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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="AnonymousUser"]Thanks for your response! I have never tried grounding the cathode in any of my tube projects. Even my amp output stages have been mostly cathode biased. But I am going to try grounded cathodes (and the +/- input stage sup...
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[quote user="Romy the Cat"]To simplify everything: the Melquiades was at attempt to make two stages, capacitor coupled, no feedback SET, having the cathodes sitting on ground and using the unique 6E5P as a driver. My selection of output tube was beca...
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I already have some PY500 (it's a sign =))) ) and I have 836 too.I read about Malquiade amplifier threads.So it seem peoples on this forum like horn speakers (I love them too) and are looking for fast transient response, it's exactly what I like.But ...
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My DSET amplifiers are starting to go together (slowly).Bias string and bleeder relays/resistors...The remainder of the filter caps. The middle floor goes on and the filter cap for the First Stages (6E5P/6E6P).Then the OPT's go in place and the shel...
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I wasn't involved in putting this together so perhaps one or two of those that did will chime in.From the thread..."The source was J River playing through a Lynx AES16 soundcard. Two digital outputs to the Behringer DCX2496s, acting as digital XOs an...
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[quote user="KOTriode"]Romy,I looked at your Melq schematic : http://www.goodsoundclub.com/PDF/Melquiades_SET.pdf regarding the 6E5P bias. Would it be simpler to use two alkaline battery in place of R5 to provide 3V , or 3 Rechargeable for 3.6V ...
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I think I have had enough time with this phono stage now to make a few remarks about it. In keeping with the spirit of this website I am not recommending this component, just reporting on it.
I got my unit off AudioGon after keeping my eyes pe...
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Another interesting thing: why not a lot of people make the single ended hybrids? I understand that single ended output has very low efficiency but still: it is only about the heat dissipation. I have seen some single ended SS amp. There was a strang...
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OK, I have conceptualized what I need for the tweeter amp. It will be MilqEZ – the same Milq one with 6C19P at output. I will use the Super Melquiades power supplies but the HF channels will host own last caps of the filters and own bias of the both ...
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I put the Model 2 today in the system and configured my typical operation mode. I got another pleasant surprise. It looks like the Model One and Two has different DC offset pattern. Both use digital offset and both are not defeatable. Here is where L...
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[quote]This is very bogus notion[/quote]Well I am glad to see you feel that way. You never know - some people cry foul when such happens. "Hey, that was my idea! And now this guy stole it and put into his own product." It happ...
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I admit that I am facinated with this cartridge, based on the undying hope that one day the unique and addictive (and ultimately, necessary...) "aliveness" might be had without the sort of mind-twisting torture that always prevailed. But this "revie...
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Romy,
New member around here great website! I have what is probably a silly question about the above EAR schematic. I've been in the planning stages of scratch building a phono stage and have been looking at a few designs and ju...
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The ideal "star" grounding plan is seldom realized in practice, for lots of reasons. For one thing, it takes serious concentration to really think it through. As I have said many times, it is often useful to have a "bleeder" on the chassis, and this ...
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How do I hate DIY? Let me count the ways...Is there some reason you cannot make through-holes to facilitate soldering leads to your copper sheet? Use a hot iron (800 F) and plenty of aggressive flux to pre-tin the holes... Stand parts on short leads...
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[quote user="N-set"]... I cannot imagine where the fuck I should have a loop??? [/quote] And you are not alone. Any single person who is chasing noise in phonostage ask himself the same question. I assure you that sun of later you will find it and it...
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I kind of less care about Lamm or about his new amps but rather I am interested using the example of ML3 to see what the DHT tubes are capable off. There are some people who worship direct-heated tubes and attribute to them some ventures (like ...
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Play with REL I made other modification the boosted the REL sensitivity to insane level. I modified the way in which my REL delivers antenna’s signal to REL’s front end. Now my REL has BNC ground lifted antenna jack (I tended to use BNC connectors fo...
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So, it has been a while. I have DSET/Macondo in stereo now although there is still some work to do to finish it and tune it to the room. As discussed earlier in this thread I need a preamp with gain and the Placette is just not cutting it for me (n...
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Hello Paul (and everybody else),My name's Alex, and I'm from Alma Music and Audio, the US distributor for Audiopax (and also local San Diego dealer).First, my apologies for the "lousy" website we had. That is now gone, with a new website, but we're s...
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[quote user="Romy the Cat"]I think it takes around 60 seconds on my amps. I have 2 minutes delay for high voltage, so it all within the limit. [/quote]
That is good to know Romy. It was quite frustrating when I tho...
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Vinyl almost died after the launch of CDs, but today the popularity of vinyl playback is on the rise. Music stores are selling more music available on LPs, and many audiogon systems include turntables. So where are the full-function preamps? Before d...
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It is nice to see you around, Jim.
A few comments. C1 in my phonostage is .28uF. The higher values were a proposal of Anagnostopoulos. I understand what he is coming form and yes my output stage of power amps will be able to handle the ULF stress. I...
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Never had a 100kg power supply to play with, but I have certainly noticed that changing the power source affects dynamics (along with plenty of other things, too). I prefer my friend's system's dymanics when "grid power" is connected, vs giant batter...
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The Rohde & Schwarz EU-6201 tuner was made for German Ultrakurzwellen (ultra short waves or FM) Broadcast Network. The idea was to have a chain of wide-bandwidth composite signal receivers that feed re-transmitters. I made an attempt to accommoda...
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Romy, it sure sounds like you were right when you said that at any given point the ML2 was a work in progress.The .033 uF 950s in my amps are indeed 1000V; maybe L got a quantity discount; maybe they're 2nds; who knows at this point why the...
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Jessie, I think you go overly crazzy in here. The buzzing you got is from your inaccuracy of your “small clips”. A Regular divider at input should not have ant noise, regardless the resistors were used. Do not spend a lot and do not go into the craz...
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Hi Cat. I run the 12AX7s just a hair over 1mA each, and the 12AU7s at 6mA. With differential pairs and bleeders, it ends up at 39mA on each +/-300V rail. That works out to 7H minimum inductance at 60Hz, using the standard formula.&n...
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Here's a decent attempt to boil down basic "ground" issues. Generally speaking, according to best practices, grounding one's hi-fi is a systematic attempt to equalize the ground potential throughout the system at "zero". Again, phono stages are harde...
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Rick, sure, working volltage is important. What does your inverter require in the way of current in order to produce it's rated voltage at its rated current? I can remember times when I measured "correct" voltage when the battery was functionally use...
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