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Read the Post in new Window Read the Post in Threaded view  Post #9: 211 vs 845 , 212E... by cv on 2011-09-08 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
Very interesting! (and impressive construction there KO)I know this isn't quite the subject of the thread, but could you tell a bit more about the 212E amp, in particular, the regulator topology?Regarding 845 vs 211 - Romy, I suspect what you were he...

Read the Post in new Window Read the Post in Threaded view  Post #6: The “elephant sound” from 211, 845, GM70... by Romy the Cat on 2006-06-05 
Browse the content of the threads in new Window  Thread: GM70 vs. 6C33C in Melquiades Amplifier  13 Replies 
I always was “concerned” about those large high voltage triodes: 211, 845, GM70….  They kind of different… The 845 always was brutal and not elegant, 210 was elegant but not sophisticated, and the GM70 was sophisticated enough but no one build a...

Read the Post in new Window Read the Post in Threaded view  Post #7: How the “elephant sound” made “useful” by Romy the Cat on 2006-06-06 
Browse the content of the threads in new Window  Thread: GM70 vs. 6C33C in Melquiades Amplifier  13 Replies 
[quote user="Romy the Cat"]I always was “concerned” about those large high voltage triodes: 211, 845, GM70….  They kind of different… The 845 always was brutal and not elegant, 210 was elegant but not sophisticated, and the GM70 was sophisticate...

Read the Post in new Window Read the Post in Threaded view  Post #37: Re: Better among worst? by Thorsten on 2005-11-07 
Browse the content of the threads in new Window  Thread: Passive transformer based preamp in Audio Discussions  41 Replies 
Hi,[quote user="morricab"]As to the best transformers souding more transparent than the best resistors, I'll believe it when I (don't?) hear it.  You claim to have heard this but I most certainly haven't. [/quote] Well, the claim is no...

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 #20: My new Anima speakers by manisandher on 2016-11-29 
Browse the content of the threads in new Window  Thread: Greek Anima Loudspeakers in Horn-Loaded Speakers  33 Replies 
I took receipt of my new Anima speakers yesterday.Aesthetically, they match my listening room very well. Early days, but sonically, driven by my 211 mono amps with Elrog output tubes, they easily better any other speaker I've had in this room. It's f...

Read the Post in new Window Read the Post in Threaded view  Post #6: The “elephant sound” from 211, 845, GM70... by Romy the Cat on 2006-06-05 
Browse the content of the threads in new Window  Thread: GM70 vs. 6C33C in Melquiades Amplifier  13 Replies 
I always was “concerned” about those large high voltage triodes: 211, 845, GM70….  They kind of different… The 845 always was brutal and not elegant, 210 was elegant but not sophisticated, and the GM70 was sophisticated enough but no one build a...

Read the Post in new Window Read the Post in Threaded view  Post #113: Computer vs TL0 by ArmAlex on 2016-12-19 
Browse the content of the threads in new Window  Thread: High Quality Music Server / CD player in Didital Things  169 Replies 
Amir wrote:I bet you hear good sound even better than over 50k$ transports. our last test was CEC TL0-X vs my Berkeley , they sounded very similar. This idea was not shared among everybody pr...

Read the Post in new Window Read the Post in Threaded view  Post #8: 6c33c amp by KOTriode on 2011-09-08 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
Yes, it would be very interesting to hear the difference between a 6C33C amp with and without tube regulation, but also they are too many thing to try too, ... the possibility is endless here.My recent experience with two different ...

Read the Post in new Window Read the Post in Threaded view  Post #7: Regulation logic in amps and everything esle by Romy the Cat on 2011-09-08 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #38: 6e5p can drive in full amp? by Celsius on 2013-12-12 
Browse the content of the threads in new Window  Thread: The 6E5P tube data. in Melquiades Amplifier  44 Replies 
[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 ...

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...

Read the Post in new Window Read the Post in Threaded view  Post #35: Killing two birds with one stone with the 6C33C preamp by KOTriode on 2011-09-22 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
The transformer in this preamp was given from a friend who want to learn how to wind transformer. If I remember correctly it started out as UBT, they were bought (when UBT was operating in the Silicon Valley) at the company swap meet. They were rejec...

Read the Post in new Window Read the Post in Threaded view  Post #38: Re: Better among worst? by morricab on 2005-11-08 
Browse the content of the threads in new Window  Thread: Passive transformer based preamp in Audio Discussions  41 Replies 
"You need to realise that the physically larger a Transformer becomes the narrower the available bandwidth for a given construction. Due to the need to handle a lot of "magnetic bias" SE Output transformers become very large, physicall...

Read the Post in new Window Read the Post in Threaded view  Post #40: Full amp bias by Celsius on 2013-12-13 
Browse the content of the threads in new Window  Thread: The 6E5P tube data. in Melquiades Amplifier  44 Replies 
[quote user="Romy the Cat"] Celsius wrote:The problem is that my target is drive a 211  as full amp,  and my CD player  give a litle bit more than 1v to grid. What do you think    1V x 33times x 2.8 give 93ppV enought to drive the 211.  Well, you nee...

Read the Post in new Window Read the Post in Threaded view  Post #39: OK, try it, it is all yours. by Romy the Cat on 2013-12-13 
Browse the content of the threads in new Window  Thread: The 6E5P tube data. in Melquiades Amplifier  44 Replies 
[quote user="Celsius"]The problem is that my target is drive a 211  as full amp,  and my CD player  give a litle bit more than 1v to grid. What do you think    1V x 33times x 2.8 give 93ppV enought to drive the 211. [/quote] Well, you need another ga...

Read the Post in new Window Read the Post in Threaded view  Post #54: More on those Brazillian Horns!!...and Be Yamamura. by DERRICK on 2009-09-20 
Browse the content of the threads in new Window  Thread: The Ridiculous Japa-Brazilian horn. in Horn-Loaded Speakers  54 Replies 
I bought those tweeters for Be Yamamura (second hand from Paul at Wembly Loudspeakers, in London)  I also took Be to Heathrow Airport to take a plane to Brazil to install one of his truly superb VT4c stereo amps!   It was the morning of a great wind ...

Read the Post in new Window Read the Post in Threaded view  Post #72: Bias with attitude, bass and transformers... by Romy the Cat on 2012-03-16 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
[quote user="KOTriode"]Romy, in the contrary, it is very unfair to compare my 845 amp with the 6C33C. The main reason is the 845 amp used the best output/interstage transformer available, while the 6C33C's output xformer is pretty good but far from b...

Read the Post in new Window Read the Post in Threaded view  Post #43: Good and neutral by Celsius on 2014-06-15 
Browse the content of the threads in new Window  Thread: The 6E5P tube data. in Melquiades Amplifier  44 Replies 
[quote user="Romy the Cat"]Celsius, I do not know what CCS you impended, did you drive 6e5p’s plate with constant current source?*1 I also do not know/like 6e5p with battery bias. The only application that I find 6e5p suitable was the Milq-style bi...

Read the Post in new Window Read the Post in Threaded view  Post #61: Driving Miss Daisy by Paul S on 2012-03-14 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
KOT, with the ML2s I found very little difference in the sound of various 6C33Cs, but the old Svetlanas certainly "held to spec" better (and longer..).  I find the 6C33C to be more "direct" sounding than 845 or 211, but this in the context of a 3-sta...

Read the Post in new Window Read the Post in Threaded view  Post #8: Something by N-set on 2015-12-16 
Browse the content of the threads in new Window  Thread: Really Expensive DACs? in Didital Things  29 Replies 
I briefly listened to this DAC but with a balanced stage using 101D at Fikus location in his listening room (we were testing an anti-vibrational platform I and my partner have designed). The system was a complete unknown to me (Lampoizator own amps o...

Read the Post in new Window Read the Post in Threaded view  Post #9: 211 vs 845 , 212E... by cv on 2011-09-08 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
Very interesting! (and impressive construction there KO)I know this isn't quite the subject of the thread, but could you tell a bit more about the 212E amp, in particular, the regulator topology?Regarding 845 vs 211 - Romy, I suspect what you were he...

Read the Post in new Window Read the Post in Threaded view  Post #8: Re: Jumbo Sound 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'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. I've yet to hear an impressive 6C33 amp so it...

Read the Post in new Window Read the Post in Threaded view  Post #9: Sound of tubes or the sound of attitudes. by Romy the Cat on 2006-06-07 
Browse the content of the threads in new Window  Thread: GM70 vs. 6C33C in Melquiades Amplifier  13 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #17: Not necessarily. by Romy the Cat on 2011-03-22 
Browse the content of the threads in new Window  Thread: How to get a LOT of SET power. in Audio Discussions  106 Replies 
[quote user="Paul S"]Yes, we are all adults here, but I hope and pray that readers just following along and dreaming about "ultimate" systems will not take it upon themselves to actually try any of this stuff at home!  Be advised, all, that the volta...

Read the Post in new Window Read the Post in Threaded view  Post #7: Bang for back? by Romy the Cat on 2009-07-27 
Browse the content of the threads in new Window  Thread: More 6E5P-6C33C amps. in Melquiades Amplifier  22 Replies 
[quote user="vuki"]Anyway, my plan was to make powerful triode NFBless amplifier for relatively small money. I'm really satisfied with what I did. Maybe I should have done GM70 SE, but what would be my next project then?[/quote] The GM70 is a bitch a...

Read the Post in new Window Read the Post in Threaded view  Post #127: EM Shielding, do or don't? by anthony on 2017-04-23 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
[quote user="anthony"]...you've got me thinking about this now.  I'll talk to some people here and see what they think, but it should be easy enough to place a shield between the OPT's and the tube bases.Thanks for bringing it up.  I am looking for o...

Read the Post in new Window Read the Post in Threaded view  Post #8: In search of music by HookEm on 2013-04-15 
Browse the content of the threads in new Window  Thread: Lamm ML2.0 & Lamhorn/AER in Audio Discussions  25 Replies 
[quote user="Romy the Cat"]HookEm, I could only advised you on methodological aspect as I do not extend any recommendations about purchasing decisions.  The 17x15 x11 is a very large room for a single driver speaker. If you insist to use a single dri...

Read the Post in new Window Read the Post in Threaded view  Post #14: Still, with all native beauty of 7788….. by Romy the Cat on 2007-11-05 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
… I do not consider it as an interesting driver and I have a good feeling that you will review your desire to drive 2A3 with 7788. 7788 is phenomenal for different application (ultra low noise + ultra high Mu) not for driving power triodes. Jim, if y...

Read the Post in new Window Read the Post in Threaded view  Post #7: You will decide. by Romy the Cat on 2013-04-15 
Browse the content of the threads in new Window  Thread: Lamm ML2.0 & Lamhorn/AER in Audio Discussions  25 Replies 
HookEm, I could only advised you on methodological aspect as I do not extend any recommendations about purchasing decisions.  The 17x15 x11 is a very large room for a single driver speaker. If you insist to use a single driver speaker then get whatev...
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