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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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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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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[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="perrew"]Romy,
I might be confused with the passive and active, but from my understanding you prefer your active 834PT to the passive RC network and passive LCR networks. You also prefer the passive LCR to the passive RC. So 834PT&...
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I thought of the AMR equalization curve options as I listened to a London FFRR LP (Kubelik/VPO/New World) today using my new technique to optimize stylus tracking.The FFRRs are well known to have some extra LF, all right, but with optimum VTA this re...
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Who has had success with active amplification of very low level signals (like LO MC output), apart from Boulder 2008 and super-expensive lab-type equipment?It seems like the safest path (that's still reasonably affordable) for LO MC lift-off is a (pa...
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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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[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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Romy,one thing that interest me is you use an active RIAA and the Allnic is passive circuit if I understood things?...
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Too hot to expect the best sound today, and besides I have gotten my morbid curiousity worked up about the recording/playback curves, so I fished out a few LPs mostly to hear/see how they sound with respect to the "shape" of their sound, aspects of w...
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Heres an interesting take on RIAA http://www.channld.com/pure-vinyl.html...
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N-set, the usual way of dialing in RIAA is the anti-RIAA curve, trying for null. This might be from any source with appropriate output voltage/impedance fed to the corrector input. The obvious problem with the LP is that it depends on the arm and c...
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[quote user="Romy the Cat"]Hold on, are you saying that manufacturers of phonostages who claim that they run RIAA curve with precision of 0.1db are full of shit? Ok, take the Fifths and do not answer this question.[/quote]There is nothing wrong with ...
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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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Ah, the current source!! Serge, you must be right. Ironically I did hear about this method of extracting cartridge signal by Dynavector when I used tier 507 arms but I forgot about it. If am not mistaken the Dynavector is not a phonostage by just vol...
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Yes, I know, Antonio, thanks. There are a lot of IC-based phonostages out there. I have no technical reasons to say that they should be bad but unfortunately they sound kind of “identically bad”. You see no one make them to sound in a “tailored”, def...
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I made an experiment a few weeks ago. I took 5 cartridges that I know very well and that have thier distinctive “signature” sound signatures. I loaded my corrector into my 49K 1/12Octave, 0.25dB resolution Real-Time Spectral Analyzer and ran the inve...
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Allo Romy, Air core caps? Good man! Are they for trimming or the primary RIAA? The way I see RIAA equalisation, there must be some optimum tradeoff between high R and low C (low value caps are always nice) and low R high C. Why do we want low R? A f...
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Perhaps if you build another phono corrector you could play your TT through that, then through the inverse RIAA then through the EoL corrector then the linestage & power amps etc.
Will you be listening to all of your line level sources via ...
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I have read about but not heard the transformer RIAAs and the "No R" version (or was it "no C"?), and I have seen some fairly ingenious ways to try to keep impedance at a constant 600 Ohms. But the 10k does pique my interest, because now w...
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As I said a few days back it was a big event in my life: I bought October TAS magazine in book store
http://www.GoodSoundClub.com/TreeItem.aspx?PostID=11954
Doing it a few times in year is so wonderful journey into the realm of id...
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Sine I read about the new Orion phonostage I was thinking about the whole story behind it. The whole Constellation Audio as the company that started 2-3 years back strike me as some kind of combined efforts of a group of dealer and distributors...
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Here are some commentaries regarding my “End of Life" Phonostage.
The name of this phonostage derives from many factors. I am forty, winch it more or less a half live and in the first half I was playing a lot with different audio toys. The last 10 y...
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[quote user="morricab"] Interesting test you have conducted. Were the responses mostly unflat near the frequency extremes or was there variations even in the midrange? The reason I ask is because if you look at most of the published curve...
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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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[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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[quote user="rogier"]It could be dirt (dust) in the aircaps..[/quote]Hm, a good point, I never consider how dust in aircaps might sound. I presume that it will be no difference as dialectic is air anyhow, it is beside the point that there. Still, the...
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Hm, I took the anti-RIAA signal converted and run CD player into the phonostage. The RIAA curve was fine and the effect of the HF volume and frequency-depended quantization did not expose itself. So, it looks like the phonostage is not a problem afte...
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[quote user="Paul S"]I thought of the AMR equalization curve options as I listened to a London FFRR LP (Kubelik/VPO/New World) today using my new technique to optimize stylus tracking.The FFRRs are well known to have some extra LF, all right, but wit...
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Romy,I try to remove the step-up transformers & short the
input grid, the hum has gone.Than, I did next changes:1. Twisted wire from input RCA to step-up transformers. Connect transformers input & output ground directly (not thought ground ...
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