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Read the Post in new Window Read the Post in Threaded view  Post #59: Melquiades Schematic Version 4.4 ...where is R7 and R8? by Tax on 2011-04-19 
Browse the content of the threads in new Window  Thread: Bias help in Melquiades Amplifier  96 Replies 
Tax wrote: "Sorry to ask, but where is R7 & R8 on version 4.4 of the attached schematic, is it a deliberate puzzle to test the Moron or a numbering error?"The CaT wrote:"It looks like R7 and R8 are not there. They use to be filter resisters for m...

Read the Post in new Window Read the Post in Threaded view  Post #1: In appreciation of Koshka by Tax on 2022-04-11 
Browse the content of the threads in new Window  Thread: In appreciation of Koshka in Melquiades Amplifier  2 Replies 
Finally done! A journey that took a total of 11 years after coming across this forum and seeing the Melquiades posts and schematic. Koshka has a beautiful body and will live on in my SET implementation of a 4 box solution. Here is the left channel po...

Read the Post in new Window Read the Post in Threaded view  Post #3: Soon. by Romy the Cat on 2005-07-16 
Browse the content of the threads in new Window  Thread: Super Melquiades Amplifier. in Melquiades Amplifier  29 Replies 
There is not permission required. You might repeat the original Melquiades if you wish. All that you need is the circuit and ~$1500 per monoblock. Currently I withhold the devaluing the Melquiades schematic as I need to accumulate my own live-supply ...

Read the Post in new Window Read the Post in Threaded view  Post #4: Why didn't I build one? by drdna on 2006-10-06 
Browse the content of the threads in new Window  Thread: “Melquiades” amplifier: a year later. in Melquiades Amplifier  33 Replies 
I will say that I agree with what you have said, Roman; that DIY'ers most likely to build the amp are probably a bit anti-Romy.  Too bad, I always say liten first and then comment.  Too many people in audio get wrapped up in the theory and ...

Read the Post in new Window Read the Post in Threaded view  Post #21: Ac filament.. by son on 2012-04-27 
Browse the content of the threads in new Window  Thread: The short "6C33C Survival Guide". in Melquiades Amplifier  20 Replies 
Yup i think i will use ac for filament,in my mind i wan't to copy and build the structure of melquiades ,so i don't need to recalculate anythink,only follow the stream, but maybe if i use 6,3v filament(i see melquiades use 12,6v) i must change someth...

Read the Post in new Window Read the Post in Threaded view  Post #2: Still planning by drdna on 2007-08-25 
Browse the content of the threads in new Window  Thread: Better chassis design for Melquiades. in Melquiades Amplifier  4 Replies 
Ever since the Melquiades schematic was published, I have been planning to build one, because the objectives and topology seem like they would work for my system.  Unfortunately I am very much not a DIY person.  Even though I have built my ...

Read the Post in new Window Read the Post in Threaded view  Post #2: The value of parts lists. by Romy the Cat on 2011-04-19 
Browse the content of the threads in new Window  Thread: Melquiades (D-Set) parts list in Melquiades Amplifier  4 Replies 
I do not exactly comfortable with oxric’s preoccupation with “parts”. Yes, there are some amps that invest a lot of attention into parts quality – the silver winding in Kondo, oil caps in BAT, of silver foil caps in AN might be the examples. Melquiad...

Read the Post in new Window Read the Post in Threaded view  Post #21: High-Pass Filter Help by skushino on 2013-10-07 
Browse the content of the threads in new Window  Thread: 5 Channel Version of Melquiades in Melquiades Amplifier  21 Replies 
Romy, would you explain / help me better understand how you implemented the HP filter in Melquiades?The schematic shows a series cap after the first tube stage (C3 and C4 in the schematic).  I think these are the first-order HP filters, correct?Quest...

Read the Post in new Window Read the Post in Threaded view  Post #1: 6E6P-DR in triode mode by Johann on 2011-07-13 
Browse the content of the threads in new Window  Thread: 6E6P-DR in triode mode in Melquiades Amplifier  3 Replies 
Hi Romy,i want to use the 6E6P-DR (triode mode) as driver in my tube 45 amp.I use a D3A (triode mode) with Anode choke at 180V, 12mA. Grid 2 is connected via 50 Ohm resistor to anode. Grid 3 (pin 8) is connected to cathode.The 6E6P-DR (also 6E6P-E) a...

Read the Post in new Window Read the Post in Threaded view  Post #3: A cult? Where? by oxric on 2011-04-19 
Browse the content of the threads in new Window  Thread: Melquiades (D-Set) parts list in Melquiades Amplifier  4 Replies 
[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...

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 #76: Convince me. 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"]Ok, I just read your "Melquides Remote biasing". This technic can not be duplicate in my amp due to DC coupling, the C3G (I dont use 6E5P) driver stage basically adjust the 6C33C current in the output stage. Just for curiosity,...

Read the Post in new Window Read the Post in Threaded view  Post #1: Do the Filament Transformers Require a Center Tap? by Iraschwips on 2017-10-05 
Browse the content of the threads in new Window  Thread: Do the Filament Transformers Require a Center Tap? in Melquiades Amplifier  12 Replies 
I'm thinking about trying to put together a Melquiades amplifier for myself. I printed out a copy of the schematic (thanks for sharing). I have a simple early question. Both the 12.6 and 6.3V windings for the filaments are shown as being center taped...

Read the Post in new Window Read the Post in Threaded view  Post #1: What about 220V 50Hz? by Global on 2008-11-12 
Browse the content of the threads in new Window  Thread: What about 220V 50Hz? in Melquiades Amplifier  3 Replies 
Hi I’m planning to build the Melquiades. Owning something that is better then a Lamm is definitely something for me. Having 220V  50Hz. What changes are necessary in schematic? Bigger PSU caps, inductors?...

Read the Post in new Window Read the Post in Threaded view  Post #1: A proper implementation of low-pass filters by Romy the Cat on 2008-02-18 
Browse the content of the threads in new Window  Thread: A proper implementation of low-pass filters in Melquiades Amplifier  4 Replies 
If to look at the Melquiades schematic in the channel “A” you will see 78H first order low pass filter. http://www.goodsoundclub.com/PDF/6-Chennal_Melquiades_DSET_Amplifier.pdf The low-pass filter in Milq and the low-pass filters generally is great...

Read the Post in new Window Read the Post in Threaded view  Post #1: 6C41C – the journey to nowhere. by Romy the Cat on 2005-08-24 
Browse the content of the threads in new Window  Thread: 6C41C – the journey to nowhere. in Melquiades Amplifier  1 Replies 
It turned out that I made my Melquiadenisation with 6C33C. Not practically because it is good or bad tube. The choose of 6C33C was partially accidental: in the beginning I was trying to make an amp that would be able to work in multi-app configuratio...

Read the Post in new Window Read the Post in Threaded view  Post #9: The Melquiades bias: some history. by Romy the Cat on 2005-12-03 
Browse the content of the threads in new Window  Thread: Headphone amplifiers. Baby Melquiades? in Melquiades Amplifier  27 Replies 
[quote user="Chirag"]The 6E5P is an interesting device (I did some research after you dropped the "tetrode" hint and bought a few :-)), but the bias scheme with the OA2's is still incomprehensible to me.  [/quote]Ok, I will try to explain. The...

Read the Post in new Window Read the Post in Threaded view  Post #4: The follow up to the layout… by Romy the Cat on 2007-08-25 
Browse the content of the threads in new Window  Thread: Better chassis design for Melquiades. in Melquiades Amplifier  4 Replies 
[quote user="drdna"] Not that the sound is bad, but my technique must be bad.  Because sometimes during the day the sound will get really particularly bad, even to the point that it sounds like clouds are passing by over the music, if you unders...

Read the Post in new Window Read the Post in Threaded view  Post #4: The 220V's Milq? by Romy the Cat on 2008-11-12 
Browse the content of the threads in new Window  Thread: What about 220V 50Hz? in Melquiades Amplifier  3 Replies 
Hi, Global. Leaving aside the unnecessary to be called notion of Melquiades vs. Lamm I would return to the essence of the thread: what changes are necessary in schematic if it goes for 220V. I do not think that any changes would be necessary. All tr...

Read the Post in new Window Read the Post in Threaded view  Post #1: Crossover Design by drdna on 2005-10-29 
Browse the content of the threads in new Window  Thread: Crossover Design in Audio Discussions  69 Replies 
Hi Roman et al!Allow me to introduce myself.  I have followed with amusement Romy the Cat for many years.  He is ascerbic and ultracritical, but he does know audio.  We share many tastes, like the Koetsu Onyx Platinum foir instance, on...

Read the Post in new Window Read the Post in Threaded view  Post #9: Cognitive Order Of Succession: An approach to system building! by Tax on 2011-04-13 
Browse the content of the threads in new Window  Thread: Cerebral and psychological evolution of amp matching for the... in Horn-Loaded Speakers  15 Replies 
Dear Romy, Thank you for the commentary and the advice with regards to the need to have a COGNITIVE ORDER OF SUCCESSION and to test with another speaker in situ first. Given the varying degrees of how different individuals process COGNITI...

Read the Post in new Window Read the Post in Threaded view  Post #33: Just a boy and his soldering iron... by jessie.dazzle on 2006-12-17 
Browse the content of the threads in new Window  Thread: “Melquiades” amplifier: a year later. in Melquiades Amplifier  33 Replies 
Regarding the "complexity" of these amps : Not being a DIY electronics guy, the Melquiades schematic makes me want to reach for a cigarette... However, naive fool that I am, having no formal training in electronics, I look at it and think to mysel...

Read the Post in new Window Read the Post in Threaded view  Post #57: Two things I really liked... by anthony on 2015-08-13 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
[quote user="Romy the Cat"] anthony wrote:I am not sure how large to make the filter caps for the DHT channel.  At this stage I think I will start at 3000uF and perhaps try altering it a little up or down once the system is stable. Hm, it is depend...

Read the Post in new Window Read the Post in Threaded view  Post #10: New amplification vs. extra channel. by Romy the Cat on 2011-04-14 
Browse the content of the threads in new Window  Thread: Cerebral and psychological evolution of amp matching for the... in Horn-Loaded Speakers  15 Replies 
[quote user="Tax"] Given the varying degrees of how different individuals process COGNITIVE ORDER OF SUCCESSION there will be differences in between how the plumber Vs a brain surgeon  handles COGNITIVE ORDER OF SUCCESSION. I guess on some things...

Read the Post in new Window Read the Post in Threaded view  Post #244: What a brilliant idea! by Romy the Cat on 2017-10-28 
Browse the content of the threads in new Window  Thread: A listening room for a domesticated Cat? in Audio Discussions  283 Replies 
I have so much fun today. I sent the whole kids with their nanny and mom to a Boston children museum along with ants and with grandparents and deeded to stay home to work on my listening room. Since I did not have good sound before I did not parti...

Read the Post in new Window Read the Post in Threaded view  Post #2: 6E6P vs. D3A as driver. by Romy the Cat on 2011-07-14 
Browse the content of the threads in new Window  Thread: 6E6P-DR in triode mode in Melquiades Amplifier  3 Replies 
[quote user="Johann"]Hi Romy,i want to use the 6E6P-DR (triode mode) as driver in my tube 45 amp.I use a D3A (triode mode) with Anode choke at 180V, 12mA. Grid 2 is connected via 50 Ohm resistor to anode. Grid 3 (pin 8) is connected to cathode.Th...

Read the Post in new Window Read the Post in Threaded view  Post #1: About DSET-driven multi-way acoustic system maintenance assessment. by Romy the Cat on 2009-11-01 
Browse the content of the threads in new Window  Thread: About DSET-driven multi-way acoustic system maintenance asse... in Horn-Loaded Speakers  0 Replies 
In this thread I would like to talk a bit about the practice in DSET driven multi-way horns configuration. I have expressed my view that the architectural configuration that Macondo and Super Melquiades end up to be I find is the most interest...

Read the Post in new Window Read the Post in Threaded view  Post #15: Of course I am putting the cart before the horse... by anthony on 2015-06-02 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
[quote user="Romy the Cat"]However, if I did it again then I would not do it in context of multi-channel amplifier but rather I would make a maket amplifier able would test my ideas with it. [/quote]While I do like the idea of experimenting with MF...

Read the Post in new Window Read the Post in Threaded view  Post #7: Second round of questions... by anthony on 2015-05-28 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
Romy, thank-you for your help so far.  Unfortunately I now have some more hopefully simple questions regarding the "pre-final" schematic from your "6 Channel Melquiades" thread (see below).  1.    Do you have a “final version” of the schematic any...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: Crossover Design: WHY? by Romy the Cat on 2005-10-29 
Browse the content of the threads in new Window  Thread: Crossover Design in Audio Discussions  69 Replies 
[quote user="drdna"] I know all the compromises involved with the EdgarHorns, I have heard them when I visited Bruce Edgar in Gardena, and they were pretty good compared to most of what is out there.  I realized that I would likely never be able...
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