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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="haralanov"] I will not call this excitement, let say it dynamic stability. [/quote]
Hm, the “dynamic stability”. This is a new objective…
[quote user="cv"] I suspect [David]he feels more comfortable with coils running at low vo...
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[quote user="cv"] I think the main advantage of the EM is reducing flux modulation. There was a post recently by one of the attendees who went with Feastrex claiming that Dr Kilppel (of famous measurement tools suite) measured one of their drivers an...
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Yesterday I got two emails asking me about Lamm ML3. I replied as I usually do, saying that I that I do not practice in satisfaction in audio-consumer curiosity. Still, it made me to think again about a hypothetic amp around GM-70.I am not a fa...
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[quote user="jessie.dazzle"] You might try the Foam Factory; they are easy to deal with, inexpensive, have online ordering, quick turn around and can ship anywhere.They are NOT a typical audiophile-oriented acoustic room treatment supplier. Never...
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A year or so ago I published the evolution of building my full range Melquiades amplifier:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PostID=2502
Now, I am staring a thread where I will cover the progress of building Dima’s “Zarathustra II” ...
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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 ...
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[quote
user="anthony"] Then
the AC-DC conversion on the first floor, filter caps and output transformers on
the third level with the amplifiers sitting proud on top. I don't want to
see any caps or transformers...just valves.[/quote]Possible, ev...
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[quote user="JLH"] I do not believe you fully understand what Danley is doing with the Synergy horn. [/quote]
Nope, I do not. Well, I understand it but I am not willing to acknowledge that I understand it as the Synergy horn idea looks too fre...
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[quote user="Resorob"]I realise that this is a very old post, but you might want to take a look over here=>> http://www.valvediy.com/simplexpg1.htmlThe article can be downloaded as PDF, the writer Ari Polisois developped a new kind of transform...
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[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...
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[quote user="Romy the Cat"]I got my last PP2000, after the repair was done. My second new unit works since I got it repaired; it runs the whole playback, sounding very well and my attempts to add a second PP2000 led, as I described to worsening o...
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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="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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Hi Thorsten,
Interesting preamp ideas.
The Silvaweld is also using some rather interesting ideas. For
example, the power supply is all tube (ie. rectrifier and regulator)
with a large choke as well for filtering and using a 300b as the hi...
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This weekend I made an interesting experiment. I had a visitor yesterday. The gay is not what I call overly critical and overly demanding listener but he is not a typical Audio Moron and has from my point of view a proper and sane react...
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While the APS guys trying to figure out why this unit can not handle power (which more likely involved a phone call to China :-) I decided to give another try across everything, repeating my last listening, this time in relaxed environment with diffe...
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[quote user="Romy the Cat"]Generally I like it but I have some concerns, whatever rubber
feet and decompiles you will be using you will not defeat the vibration if you
have a few transformers and a few 500A input chose sitting at the bottom. You
w...
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[quote user="Romy the Cat"] anthony wrote: Then
the AC-DC conversion on the first floor, filter caps and output transformers on
the third level with the amplifiers sitting proud on top. I don't want to
see any caps or transformers...just valves.P...
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Thank you for the comment on this amp, this is my first time of using the 6C33C tube, I decided to build this amp after reading about the Melquiades, this amp is just a quick experiment on the 6C33C sound, since I have...
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[quote user="KOTriode"] Thank you for the comment on this amp, this is my first time of using the 6C33C tube, I decided to build this amp after reading about the Melquiades, this amp is just a quick experiment on the 6C33C sound, since I have a s...
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[quote user="cv"] I've only heard the 801 in class A2, but I can easily imagine that the 10Y or 801 with nickel output would offer the purest possible sound in the 1k-10k range, such that it is the S2's true voice you are hearing. It's something ...
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Generally I like it but I have some concerns, whatever rubber
feet and decompiles you will be using you will not defeat the vibration if you
have a few transformers and a few 500A input chose sitting at the bottom. You
will take a statoscope and y...
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Like I’ve said, my aim was to find/build a pair of
speakers that could be driven “full range” by one of my Marantz MA-9S2 amps per
stereo channel, and these speakers would have to give me greater insight into
Bruckner in order to fill the bill. I ...
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Interesting….. It is interesting to think about the relational of Melquiades slow take-up. I think that major contributing factor is that guy who calls himself Romy the Cat. Really, I think it’s it. The people who are capable to build amplifiers more...
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OK, here are my thoughts for today. Below is a very simplified schematic of Pure Power 2000 regenerator. I do not know if it is, but I think that it is how it works. I do not think that it is different from any other on-line generator. At the li...
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1) GND NOISE
After more experiments, I can proclaim a victory over the 100Hz noise on my End of life phono. For whatever reason the GND connection does not want to run in a close physical proximity of the line and n...
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It is not US’s Fox News and not Stereophile and there is no need to pull the fractions of "stupid" soundbytes to prove any agendas. Anyone whoever are frequent this site know in context of what the said was said. Most important that I know what ...
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[quote user="cv"]On the matter of the DHT having a plate resistance of 500-700... you do realise that running the 6E5p with an unbypassed cathode resistor is giving you an effective Rp of about 12k, right? The formula is, IIRC, Rp + (mu+1)Rk.[/qu...
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My string quartet have just spent 6 days recording haydn and being assaulted by nasty Genlecs.
I can assure you that this is NOT what I want my system to sound like.
(Actually I sort of began to see the point of them after a while.. but
that's ano...
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Audio people frequently go astray in their thinking and actions and this creates a good breeding ground for all possible audio sale opportunists. I would like to explore one moment that has not a lot of public attention and to look at the moment slig...
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