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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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OK, I was looking today at the par of the new Melquiadeses posted above and realized they are too ugly to sit them in my room over the 4th July holydays. So, spending another fey hours I designed to end the project and put it behind me. I still do no...
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[quote user="Wojtek"] In my old email to you I've mentioned that I have a pair of monster transformers 310-0-310 2A .I'd like to use them as a main transformer for bi-tri amp configuration ,with input choke load and folowing separating (tree branches...
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hi maxx
Just found this by accident. Had similar problems in my K-horn when i started to use it higher.
I found out that the 8 Liter prechamber caused the resonance in mine about an octave higher than you seem to have yours.
That...
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Romy and Paul,
Thanks to both of you for the further input.
But...
If I do as suggested, and this removes the hiss, that's great; only one problem (forgive my slowness in understanding here); with the plugs in place, how do I then get a sign...
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Hm, have another strange problem. Sometimes, and completely unpredictable, the amp goes crazy. As you might see I have fast blow fuse in anode line and seldom plate current rises to some crazy volume. In a past I have cooked my Chinese tube:
...
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[quote user="Cosmos"]Indeed it took me a very long time to decide upon regulate or not. I ended up with regulation option to save some chassis space and weight, otherwise I would need at least 10 kilos more and 30% bigger space that would make the wh...
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OK, here are some follow up thoughts after the completion of the project. I am sure I will burn it for a month or so. I think everything will be fine, I do not expect any issuers technical or sonic. The way how the entrance to the corrector done it i...
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[quote user="Romy the Cat"] anthony wrote:Sorry Romy, I was not clear enough, but the resistor
that I am questioning is in the Fundamentals Channel (not the MF Channel as I
believe you referred to in your previous post) between the OPT and the
S2....
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[quote user="hagtech"] The issue I see is that of intermodulation distortion on the biasing of the output tube. It will effectively change HF operating point per supply ripple. Easy to understand if one imagines a gross ripple of 50V.&nbs...
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[quote user="Paul S"] Which caps exactly did you decide to try? I don't recognize the big black jobbies. Are they oilers? Are they 200V? [/quote]
I did not “decide” but went with what I had in my hands. They are the Ansars from the...
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Chris, at this point it is hard to say anything defiantly. Subjectively it sounds like the Super Milq has slightly less HF extension and transient then the regular Milq, although the output transformer of the HF channel of Super Milq runs higher and ...
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I have to admit that I hate the Altec 604 in the same way I hate a few similar drivers other companies made in the same topology. Jean Hiraga made a loudspeaker around Altec 604, I have no idea how it sounds. People who read my site know that I d...
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[quote user="floobydust"]The 2A3 can be almost as quiet, but ONLY in the dual-section paralleled types. I adopted a split balance technique. It only works with cathode bias due to the topology but it is effective. You also need a good quality filamen...
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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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The headphone amplifiers are mystery for me. Form one perspective it should be simple but from another perspective I never heard any interestingly performing headphones amplifiers. Well, I have to take it back probably as wherever I even heard differ...
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Paul, Some good valid points... yes, they've gotten much better over the years, no doubt to technology improvements. A good example is Mallory CGS caps made in the 80's versus new ones. The newer ones are much lighter physically (same p/n), hence th...
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(Romy feel free to move this post)[quote user="Paul S"]N-set, I understand you do not mean to hijack the thread with the Axiom, so I actually tried to make generic and/or thread-related observations. I don't know the 6E5P, but generic issues with sp...
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Keeping harassing different people bout the most interesting options for multiplex decoder for my Rohde & Schwarz EU-6201 I was wondering if it makes sense to me to use the Rohde. It is a very good tuner but it is not necessary result in better s...
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[quote user="Antonio J. "]MFA e-mailed me aknowledging that I was perhaps going to try the DIY way getting a "raw" transformer from S&B and offered me assistance. The "problem" is that their unit with a gain selector and load selector is way too ...
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[quote user="oxric"] As to why people are interested in the 16 ohms drivers, that is only true of some. The idea is that if the Vitavox S2s are being used, and a single amplifier to drive the different channels, it seems to make sense to go for 1...
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Alex, why do you think you need them? I've never experimented with snubbers at the SiC's directly. I only put two input caps right after the bridge and a dropdown resistor which I use before the input choke. IIRC the value is 10nF/1500V. This rel...
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Hello, would it be possible for us to see the diagrams and schematics behind the Zarathustra II in the same spirit as the Melquiades was conceived, noting that the best of ideas are formed with the purest of sentiments?[quote]It is Dima’s and my stro...
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I probably never get tired to mention the stupidity of the folks
who write for Audio publications. This time my hero is Marshall Nack of positive-feedback.
The hero just published a review about the Lamm updated preamp L2:
http://positive-feedba...
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My definition of “Japanese sound” is different than yours and I do not feel that Japanese sound is characterized by “tilted up high frequencies character”.
http://www.RomyTheCat.com/TreeItem.aspx?PostID=1959
I think if you are acc...
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Ok, here is the final frequency response for each Super Milq channel. The souse was Denon CD player that rolls off a little atop. I did not measure the tweeter as I have no tweeters transformer plugged in yet. All secondary in amp are grounded. The m...
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[quote user="Antonio J."] The builder regards VR1 more like an "offset to 0" adjuster than a bias control for the 6E5P since its working range is quite narrow. He asked me to know from you if along the 6E5P's lifespan it needs further adjustment...
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A few days ago I decided to learn how the new Melq sound and made a quick speaker level crossover for one of my Macondo’s channels, putting the new built Melquiades to drive the acoustic systems that the SET meant to drive (Before it was 82dB and 88d...
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It might not be necessarily the new wire. With analog there are other billion reasons why it might not sound as it should. Still, I personally can’t stay listening “new” wire with MC cartridges. If you recently futzed with the arm wire then you...
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Scott, you see, this is the problem. You do not talk about the problems “as is”. All what I was asking was the acknowledgment/recognition/identification without context of loudspeakers. Your listening/assessment awareness is completely grounded to th...
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Thanks, Greg
[quote user="Greg B"] Cap and L-pad resistor quality is critical even in the cheaper models. [/quote]
I do not use any L-pad resistors with tweeters. If you need to reduce the tweeter output I drop the caps and move the tweeter up at t...
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