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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="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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Dear Romy,The UPS units are being used in their normal way, as line interactive. The voltage waveform supplied by the Powerware 5115 is a sine wave. This is described briefly in the manual and was important information for me pre-pur...
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Peter, I wish I had more confidence in the amp's power supply as significant proof against the full range of AC power nasties. In fact, I have long had the sense that there is such a thing as "over-regulation" where hi-fi power suppli...
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Rowuk,I think that is a good thought. I think power supplies are an afterthought to most audio designers or they think about it in simplistic terms such as bigger is better. I hate to confess this in a public forum but I have found better sonics resu...
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Seems totally doable to me; you'd just need 12 and 5 volt DC output having adequate current delivery, and a few Molex connectors.
Having said that, I notice no difference when switching to battery when using a laptop model to run the external driv...
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That's a whole lotta Bidat you've got there, Romy. By contrast, I'm guessing the 1-box iDAT-44+ (not including its wall wart) is smaller than the box pictured above with the torroidal tranny in it. The torroidal tranny inside my...
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Dear Romy,It may be worthwhile to check what transformer is installed in your DA924 because Lavry did change over to torroid transformers from the laminated core power supply transformer. Also it is a good practice to periodically ship the...
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Romy, would you mind elaborating on specifics of your power supply? My Bidat is going to John in a couple of weeks and I am finalizing my thoughts. Thank you....
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decoud - thanks for the link, nice and minimalist,but as minimalism is no longer part of this project I need Unfortunately a more complex power supply.Romy -I'm building a full range amp. But...I need a small foot print so it will be high and relati...
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[quote user="Romy the Cat"] There is no aspects of minimization
of the inductor size. You can go to 30K, or 50K, or 100K input LPAD. The LPAD (which
is not inductive switched attenuators with good resistors) anyhow sites behind
the filter, so the ...
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Romy, thanks for the info on the chokes in the fullrange Milq.Today I have ordered more Milq parts this time for the power sequencing and bleed down. I decided to go for the relay sequenced bleeders for all four power supplies and figured I would be...
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I have often thought that the necessity of a UPS comes from inadequate power supply design. Sure it is easy to buy a product to insert between the audio system and power line but at the end of the day, are we simply giving our power supplies an easie...
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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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Dear Romy,I do not know who uses the PowerStation75 so I cannot say whether it is helpful. I use the Powerware 5115 UPS boxes for managing the mains power supply [details on www.nps.com.au under Products and Line Interactive UPS (Corporate...
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I was slowing mingling the conversion of the power supplied of my second Super Milq from 3 channels into 6 channels and I ask myself: is anything in that amp is made in the way that would allow me to close it up and never review it. Sure if I move in...
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Good imagery, Amir. Sure, this can be pretty compelling for big works. Since we aren't ever going to get "everything", I guess we have to prioritize, and/or "settle" at some point, unless one simply wants change for its own sake. Regarding the "bound...
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[quote user="rowuk"]The subject of line filters and uninterruptable power supplies is one that has been pretty free of amateur DIY myths. No one seems to know what makes one sound good or bad and when. The subjects getting attention are IsolationReco...
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Dear Romy,The UPS units are being used in their normal way, as line interactive. The voltage waveform supplied by the Powerware 5115 is a sine wave. This is described briefly in the manual and was important information for me pre-pur...
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Dear Romy, taking ultrasound equipment as an example, there would appear to be much in common in the operation of ultrasound equipment as with a sound system. There is analog signal send/receive, conversion of analog signal received to digital ...
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Romy wrote:"... I can’t open PDF file..."Here's the part of the Manual that covers design features and specs (no circuit diagram available):IntroductionThe CA10 is a 10 watts per channel Class-A stereo power amplifier capable of great musicality and ...
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Hi N-Set, I am three quarters of the way through assembling the first power supply to power-up stage so I have not tested the "singing" as yet. It is something that I have thought a lot about. First and foremost I wanted a steel skin around the pow...
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[quote user="jp"]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.&nbs...
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The system starts as a commercial multi voltage smps unit, 48 volt output from Meanwell.I place this in a box because I have to equip the unit with a multiple pole filter card.The output is fixed, 300 watts and connected to a dc filter board equi...
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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="Romy the Cat"] [/quote]I really do not know what is going on and how to explain the phenomena; I just dump it to you “as is”. Because of multiple reasons I decided to drain the Milq’s power supply when the amp shits down. I have a...
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Dear Romy,Thanks for the information that the sinewave form is only generated when the battery power takes over. The pdf is a good article. I did more research today and located a schematic which backs up what you have said despite t...
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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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[quote user="peter foster"]The UPS units are being used in their normal way, as line interactive. The voltage waveform supplied by the Powerware 5115 is a sine wave. This is described briefly in the manual and was important information fo...
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I usually do not cruse across DIY forums unless someone folks about me. Here it was - at some Russian DIY site they translated my article “6C33C survival guide” that made me to see what they have in there. One article from their site attracted my...
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The preamp has the classic tube regulated power supply using 5R4, 6AS7, 6SJ7. It is transformer coupled output and has no capacitor in the signal chain, the gain is about 8db, so it is not a buffer. For convenience, it does has a remote control. It i...
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