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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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...but it will take me N-years and I'm in EU :)I could make some preliminary steps this Easter, talk to my winders about transformers etc.I'm for sure missing the FW and out put cores (AMCC800A will not support 120H at 300mA, low DCR), but getting ma...
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I've run into that yucky place where words get in the way of ideas.The mastership is what i'm after. My problem has always been the electronic side of it. I bet i could design a driver that would get me as far as a driver could, but i'm always swimmi...
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You would not have ‘limitations imposed by of a pair of SET amps such as the ML2s”. ML2 would do fine, juts make sure that it would be older ML2 before 2001-2002 production. You try the Melqs then, the parts are not a problem at all. Everything is ve...
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You had mentioned the dry cells before but I was unaware of them.I went with the LiFePo the fellow recommended. I had ordered it before you posted this.The key is depth of discharge and I am not sure if they are specifying this. All of their specif...
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What an incredibly cool result!!! I retrofitted the Rohde & Schwarz decoder with a few changes and it throw a very very very nice sound, in fact even better then I predicated. The Decoder has a SS single-end out stage (not PP) with a high-heated ...
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Okay, today I hooked it up and have spend some time listening. The change in my system was very dramatic and positive. First of all, it seems suddenly like a good electricity day. The noise floor dropped out. The timbre of the music and the body ...
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I am not sure who those people are. It might be Arthur Loesch or someone who cashes out on Arthur Loesch… it might be whoever and I have no idea about the credibility and seriousness of those people. I heard Arthur Loesch does not do Audio anymore, s...
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Here is another advantage of multisampling and DSET in particularly. There are many moments in amp that in one or another degree affects transients.The capacitive coupling for instance works fine but as long the amp sits in class A1. As soon amp hit ...
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Interesting,
Turned today my playback - the fist time after a week of break. What a miserable sound!!! I will keep it running all weekend and I hope it will be better tomorrow. In the posts above we blame capacitors in the phenomena but I wond...
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I am finishing us to setup my listening room and I have my PP2000 blowing up sometimes (go to protection bypass mode) when I use powerful SS amp for ULF along with Melquiades and the rest of the systems driver from one single PP2000. So, I guess I wo...
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Hi Paul,The net gauge for one cable of the 140 strands of #40 stuff is #15 AWG, as far as circular mils of area vs current induced heating goes. The surface area is some 13 times that of a solid #15 gauge copper wire. A minimum of 10 times the surfac...
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Look at the solution in a different manner.Regeneration will typically not be able to service large power transients thus, they are best suited to SET, i.e. constant current systems. Similarly any control loop cycling will usually be heard...
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This is classical common mode noise interference on a common supply. This type of noise will pass right through any power conversion technology and in both directions. Due to the timing variations, I would expect it to be a little bit of mains inte...
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[quote user="Romy the Cat"]Well, the StormTank is currently is being sold for $30K.[/quote]Oh well, I can forget about buying one to try it out...[quote user="Romy the Cat"]The PurePower has a bank of caps that shunt the battery. Intellectually, it
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[quote user="Romy the Cat"]I do not exactly comfortable with oxric’s preoccupation with “parts”...There is nothing wrong with the selection of the parts that I provided; in fact I personal feel that they were the right parts at that time. So, with th...
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[quote user="Romy the Cat"]IIs it possible that the methods of sinusoid construction are mater – so where is the causality? [/quote]There are at least two possibilities:
1. The perfect sinusoid unmasks the compensation of the system for imperfect po...
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Romy, thanks, as usual, you seem to have been right. The system is on and I just checked V2 voltage; its way off, above .4VDC, so I grabbed a hot pad from the kitchen and rocked the V2 tube. The socket made the familiar a dry creaking sound and see...
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Here is the general specification for the parts that I used. The selection of the parts implies some liberty of course. It will be your amp after all, not mine - do whatever you wish. In some case when I feel that requirement is critical I will stres...
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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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Measet, I will try to find a photo and the schematic as you requested, but it may be a while before I can locate them. Plus, we are still digging out from Hurricane Irma down here. As I recall, I beefed up the raw D.C. supply and then used an LM317 r...
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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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My reference to air caps was purely a tongue-in-cheek reference to the voids in the coil. Of course the parasitic capacitance due to the propinquity of winding layers would dominate and here the dielectric is quite often Mylar.
It's just that the ...
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[quote user="haralanov"] According to a friend of mine, who has a lot of experience with GM70, this tube starts to sing only with (very high quality) interstage transformer coupling. He told me that when it is used with coupling capacitor (as is the ...
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[quote user="Dominic"] I've run into that yucky place where words get in the way of ideas. The mastership is what i'm after. [/quote]
Yes, it is the yucky place where words get in the way of ideas. I did not use “mastership” in term of skills or cra...
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[quote user="Romy the Cat"]So, you feel that high voltage filedcoil do excite the electromagnets driver somehow?[/quote]I will not call this exitation, let say it dynamic stability.[quote user="Romy the Cat"]What voltage you feel is appropriate?[/quo...
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In your earlier piece about how to use the S2 'properly' you wrote"Whatever happens between the 400 and 2,5 is pretty much unnecessary for you garbage. So, get any known to you soft capacitor of 3uF and place it in series with the S2 driver. This wil...
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I do not know. People say a lot of words about jitter and speculate a lot about the topic. I never heard from anyone any real definition how a high level of jitter sounds in realty. I heard 4 (!!!!) complete contradictory descriptions how high level ...
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[quote user="steverino"]Well, the circle is unbroken. Romy started his audio journey in a basement somewhere tinkering with this and that. He rose for a time into the light and now has descended once more. However this time it is called the Bunker. W...
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[quote user="N-set"]… I think that there is something more interesting going on here: what you have hereis rather a rare instance of an intelligent bypassing… [/quote]
Yes, it is highly intelligent and looks like it is highly effective sonically. It...
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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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