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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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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="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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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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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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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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[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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[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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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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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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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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Thanks for the comments Romy. Would appreciate pointing out where the schematic is for the 7788 phono preamp or even better your friend´s 7788 mic preamp schematic. I can use the phono stage circuit minus the RIAA as a starter and th...
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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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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 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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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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The "lack" of HF is definitely one of the wonderful things that makes one think of spending 30K on a phono stage. Glad to hear you are "suffering" a similar "dirth" of HF [noise] with your DIY corrector.I wasn't going to say anything, but I won...
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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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Of course I don't know if this also applies to your other cartridges that are working correctly through the same phono stage, but the VTA/bad electricity "problem" is peculiar to long line contact styluses. And as I also noted recently, po...
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Thanks for the tube gel sockets/absorbers hinting, Roman... Thomas had to use such a vibes taming mandatorily, being both 801 AND 437A tubes rather microphonic prone...Using his clever design... ZUT! Completely silent... also, unfortunately, he had t...
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All the research and theory; all those exotic, expensive little bits and pieces; too bad there's no way to tell if a cartridge will work until you try it. And then there's precious little you can do to fix it if it doesn't.In plotting an end-around,...
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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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The Sussurro has an unusually wide loading range listed by Soundsmith, ranging from 470 ohms to 5k ohms. It is possible that more recent models have a somewhat tighter range between 470 and 2k ohms but I am not positive. The capacitance of Soundsmith...
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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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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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Discussed many times on this site is the "dedicated ground" (aka "bleeder"), which generally includes a driven copper ground rod and a wire to it from the TT, arm, SUT, and/or phono stage. The idea is to get the resistance as low as possible, so the...
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I just saw a post in memory of Kevin Carter, who passed away early February this year. I guess I was not the only person who enjoyed talking with him and doing audio business with him. I think quite a few people who visit this forum got Luhndal trans...
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