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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="drdna"]This sounds like an interesting idea, especially since it eliminates the RIAA components. Eliminating components is usually a good thing. However, at the "entry level" price of $8,000, I don't think I will be buying one any time s...
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[quote user="drdna"]This sounds like an interesting idea, especially since it eliminates the RIAA components. Eliminating components is usually a good thing. However, at the "entry level" price of $8,000, I don't think I will be buying one any time s...
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[quote user="outopos"]Hi Romy,I am new to your site. I have read some of your postings (including other sites) with much gusto.For the digital LP recording, I am (was) tempted to do the same, but given the fact that I have absolutely no personal ...
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Roman,[quote user="Romy the Cat"]Tm I ma glad that your “Manhattan project” is over as I was a little scared….[/quote]
As you well know, it ain't over till the Fat Lady sings.The "Manhatten Project" will be back.[quote user="Romy the Cat"]This phono...
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Thinking further about what AMR PH-77 is trying to do some ideas come to me…
At my photography life time when we use to shot on color reversal films we included a gray scale. I personally never was huge fun of this practice as the E6 process ...
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I'm precisely fighting with dialing-in the RIAA....I tried to follow (parts of) Romy's description earlier in the thread, but the anti-RIAA method and test LP give me a huge difference, much bigger than 0.2dB (rather 10dB or so):what was +/- flat usi...
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hopefully building an air-cap phonostage doesn't get prohibited.., i 've built one too, this time with a different tube and values but the same principle (in Miller-capacity)With kind regards, rogier...
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Hi Romy,I read about EAR834p modifications in number of forums. And I never found any explanation how does RIAA feedback work.Only from you I heard about Miller capacity that used in this RIAA.I tried to do my calculations and as I understand the Mil...
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Keith Cooper mentioned today the AllnicAudio’s 1500 phonostage in the Cessaro thread…
http://www.allnicaudio.com/E/e_pdt_ampli_H-1500%20II%20SE.html
I know the AllnicAudio, I use their tube sockets, and they are very good. The AllnicAudio use...
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Heres an interesting take on RIAA http://www.channld.com/pure-vinyl.html...
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Hi Romy,I am new to your site. I have read some of your postings (including other sites) with much gusto.For the digital LP recording, I am (was) tempted to do the same, but given the fact that I have absolutely no personal experience in digital audi...
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Roman,> Any IC-base RIAA corrector should cost $30, with no expiations.Now now.... My "Analogue Addicts Phono Stage" is Op-Amp based and requires at current OEM bugetary pricing in 1000pc lots of $12.25 each. Add Tinfoil & Polystyrene Capacito...
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a Hong Kong-based company DIY Hifi Supply is selling RIAA EQ modules, the first modulesthat I have seen at 10kOm. It is something that Thorsten did not do commercially… but if the silks sound good then it might be VERY interesting. Is anyone kno...
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BTW, the hoodlums who are interested about Inductive RIAA might fins this link useful:
http://digilander.libero.it/paeng/inductive_riaa.htm
The Cat...
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I am the example of the vinyl tube RIAA correctors explain torsion phenomena in the audio. But apparently the standard way of thinking of engineers do not allow them to understand the obvious ! Then Thurs ochastota second pole has an optimum at 501.1...
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Tm I ma glad that your “Manhattan project” is over as I was a little scared….
Well, I always thought that I have an open mind and I would not mind to try it. Unfortunately I do not do SS as I afraid of it electrically…
This phonostage of yours, is ...
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All records, particularly from good period, were recorded at different equalization. Even the records that were RIAA marked were in fact WAY off…How to deal with it? Running a feedback to high impedance, in the way how it made in EAR 384P, permited u...
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[quote user="perrew"]Romy,one thing that interest me is you use an active RIAA and the Allnic is passive circuit if I understood things?[/quote]
Perrew,
Among the none-commercial, home-made correctors here is my evolution of phonostages.
...
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Paul, I do not think that “before or after RIAA losses” requirement has any merit as no matter what kind type RIAA filter is being used it always will lose around 20dB. I do not think also that there is a “safest path” or “reasonably affordable”....
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It can take me months to pan randomly through a given issue of Stereophile, but Fremer's review of the SS Vitus MO-P201 phonostage caught my attention this month.Mike actually clearly states that this 2-box item is better than the Boulder 2008. Well...
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[quote user="Romy the Cat"]
I never had a lot of trouble with high transconductance tubes. I use the EC8020 a lot. Stefano, you might look into this EC8020. I never seen it but just looked into the datasheet and it looks very interesting tube and i...
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[quote user="Thomas Mayer"] I never had a lot of trouble with high transconductance tubes. I use the EC8020 a lot. [/quote]
Stefano, you might look into this EC8020. I never seen it but just looked into the datasheet and it looks very interest...
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[quote user="Paul S"] http://app.audiogon.com/listings/omnigon-full-function-tube-preamplifier-phonostageLooks like a serious effort that has been kicking around for a while.What tubes are used? Are they twin triode, like 12AX7 or - more likely - 692...
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[quote user="Paul S"]But why would you consider brass connectors because of 95% of boutique RCA if the idea is to wind up with the best signal path?[/quote]Of course not because of that! The ideal would be the connector I've shown but made with pure ...
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I'm precisely fighting with dialing-in the RIAA....I tried to follow (parts of) Romy's description earlier in the thread, but the anti-RIAA method and test LP give me a huge difference, much bigger than 0.2dB (rather 10dB or so):what was +/- flat usi...
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Paul,The gain of my phono stage has the RIAA loss factored in. Without the RIAA loss counted, the gain would be about 66-68 dB. [quote user="Paul S"]I have never used the 417 or 437, but I have heard plenty of whining from folks who do. They often p...
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Looks like another case where clean AC wall power is demanded and supposed. Since they use triode output, I wonder if the "gain path" of the pentode is "wired triode", as well, or if they just want the extra gain to scrub in the upcoming RIAA; or ma...
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[quote user="Brian Clark"] Whereas I do. deParavicini's worked on designs in Japan over several years and became familiar with the research going on there in the Seventies which culminated in identifying the HD decay-spectrum as a key indicator...
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...future subjunctive...Romy, I am not sure that the first part of your response actually addresses the first part of what I was talking about. So, I +/- repeat myself:As an extreme example, if I see a claim of "80 dB gain" for a phono stage, it is ...
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n-set, I think the precisions of calibrations that are trying to accomplish is absolutely irrelevant and in a way self-serving. Individual cartridges have huge frequency deviation and the way how individual LPs were cut has huge frequency deviations....
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