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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Dear Romy, regarding your efforts to solve variations in mains power supply, there has been an interesting thread on RAT related to the use of toroids as power transformers that morphed into a discussion about the level of DC offset in mains power su...
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To keep with Romy's spirit of sharing his work, I have attached a file of VER 1.0 of the DSET Power Supply. There are quite a few differences to Romy's published schematics but it is basically the same beast. You will notice a lot of power transfor...
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Romy,I already send money to Pieter for OTP transformers. Now I need power transformers and chokes.This is Pieter propose: (He look at the schema)2 x power supply transformer - 12,6V/5A - 6,3V/1A2 x ...
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I am far from the best person to comment on it but your biggest problem would be the (huge/gigantic) power supply. And I confess I do not know if it is possible to parallel more than two output valves on SET fashion, I never saw it but the ultral...
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It looks good to me. As you can see I have left plenty of room to add a couple of more channels.The bottom level contains the power transformers and relays. The diode bridges hang from the the middle shelf and the chokes and filters are on the top ...
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Well, I have little comparative experience of this cos the required chokes get huge and expensive, but some people I trust swear by low DC resistance chokes; they feel that this parameter is so important that they will sacrifice inductance to achieve...
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I have a preference for making the power supply a certain way and using certain types of components. If I do that and am consistent about it, I can get better results from some of those old tubes than I can from the more recent types. But hearing one...
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It is kind of done for one channel. It does not look sexy by I care less about it at this point as the PS sits at the bottom shelf of my double-amp stand and practically is invisible. The layout is not perfect as I did not want to drill a lot of new ...
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Well, the subject of capacitors in that PS should be resolved. We discussed it a lot with Dima and he feel that I am fool all my idea to try in this supply “minimum capacitance”. He actually does not believe in small capacitance, he has a vision how ...
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Dear Romy, your adventures with PurePower appear to be frustrating. As an alternative, have you considered contacting the equipment maintenance department of a local hospital to discuss equipment that they use to ensure pure power to instrument...
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To keep with Romy's spirit of sharing his work, I have attached a file of VER 1.0 of the DSET Power Supply. There are quite a few differences to Romy's published schematics but it is basically the same beast. You will notice a lot of power transfor...
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Yesterday my machinist informed me that the End of Life Phonostage’s chassis will be reedy next week. So, I desisted update the power supplies of the thing replacing the FRED diodes with those no reverse/forward recovery Silicon Carbide Schottky diod...
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I have film in that position; I actually meant the 1000uf+ caps in the power supply. Hard to get those in film.... ...
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I was playing with new power supply over this weekend, trying to optimize everything. First I got rid of bleeders at all B+ - it has enough critical current with them according to my measurements after the bride. All supplies after the first ...
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Those who flow what is going on with my 6-Ch Milq know that for sniggle driver stage I this revision I went what for non-electrolytic capacitors. I use a mandatory for me input choke with 200uF on PS side and then 100R and 100uF on the amps side to g...
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[quote user="hagtech"] It's difficult for me to guess exactly what the possible sonic effects of the ripples would be. I see a tube operating at a fixed point, having a particular distortion spectrum. Say -42dB 2nd harmonic. Then, t...
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Here is a semi-final draft of 6-chennals Melquiades Power Supply. Since I use my site pretty much as a notebook would like to have the diagraph posted in this thread for my personal references.
http://www.RomyTheCat.com/PDF/6way_Melquiades_PS.pdf
A...
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[quote user="drdna"] If you were using, for example, the Kron KR 2A3, you would not be commenting on the sluggish liquid sounds, and it would be very much more competitive with the Melquiades I am sure of it. Adrian[/quote]I doubt swapping...
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Hi Romy,I am building a modularizable version of the Melquiades (i.e. it is full range, but one can add more channels to it) and therefore wish to have the power supply in a separate enclosure. This raises two questions:1. From what you say, points M...
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I was looking into the power supply situation with my DAW and was wondering what viable options exist out there. Currently, I am using an internal 600w pc power and cooling unit. Apparently there arent many out there. One I found wa...
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[quote user="manisandher"] The only advantage I can see really is in the dedicated power supply... possibly. [/quote]
The subject of power supply in computers that run sound is complicated subject and frankly I never heard anyone talk about it...
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I was asked for more information on my power supply regulator, which allows the original 100V power line (Japan) to be plugged directly into a 120V line (US), while greatly smoothing the ripple going to the motor.
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[quote user="cv"]You may wish to apply similar tactics to the power supply (low DCR inductors) if you want to be really surprised...[/quote]What do you mean, Chris?
I usually use my input chokes 4-5 times of critical inductance and twice of rated cu...
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As all the parts for the full range Melquiades are making their way to meet me,I'm faced with the need for a 12v-5v service power supply (fan , hour meter, LEDs ).How to approach the issue ?1.buy regulated switched (and cheap) power supply and be don...
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DA, I would not use any switched power supply, not to mention that they do not need to be regulated for LEDs, relays and fans. I do not know if you build a full range Milq or more complicated multi-channel version. If it is a full range Milq with onl...
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I am looking for a good external power supply for ATX motherboard and Sotm pci to usb card.i need 12v, 3.3v , 5v, -12v , 9vsometimes i think if i use CEC TL0-X power supply it may help but i did not measured it's output voltage.CEC TL0-X has 4 transf...
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Hi All,Can anyone please help me with this?I have a client who has a Lavry Da924 and someone before him has heavily modified the power supply board.Could someone please help me identify the 4 requlators in the picture along with the power supply boar...
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Depending on the UseCase, many things can influence the sound. Rectifiers, snubbers, impedance, corner frequency, speed, an inductor in series, regulation, isolation from the mains grid all are parameters to consider.I do not know of any really serio...
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[quote user="N-set"] You always repeat that you do not listen to the power supply thanks to your "isolating" PS philosophy.This is a super attractive thing worth all the blood, sweat and tears! But then at the same time some disturbing notes come tha...
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Two Questions:1) Would it be difficult to replace the switching supply with an external linear supply. You could even get an adjustable one and play with the voltage.2) I have emailed PP three times whether their units can accept 120V balanced power....
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