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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Well, I have post able a number of articles about different aspects of Purepower 2000 operation and sound. I could make a few more but I think it is enough for now. I would like to drop a few general observation and conclusion.
It was a good sign th...
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[quote user="haralanov"]And the very same is with electromagnets. With those so widely used 12V power supplies (Fertin, Feastrex for instance) the sound is always softer than it should be in reality with severally restricted dynamics and transien...
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Well to pile up superfluous things into audio components in order to make products more expensive is not alien thing in audio. My question was not about to mock the Raven company. It might be fine TT, I do not know anything about them and I do not p...
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Dear Romy,The tracks are correctly listed.Yes, the tracks are varied and some are not good recordings at all. BUT if you want to listen to Billy Bean play guitar or you want to hear Louis Stewart's first recording as an 18 year old then you hav...
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[quote user="alexd"]We are small company, dedicated to creation of highest quality audio products. Analog and Digital. We have auditioned many music servers on the market.However most of them do not sound as good as good quality 16Bits cd transport. ...
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Although the spiritus movens of the whole idea seems to have found thebass solution, the idea continues to live.Thanks to the invaluable help of Stephie B, I've comeback to the GU81M likea boomerang with some progress. There are 3 new things:1) FFT v...
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Ok, I do not know what it was: was it DHT, was it 300B, was it some other specifics of this given amp or whatever… but those two aspects that I named: intentional density of colors and randomness of pace are something that I would like to exercise in...
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Ethan,
Since I published the article “Preamplifiers: keys to mystery” I received many emails from my site visitors asking about Lamm prams and questioning my remarks in comparing what I said to “data form other sources”. Some people disagreed or sur...
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[quote user="Romy the Cat"]In the light of my forthcoming move I deal nowadays with much more prosaic problems then NASA's Mars programs. I for instance am trying to strategize what alternative power I might use to power my sump pump and am tryin...
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John, what you say
about power factor correction is completely accurate and very much makes sense.
There is a many ways to do it BTW. You can do it with caps compensating the
inductive load, you can do it with filtration or you can add active SS c...
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Somebody from AA was asking about electromagnet. The subject pup up here from time to time but this time Bruce Edgar uploaded an interesting comment. Bruce is not a typical AA Moron and if he says “inaccurate things” then it is not due to ignoran...
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[quote user="Romy the Cat"]Well, they technically not Lpads but juts regular attenuators
even though they connected in “protective mode”. You can go with stabilized impedance
to maintain the high pass filter over the coupling capacitor to work prop...
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[quote user="steverino"]Well I meant that in cases where the AC power wasn't simply larded with grunge but was irregular with outages you didn't need to be an audiophile to appreciate the product. Of course audiophiles find all kinds of things essent...
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[quote user="anthony"]In the 6 Channel Version of Super Melquiades
thread at post #89 you mention trouble you
were having with some NC relays that you were using to disconnect some power
supply bleeder resistors when the amp was turned on. When t...
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[quote user="son"]Its very clear right know,so i decide to build with 12,6v in series….[/quote] Son, when I proposed the series configuration I thought that you have already have an amp and would like to convert it to single plate configuration. Howe...
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[quote user="coops"]Romy Hi, Ralph installs every pair of speakers ,I know that it can take a week or more to install and optimise the larger systems. There are plans for amplifcation , he is working closely with Mr Park of Allnic Audio. M...
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Power from the company grid is usually pretty decent in most respects, or at least it used to be. In the last 25 years or so the average home has seen an increasing number of devices which have switching power supplies (computers, monitors, etc...
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Those both look fine, but all your voltages are hot...all of them. From afar it seems as though the primaries are not correct for the mains supply by about 15% eg. wound for 200V primary but you have 230V, or something like that. Where I am has nom...
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This is correct in that a local stable power supply is the goal, and the question asked is how to accomplish this given a fluctuating supply from the grid. The answer repeatedly has been an attempt to essentially create a supply that is either physic...
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[quote user="Paul S"]How do I hate DIY? Let me count the ways...[/quote]I hate it just as much! Paul, thanks, but most of what you are talking about has been already addressed and described. Perhaps not very visible frommy pictures but I'm a very poo...
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Hi N-set,Yes I added big cap bank to the second stage cathode. Yes it is possible to use filament power supply for fixed bias like Romy did.But I have a stereo EAR834p with a single filament PS. So, I was afraid that one PS for both channels can caus...
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A week passed since I updated my Lavry-924, what a sound! If before the DA924 was just the most advanced and the most interestingly designed multibit with excellent sound then now it is becoming the most advanced and the most interestingly sounding D...
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I guess I need to try out some more samples. Only have a few here. And only one has a long time constant 5kHz ring. Heaters are 6.2Vdc with 20mVrms sinewave ripple at 120Hz. Fed from schottky - L - C. Other side of heate...
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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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http://www.angelislabor.com/gabriel.html
"A true reference turntable equipped with a base that can accept up to four arms. The materials used include aluminum, bronze and stainless steel. The turntable and arm are totally decoupled at several points...
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reference on current statehttp://tempuri.org/tempuri.htmlScope on the power supply out seems pretty steady......
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Hi Paul,My question was of cause about my phonostage based on EAR834p and "End Of Live" modification with air capacitors and LCLC + 0A2 power supply.A couple weeks before I increase the second stage ECC83 cathode capacitor value to 43400uF (Kaisei no...
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[quote user="guy sergeant"]I'm not really concerned whether passive eq no feedback pre-amps have recently become fashionable. I've been using them for 15-20 years. They've always sounded more natural to me. Most commercial implementations that I...
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Now, this subject made me remember (apparently) Supermicro do custom motherboards, even just one.Would be interesting to try a very minimal motherboard with a very low clocked processor, PCIe M.2 support (or even DOM module), RDIMM, and with just a I...
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Hi,It is not about bit-perfect thing but a practical one.The Mopidy is just a server like MPD however it is being made to support plugins. I did not dig into it yet and I do not know the plugins currently available but Spotify and Soundcloud what are...
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