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Read the Post in new Window Read the Post in Threaded view  Post #4: Do incremental steps. by Romy the Cat on 2006-03-03 
Browse the content of the threads in new Window  Thread: Grid bias power supplies in Melquiades Amplifier  3 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #25: And the skies clear.... by darkmoebius on 2006-12-06 
Browse the content of the threads in new Window  Thread: “Melquiades” amplifier: a year later. in Melquiades Amplifier  33 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #7: Reading about Malquiades amplifer and the DSET concept: check ! by devo_yan on 2018-05-16 
Browse the content of the threads in new Window  Thread: 250 watts Parallel S.E. advises in Audio Discussions  13 Replies 
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 ...

Read the Post in new Window Read the Post in Threaded view  Post #129: Some more DSET photos.. by anthony on 2017-11-23 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #3: Digital X-overs by guy sergeant on 2013-03-07 
Browse the content of the threads in new Window  Thread: For one day only in Horn-Loaded Speakers  12 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #74: It is about Sound, stupid. by Romy the Cat on 2012-03-17 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
[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 ...

Read the Post in new Window Read the Post in Threaded view  Post #1: The K&K SE hybrid phono stage: a report by Paul S on 2007-05-26 
Browse the content of the threads in new Window  Thread: The K&K SE hybrid phono stage: a report in Analog Playback  55 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #8: A laundromat amplifier? by Romy the Cat on 2006-05-16 
Browse the content of the threads in new Window  Thread: Two-stages, hybrid, small, powerful class “A”? in Audio Discussions  23 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #9: Super Milq Change: the amplifier for Tweeters by Romy the Cat on 2006-09-13 
Browse the content of the threads in new Window  Thread: An amplifier for Tweeters in Audio Discussions  17 Replies 
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 ...

Read the Post in new Window Read the Post in Threaded view  Post #12: Another pleasant surprise by Romy the Cat on 2009-06-06 
Browse the content of the threads in new Window  Thread: Pacific Microsonics Model 2 in Didital Things  85 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #17: Tube thief by hagtech on 2007-11-07 
Browse the content of the threads in new Window  Thread: 7788 tube mic pre design in Analog Playback  38 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #67: Making "Adjustments" by Paul S on 2010-04-18 
Browse the content of the threads in new Window  Thread: Buying a last cartridge. in Analog Playback  80 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #20: Small whited out area on schematic by nos440 on 2008-12-05 
Browse the content of the threads in new Window  Thread: About EAR 834P Modifications in Analog Playback  45 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #153: Route(s) to Ground by Paul S on 2011-11-20 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
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 ...

Read the Post in new Window Read the Post in Threaded view  Post #173: Shakey DIY Basics by Paul S on 2011-11-26 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #179: Seek and you’ll find. by Romy the Cat on 2011-11-29 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #40: Actually am getting bored with this thread. by Romy the Cat on 2007-01-30 
Browse the content of the threads in new Window  Thread: Lamm Industries: a special interview with a special company in Audio News  97 Replies 
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 ...

Read the Post in new Window Read the Post in Threaded view  Post #13: The crazy REL’s new sensitivity. by Romy the Cat on 2008-08-21 
Browse the content of the threads in new Window  Thread: A tube tuner? REL Precedent 646C in Off Air Audio  24 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #35: DHT Preamp update by anthony on 2020-08-03 
Browse the content of the threads in new Window  Thread: Valve Preamplifier for Macondo/DSET in Melquiades Amplifier  74 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #9: Audiopax by alma on 2016-10-03 
Browse the content of the threads in new Window  Thread: T.H.E. Show, Newport, 2015 in Audio News  14 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #137: Damn crossovers by anthony on 2019-01-01 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
[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...

Read the Post in new Window Read the Post in Threaded view  Post #1: Where are the full-function preamps? by skushino on 2006-07-07 
Browse the content of the threads in new Window  Thread: Where are the full-function preamps? in Analog Playback  2 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #12: Are we looking to be right or happy? by Romy the Cat on 2006-02-14 
Browse the content of the threads in new Window  Thread: About EAR 834P Modifications in Analog Playback  45 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #14: Just Dynamics by Paul S on 2022-07-21 
Browse the content of the threads in new Window  Thread: CEC TL0-X: by no means an in-depth review in Didital Things  17 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #1: Rohde & Schwarz EU-6201 Tuner by Romy the Cat on 2008-05-07 
Browse the content of the threads in new Window  Thread: Rohde & Schwarz EU-6201 Tuner in Off Air Audio  34 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #121: When Cooler Heads Prevail by Paul S on 2008-10-03 
Browse the content of the threads in new Window  Thread: Initial thoughts about new/old Lamm ML2s in Audio Discussions  215 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #60: Stick it in the ML2 input stage. by Romy the Cat on 2007-03-24 
Browse the content of the threads in new Window  Thread: Initial thoughts about new/old Lamm ML2s in Audio Discussions  215 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: Input choke for Low Currents? by hagtech on 2006-03-07 
Browse the content of the threads in new Window  Thread: Input choke for Low Currents? in Audio Discussions  5 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #1738: An MIT Wonk Boils It Down by Paul S on 2020-11-15 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
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...

Read the Post in new Window Read the Post in Threaded view  Post #1864: Voltage vs. Current by Paul S on 2022-09-15 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
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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