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Read the Post in new Window Read the Post in Threaded view  Post #17: A half of 6C33C is still much more fan then 300B by Romy the Cat on 2007-01-11 
Browse the content of the threads in new Window  Thread: Get, or made up a tube tester, it’s necessary in Audio For Dummies ™  44 Replies 
[quote user="hagtech"]Hey, I never thought of this.  You can run 1/2 the tube at a time!  This actually puts it within the limits of the VacuTrace.  I can test each side separately.[/quote] ..and while you do so you might discover one...

Read the Post in new Window Read the Post in Threaded view  Post #12: DHT or 300B? by Paul S on 2008-11-29 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Romy, setting aside for now the issues of loading, the observations about color seem at this point appear to be as much about 300B as they are about DHT.  As near as I can tell, people who like the 300B's color-capability either like or do not h...

Read the Post in new Window Read the Post in Threaded view  Post #13: 300B by drdna on 2008-11-29 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
I agree that it is difficult to extract the color of the DHT from the 300B and indeed from the circuit used in this experiment. It would be good also to listen to some IDHT 300B amplifier. However, there is something to be said for the certain ...

Read the Post in new Window Read the Post in Threaded view  Post #41: DSET or do not DSET? by Romy the Cat on 2007-02-11 
Browse the content of the threads in new Window  Thread: Lamm Industries: a special interview with a special company in Audio News  97 Replies 
[quote user="Gregm"]Actually, that could be a viable commercial product: a "stereo am"p allowing for four channels. One hi side, one low side, per channel.Any moron purchasing this could be stratosphrically happy flabbergasting his pals by "passively...

Read the Post in new Window Read the Post in Threaded view  Post #9: 300Blee by N-set on 2012-09-25 
Browse the content of the threads in new Window  Thread: Staxquiades project in Melquiades Amplifier  19 Replies 
Thank you Romy! Actually I've realized that when I wrote it I rather ment dynamical stability then frying the outputs. But in proper PP the even order harmonics are strongly surpressed, sothere should be no or very little change of the output OP due ...

Read the Post in new Window Read the Post in Threaded view  Post #321: Eaten alive. by Romy the Cat on 2009-05-23 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="Romy the Cat"]BTW, I have a local Bostonian guy have replied brought today a very interesting DHT amp. He has a number of DHTs and this one he reports is the special one, quite expensive as well. Although the electricity was not good tod...

Read the Post in new Window Read the Post in Threaded view  Post #2: Opinions are like.... well, you know... everyone has one. by floobydust on 2009-07-02 
Browse the content of the threads in new Window  Thread: The DSET perspective examines the Herb Reichert article. in Melquiades Amplifier  5 Replies 
 I looked at the schematic for Herb's 300B SET many years ago. It's been copied and slightly modified by many.... personally, I would not use it for a 300B amp... then again I probably wouldn't use it for a 2A3 or 45 either (I think my input/driver d...

Read the Post in new Window Read the Post in Threaded view  Post #11: GM70 advantages? How real is real? by Romy the Cat on 2006-06-08 
Browse the content of the threads in new Window  Thread: GM70 vs. 6C33C in Melquiades Amplifier  13 Replies 
I have to tell you something: I do not believe to audio people. Whatever they say has some freakish twist of desire to present the sings in a certain way instead of witnessing and experiencing the thighs as they are. This is one of the reasons why I ...

Read the Post in new Window Read the Post in Threaded view  Post #1: 250 watts Parallel S.E. advises by devo_yan on 2018-05-16 
Browse the content of the threads in new Window  Thread: 250 watts Parallel S.E. advises in Audio Discussions  13 Replies 
Hello every body, I live in France and I'm new on this forum.I'm thinking to build (some months) a mono big Single Ended amplifier (200-300 watts) made with triodes (IDHT or DHT doesn't matter for me) for outdoor professional audio.Have you got an on...

Read the Post in new Window Read the Post in Threaded view  Post #97: I suggested once VT52 tube by Wojtek on 2009-01-02 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
I assembled SUN 2A3 amp for my friend and found it to be quality kit  and very easy assemble. Kit was old .I think late 90's so maybe quality deteriorated since then. I have variety of 300b Czech tubes and (Eml 300b , KR 300BLX 842VHD ) bought t...

Read the Post in new Window Read the Post in Threaded view  Post #18: Reply Fishbowl by RennieB on 2010-03-15 
Browse the content of the threads in new Window  Thread: More power from Melquiades? More powerful tube? in Melquiades Amplifier  19 Replies 
Hi Romy,Thanks a lot for your reply! Very helpful but there is some misunderstanding...I personally have a WE91A 300b Clone, no ambition to build something with the tb3-2000....There is a guy building one though...  ( I would if i could!)My problem i...

Read the Post in new Window Read the Post in Threaded view  Post #8: My DHT experiment: Preface by Romy the Cat on 2008-11-24 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
First of all it was quite interesting and quite educational. Second of all it answers no questions but rather creates more questions. Here is what I try to compile some my observations and thoughts on the subject. I have a local guy who red my site ...

Read the Post in new Window Read the Post in Threaded view  Post #14: Talking, perception and the grounds for objectively by Romy the Cat on 2008-11-29 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="drdna"] However, there is something to be said for the certain magic that can sometimes happen with a particular device. The unpredictable transients and color shades add a sense of alive-ness that seems separate from the standard charac...

Read the Post in new Window Read the Post in Threaded view  Post #26: Vacuumstate by Bill on 2010-08-29 
Browse the content of the threads in new Window  Thread: My feelings about new exciting audio products in Audio Discussions  25 Replies 
I never heard the Vacuumstate. A pair of 300B in the “differential SET” application… Hm, would it sound different then a regular 300B? Juts kidding… The last “SET tandem” that I head was with a pair of 6C33C in “differential SET” pushing 45W. The amp...

Read the Post in new Window Read the Post in Threaded view  Post #15: Hybrid (Tom Evans) by RonyWeissman on 2008-06-23 
Browse the content of the threads in new Window  Thread: My feelings about new exciting audio products in Audio Discussions  25 Replies 
Hi,  yes i agree that my solid-state amplifiers were not best choice for compressio drivers, they were my second amps when electricity was bad, otherwise I use a custom made 300B from La maison de l'audiophile for my system when electricity is v...

Read the Post in new Window Read the Post in Threaded view  Post #1: ELROG tubes sinked but saved. by xandcg on 2016-08-20 
Browse the content of the threads in new Window  Thread: ELROG tubes sinked but saved. in Audio News  0 Replies 
Seem ELROG was sinking. Thomas Mayer (aka Vinyl Savor) bought the ELROG assets and the production should continues. I have some "interest" on their 300B tube just because that is not really a 300B, it have thoriated tungsten filaments. I did not hear...

Read the Post in new Window Read the Post in Threaded view  Post #12: DHT or 300B? by Paul S on 2008-11-29 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
Romy, setting aside for now the issues of loading, the observations about color seem at this point appear to be as much about 300B as they are about DHT.  As near as I can tell, people who like the 300B's color-capability either like or do not h...

Read the Post in new Window Read the Post in Threaded view  Post #101: Some talks about the new production tubes by Romy the Cat on 2009-01-10 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
It is 300B but I do not think that there is any difference. http://www.enjoythemusic.com/magazine/equipment/1201/300b/ http://www.enjoythemusic.com/channel/ch300b/ The Cat...

Read the Post in new Window Read the Post in Threaded view  Post #1: Hiroyasu Kondo: “My thoughts on Hi-Fi”. by Romy the Cat on 2009-09-27 
Browse the content of the threads in new Window  Thread: Hiroyasu Kondo: “My thoughts on Hi-Fi”. in Audio Discussions  0 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #3: They have 2 tubes. by Romy the Cat on 2010-12-09 
Browse the content of the threads in new Window  Thread: The Engström & Engström Lars.... in Audio Discussions  2 Replies 
[quote user="Paul S"]20W from a 300B?  What?  I missed that. [/quote]Actually then call themselves Moonoblocks, it means that they use 2x300B for channel, probably paralleled or in SET PP configuration like Audio Mirrors does it. Still it is pushy fo...

Read the Post in new Window Read the Post in Threaded view  Post #13: Active filtering by devo_yan on 2018-05-30 
Browse the content of the threads in new Window  Thread: 250 watts Parallel S.E. advises in Audio Discussions  13 Replies 
Thank you for your answer.If I understand well, In purpose to do something realistic and good sounding. I should use at least 2 amplifiers (one for high frequencies and the GM-100 amp for low frequencies) with a tubes active filter at the inputs of e...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: To drive the 6C33C... by Thorsten on 2005-07-11 
Browse the content of the threads in new Window  Thread: To drive the 6C33C... in Melquiades Amplifier  65 Replies 
Hi,[quote user="Romy the Cat"] I liked the most when I drove the 6C33 plate with 230V. I run all possible currents and… surprise, surprise I ended up at 150mA.[/quote]I find the same true with other power triodes. When comparing operating conditions ...

Read the Post in new Window Read the Post in Threaded view  Post #3: Taste of Blood - the further thoughts... by Romy the Cat on 2005-05-25 
Browse the content of the threads in new Window  Thread: “Zarathustra” amplifier: loosing of virginity. in Audio Discussions  7 Replies 
I read the Owen’s observation and it strokes me that he was in a way correct: the Zarathustra does sound kind of strange and very much sonically it reminds a 150W 300B SET. It has some beauty, sweetness, liquidity and appeal at MF and in someway calm...

Read the Post in new Window Read the Post in Threaded view  Post #30: Old valves have more soul! by guy sergeant on 2008-12-01 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
112-71-300B works for me although I sometimes use some 845 PP amps for the lower frequencies.[IMG]http://i75.photobucket.com/albums/i318/murrayjohnson/e96aaf9e.jpg[/IMG]...

Read the Post in new Window Read the Post in Threaded view  Post #9: and I only wanted to gripe by hagtech on 2007-01-08 
Browse the content of the threads in new Window  Thread: Get, or made up a tube tester, it’s necessary in Audio For Dummies ™  44 Replies 
[quote user="cat"]Will your tracer be able to pump 250-300mA at 230V? Will it be able to supple up to 100-110V of bias?[/quote]Not quite.  I designed it for preamp tubes.  But then I realized I could push it to cover a lot of the more popul...

Read the Post in new Window Read the Post in Threaded view  Post #2: Myth? perhaps... by Romy the Cat on 2005-12-28 
Browse the content of the threads in new Window  Thread: Myth: High-efficiency Low-power in Horn-Loaded Speakers  12 Replies 
Myth, perhaps but let look what might actually the myth migh be. There is nothing “on a paper” that presumes a good sound. 109dB sensitivity is not automatically means anything and a 300B SET is not a definition of some kind of abstractive quality. I...

Read the Post in new Window Read the Post in Threaded view  Post #21: Dht-dht by nl on 2008-11-30 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
If one dht is good, two must be better? I don't know. Some people like combining 6C45 etc with DHT, supposedly mixing the appealing qualities of each. Other people find that using a 6C45 (or other high-gm tube) with a 300B just makes a 300B sound...

Read the Post in new Window Read the Post in Threaded view  Post #11: My DHT experiment: Observations by Romy the Cat on 2008-11-29 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="Romy the Cat"] There were some educational for myself observations made, in some way saying something about this specific DHT, in some way saying something about Melquiades’ single stage version and the Melquiades’ full-range two-stages ...

Read the Post in new Window Read the Post in Threaded view  Post #7: Melquiades' message. by Romy the Cat on 2014-10-07 
Browse the content of the threads in new Window  Thread: To Milq builders: corrections, simplification, modifications... in Melquiades Amplifier  16 Replies 
Vincin, thank you for appreciation of my work.  A few comments and thoughts about the direction you went.   I do think that to compare 300B with your version of Milq is not proper way to demonstrate or to learn anything about sound, particularly ...

Read the Post in new Window Read the Post in Threaded view  Post #10: Re: power supply considerations & scale by guy sergeant on 2006-06-07 
Browse the content of the threads in new Window  Thread: GM70 vs. 6C33C in Melquiades Amplifier  13 Replies 
I have a preference for making the power supply a certain way and using certain types of components. If I do that and am consistent about it, I can get better results from some of those old tubes than I can from the more recent types. But hearing one...
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