5 but people are getting wise now as per the $30-40 price...
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