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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="anthony"]Have put all my DHT's on the curve tracer to see if pairs can be matched for preamp duties. [/quote] It was very interesting to read about all of it. If you have a socket for YO186 then you can accommodate all 4V tubes and I si...
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I recorded the output of my cartridge/ phono stage/ line stage with the stylus resting in a groove of a stationary record while playing a CD at high volume with heavy bass through another path. Since my system uses tubes I was also getting tube micro...
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[quote user="Paul S"] I have stated several times that the ML2s are less sensitive to bad electricity than my phono stage, and this is true. However, this is not to say that the amps are immune to bad electricity. In fact, it is the effects of bad el...
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In my situation there is a missing link between my single ended phono stage and my balanced active crossover. Between them is 35ft. of interconnect. The missing link is indicated with "?" in the sketch.What I need is one single-ended input, some atte...
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I ripped my Cd player (to old to mention ) output stage and replaced it with SS J-fet phono preamp .I took RIaa components out .The dac puts out only 20mV so the MM stage with separate PSU and discrete J-fet regulators seems adequte for the job. Whol...
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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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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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I recently could not pass up a good deal on a EAR 834P MM, so I will have the opportunity to compare it to my current phono stage. It is funny since I had planned to listen to EAR phono stage in my system about 10-15 years ago when I lived in Santa M...
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Here is a snippet from an email from Jonathan Carr (Lyra cartridge designer) about objectives and considerations regarding cartridge loading. Most of this is old news, I only re-post it here as a convenient synopsis on this most misunderstood t...
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Paul S,I usually do not compare source components (or amplifiers or cables or etc.) in this fashion, DAC vs DAC, CDT vs CDT etc. unless I feel two (or more) of then (may) be too similar, like Lampizator and AN UK DACs I like. I prefer to focus integr...
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When the AC and the recording are good, the K&K tracks big choruses and piano fortisimos cleanly, as well, the first time in my hi-fi experience I have had a phono stage that can do this. The trouble with the really big stuff is that i...
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Ok Romy thanks for advice. I will see about the loading for my shelter, and my cable to the step-up is nothing special. I am going to listen to mono only for next few weeks and see if i find the "same character of sound everywhere" syndrome! I do h...
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N-set, if you have an unused circuit in the apt., then its neutral may be an acceptable ground path (neutral stays "on" even when breaker is "off"...).Re, the phono calibration, I have expounded the SRA at length in the "Vinyl Ceremonies" thread. As ...
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Is this not similar to gas mileage? In Germany, we have busses running on fuel cells. Is that optimum transportation? Well it depends. A Mercedes Benz E-Class automobile gets better diesel mileage than their much smaller B-Class with the same sized e...
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I have an anal fantasy of a full silver path from the cart to the grid of the input stage.This brings me to finding an ambitious silver wound SUT. There is Slagle who can make it,but I'm inclined towards amorphous/nanocrystaline core, so there is Lun...
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Ideally, you'd want to drive 35 feet of balanced interconnect with the low impedance source ( say below 150 ohms or so). How low depends upon interconnect capacitance. You can try Jensen output transformer to convert SE to Balanced at the phono-stage...
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Just tossing in as possibilities the old JAN GE 5751s. I had a pair of these that were very interesting, including excellent, very even sound density and truly great LF. The only tubes in my system now are the old, "New York" 6922s in my phono stage,...
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It is not about the LCR phono as a concept – many companies manufacture the RIAA LCR constant impedance networks: Lundahl, Tango, S&B, Da Vinci, A-D, your Allnic looks like dose them as well. The LCR filter is not complex and any manufacturing ho...
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N-set, clearly you have a much better understanding of electrical engineering than I do (as do most of my pets...)! Still, I am hardly terrified by tank circuits, just wary of inter-component/PS/signal mosh. And I really don't care what sort of div...
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Perhaps I should have mentioned before that the K&K is another spin-off of the well-received Arthur Loesch RIAA network. Also, the K&K's gain scheme is based on "classic" microphone circuits. While I am not say...
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One thing I have noticed a lot with gear that "aspires" is a ""rubber band" harmonic effect, with +/- higher or lower harmonics in preponderance as the dynamics/complexity changes. There is also the effect where the [am...
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Yes, of course, agreed and point taken. I am/will be conscious (at times) of all those things as I listen, and I remain a musical omnivore. I am pleased, though, as I mentioned, because this is the first time I have had suc...
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Romy, this whole report is just too interesting to wait for installments! I love it that you have found a way to "work with" the "effects" of the APS. But now I wonder about and I hope you will clearly address:Whether you use all com...
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How ironic that I finally got my phono running through the ML2s, and just as you say, it was not all it should be. In fact, I would have to say at this point that I am getting better sound from my crappy CD player, which I u...
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Sorry, I have a better understanding of the purpose of this exercise now.Are you making 2 new platters or is one to be the existing Micro Platter?Given that your RX 8000 appears to have a platter made of phosphor bronze (gunmetal) what is your s...
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Thank you for illustrating problems with the "approach". Now that your response has become part of the dialog, I remain hopeful to get some ideas for a "simple" phono stage that might not choke up on Bruckner or Wagner with battery power, and I do t...
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Is the "ground plane" in this case literally a sheet of copper that you run all the grounds to? If so, this may be overkill on the one hand and an antenna/noise magnet/generator on the other hand, and/or it may well make for ground loops. It is u...
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The first goal is the best sound possible, taking every advantage to get it. Since the [crappy] [wall] power source is such a big factor in the sound we get from hi-fi, I could see designing line-level stages for use with batteries as a possible...
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Not expensiveSmall sizeIrrelevant look and appearance ;)Don't know about the other specs. It would be easy to pull it out of the box and change to a bigger one with more inputs.I had to change the tubes, which were a bit microphonic, and the damn uns...
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It's a MM/MC phono stage which at maximum gain provides 74dB. The price 329 GBP, higher if ordered with dedicated PSU, but that price includes "wallwart" AC transformer. You can take a look here: http://www.trichordresearch.com/dino.html They do...
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