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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Interning, I never heard about them. Might I ask you what triodes were used in this thing, how many stages and what “most advanced RIAA available” the unit use? I understand that it is passive EQ but what is so unique about it? Also, if it might act ...
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Points about the self-sound of the PH-77 are well taken, not that I'll be spending 8K on anything any time soon, regardless of its "value".My own K&K phono stage is totally Spartan, just to avoid all the circuitry that typically facilitates the s...
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[quote user="AlexBerger"]I tried Amperex ECC83 "Bugle Boy". They sounded bad in the EAR RIAA. I like more modern Amperex ECC83, Holland made with orange-red prints.[/quote]Yes, the Amperex "Bugle Boy" are horrible tubes. They have huge publicity amon...
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http://app.audiogon.com/listings/omnigon-full-function-tube-preamplifier-phonostage
Looks 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 - 6922? Both t...
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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?Probably, you will not use continuous wire from the cartridge coil, and you will probably not solder but use some sort of c...
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Rooting around for manufacturers' operating curve/info on 6922s I came across a short paper I got years ago from electronics genius Roger A. Modjeski. In a nutshell, RM talked about internal variables in tubes that affect their electrical charac...
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Sometimes ago I received an email from a NY guy that I know:
“I borrowed a friend's Sansui TU-X1 and just like I heard them at your place it sounds fantastic! What is it about this tuner? There is such an ease to the presentation and no distra...
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[quote user="Paul S"]
Anthony
Do I remember that a big part of Romy's choice for a pre-amp was based on the specific needs of his DSET Milq, with it's inter-stage X/Os? And do I remember the Placette Active Pre-amp has consistent, fu...
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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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Nope, if they said that it has 64dB then it has 64dB and I have no reasons to doubt. In reality the gain stages sum 84dB and 20Db is eaten by RIAA. I do not know how they got from 3 stages of
6SN7
84dB but if they claim that the...
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[quote user="Thorsten"]I have kept the 600R arrangement, but I cleaned up the circuit a lot. The new stuff was posted over at the AudioAsylum, not a place you are terribly fond of. If you still have the Phonostage you build it might be worth rolling ...
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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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Rowuk, we do not disagree about the "battery/dynamics" equation. As you know, the "accepted notion" from the pundits is that "battery phono stages lack dynamics", and the one expensive unit I've heard did seem lethargic, albeit in a "salon". Howeve...
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[quote user="Romy the Cat"]Did you try just for test to increase the caps value that short the plate to ground? Will it amount and the character of the noise change? [/quote]Just like one would expect: 0.1uF shorting cap gives approx 4x more ham than...
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Romy,I have rebuilt my phonostage (the pictures after update are added to Picasa):1. Fixed filament. Now a ripple about 1mV (unmeasured by my Fluke). The filter is: C-L-C-L-C
30000uf-3mH-30000uf-3mH-30000uf. I put two 3mH chokes & Nichico...
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Hi,
[quote user="Romy the Cat"]
An interesting devise, They allow to adjust the midle point of the RIAA curve. I never have seen it and I wonder why would it be necessary or desierable?[/quote]Well, a range of mono EQ curves (and o...
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1) Be very careful with use Halco resistors. They were very good 15 years back but they turned south very aggressively. I bought a party of Halco in 2005 and I forced myself to trashed them as they were very noisy. You do not use then in critica...
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Hm, I just paid attention that over 1000 people have reviewed this thread… I’m keep receiving emails form people who feel “insulted” that I did not keep the popular DL103 and DL103R at the level of respect as it treated by those Audiogon intel...
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Experimenting with Decca carts, I've temporaly disconected the SUT's and decided to check the RIAA calibrationand I think I have some (circuit?) problem.[quote user="Romy the Cat"]
In the end of everything I was able to get very nice response. The...
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Hi Jack ,Thank you for your very educational info ! It looks like you are right , and your tubes are rebranded SG13P .... Maybe a big stock of those tubes were exported , and you know them better than we do :-)And another question . You wrote :...
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Anthony
Do I remember that a big part of Romy's choice for a pre-amp was based on the specific needs of his DSET Milq, with it's inter-stage X/Os? And do I remember the Placette Active Pre-amp has consistent, fully buffered 10R out?...
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[quote user="Thorsten"]If you do, do seek out old Air dielectric AM tuning Capacitors. You only need 110pF & 330pF, both can be found suitably. Once you tuned the RIAA to perfection simply superglue the shaft in.... I used to use that trick in pr...
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[quote user="Romy the Cat"] It is not a the thread about Allnic but LCR RIAA correctors, still there was something expressed in here about the Allnic LCR phonocorrector… and I feel bad about it. It is not that I don’t think that Allnic LCR phono...
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[quote user="Axel"]is what I assume that your CD's source is all about. So it could be in deed a problem having used the 'original' master tape (analogue) which might have had a slight problem, stretched, or issues with the equipment speed (slight sp...
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[quote user="Paul S"]If you can do it, try isolating both cases/chasses from your "ground plane(s)". Use one inclusive "ground plane" for both the PS and the gain/RIAA sections, and ground this "ground plane" to the house "neutral" wire. Do NOT conne...
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The TAP TVC does happen support a fully balanced topology, for whatever that's worth. I have not discovered anything difinitive about this for myself, however. I can say that I do not consider the unit's situational neutrality as anything...
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T, thanks for educational reply. I understand what you are saying and where you are coming from but unit I try better transformer, presumably your S&B TX-102 I would not be able to correlate your observations with my, perhaps too semi-prejudicial...
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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...
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Guy,I absolutely disagree and I think there is a huge difference between lettings your wife to know that skin in her neck remind you sesame chicken and letting a play director know that his new production stinks. Of course we moderate our behavior in...
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It is fashionable among audio people to play with this analog, rewiring tonearms for instance. It always astonished me how masochistic this ceremony is and how many people dive into it completely voluntary.
Ok, let me explain you something. In MC an...
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