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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I did have the Déjà vu feelings about it as I felt that we had this conversation in past. Here we go – it was a year ago.
http://www.goodsoundclub.com/GetPost.aspx?PostID=4291That post has both 6E5P-E and 6E5P datasheets and they are virtually the d...
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[quote user="hagtech"] Stepping back a moment, I'm guessing this tube is designed for radar operation. Maybe in an aircraft. The spec sheet definately talks only about pulse mode of operation. Maybe it was a driver for a pulse radar...
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[quote user="drdna"] I think this 2A3 must have a specific set-up to sound its best. You have not found it yet. To begin with and familiarize yourself with the sound of it, I suggest sticking with the topology that has been tested by amplifier design...
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Sorry I'm a little late here, but anyway... here's something that may worth trying. Apologies that I can't provide a schematic at the mo - I can sort this out later if you like. In the meantime, you'll need a pen and napkin to help visualise this:The...
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Yes, decoud, the 6e5p-GM70 is an easy amp but 6e5p is a hell of voltage driver and I do not feel that a single 6e5p will be able to drive GM70 into grid currents. If people use dead speakers and need a lot of power than use the ability of direct hea...
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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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I think it should be somewhere posted for my and perhaps for others future references. Here is the setting for testing Melquiades' single-stage tubes on Hickok 580/580A tube testers. To test the tube as a driver for a full Milq (two stages) set ...
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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 not know why it gave to y...
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Sometimes my time will come and some of you will try the 6E5P as a driver, properly used. Then, if this person has a sensitivity and rudimental audio intelligence to recognize some unique 6E5P’s sonic signatures then he will find interested to reread...
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[quote user="Paul S"]Adrian, I agree that SETs generally have issues such as you describe, and moreso the small ones, especially at the frequency extremes, and at saturation, which tends to occur all too soon, IMO. But I have not sourced t...
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[quote user="drdna"] Well, and I have a dozen of them sitting here next to my desk while I am building my Milq amp s-l-o-w-l-y so I guess I will discover my audio intelligence level sometime after the New Year.[/quote]
That is so cool that you...
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[quote user="Wojtek"]has supposedly very nice Obbligato line of film HV caps . [/quote]
Thanks, the high nominals the have only 630V and they are larger than I would like to have. Does anyone know how those Obbligato sound in PS?
[quote user="hagte...
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Here is a document in Swedish language that describes its authors’ view on 6E5P. Since the author extensively use a park of Russian tubes I presume that he is Russian descent.
http://www.romythecat.com/pdf/6E5P_Swedish.pdf
If you do not speak Swedi...
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I got my second version of new power amp up and running, this time using the 6E5P Romy recommended. Output tubes are 2A3. Amazingly, this amp runs at 0.12% distortion at 1W. No feedback anywhere. It is simple two stage amp run...
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Oh, I forgot, the input sensitivity is roughly 0.95Vrms. At 6W power, the output sinewave looks like this:[img]http://www.hagtech.com/blog/images/pa-10power.jpg[/img]When driven into overload, a +6dB input (1.9Vrms) generates 13W output and it ...
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I run the driver tube at 170V @20mA. I don't think you need to run this tube at high current. It is very linear with wide signal swings at this bias. I can get roughly 70Vrms out of it. Output stage clips first, driver continu...
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[quote]Do you plan to develop this amp to a commercial product?[/quote]Yes, this is slated for production. But I really doubt I will sell many. Perhaps a few pairs. It's a bit out of the mainstream. Really need to us...
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I do not remember what I sent to you, since I sent you for measurement perpose then it might be the impulse version of the tube. In the image below are vertical tubes from left to right:
0A26E5P-E (smaller)6E6P-DR (larger)6E5P (the largest)0A2
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Frank Blöhbaum, from Sweden I believe, have designed for Thorens a preamp that I think the first outside of Russia commercial use my 6E5P tube.
http://www.6moons.com/audioreviews/thorens4/tep3800.html
I do not know if Frank reads this site but if ...
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In my post above I have mention that Srajan is in a way a brainless parrot that repeats the heard and has no ability of desire to understand what was the noise about. His comments that 6E5P and E810F are “close electrical” is a good indication how it...
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[quote user="Romy the Cat"]
[/quote] Funny it took 2.5 hours to build the San Audio Kit for 6E5P. The 6E5P is at 150V (a bit low for it but it is OK), loaded with 15K and coupled with 2A3 via a cap. The 6E5P is biased with one 3.6V lithium ba...
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Romy,
I assume you plan to use one of these as the driver tube. Do you distinguish any difference in the sound between the two tubes? I am curious as I have been looking over a big pile of them and they respond quite differently regarding vibrat...
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I have no idea why this guy is and what he says, I even have no idea of what language it is but here it is: the 6E5P-6C33C amp in PP configuration.
http://drzlab.com/projekti/TPPP_6c33c.html
Interesting that he uses Russian milita...
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Sorry I'm a little late here, but anyway... here's something that may worth trying. Apologies that I can't provide a schematic at the mo - I can sort this out later if you like. In the meantime, you'll need a pen and napkin to help visualise this:The...
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BTW, how stable 6E5P is? I'm asking as I was contemplating biasing the output by the voltage drop on 6E5P's plate choke (DCR is say around 1k),with only some minimal autobias on the output. The drawback is that any drift in the driverwill rebias the ...
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[quote user="N-set"]BTW, how stable 6E5P is? I'm asking as I was contemplating biasing the output by the voltage drop on 6E5P's plate choke (DCR is say around 1k),with only some minimal autobias on the output. The drawback is that any drift in th...
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Not quite on topic but perhaps this deserves to be here:http://www.theaudiophile.net/threads/762-Lyrita-s-new-Mono-amps-and-DHT-Preamp?p=7735#post7735It appears to be a simple two stage SE design with the 6e5p coupled to the GM70 via an interstage tr...
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Yes, decoud, the 6e5p-GM70 is an easy amp but 6e5p is a hell of voltage driver and I do not feel that a single 6e5p will be able to drive GM70 into grid currents. If people use dead speakers and need a lot of power than use the ability of direct hea...
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http://www.sitefile.org/showimage/6/6c33c.htm
...
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[quote user="Romy the Cat"]Celsius, I think you do not take in your equation the input voltage. If you bias 6E5P with 4.1V then it can pass 4V with no feedback. Since the tube has under normal circumstances 33 times gain then you have 132V RMS from ...
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