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Read the Post in new Window Read the Post in Threaded view  Post #12: Transformer are not an issue at all. by Romy the Cat on 2011-03-21 
Browse the content of the threads in new Window  Thread: How to get a LOT of SET power. in Audio Discussions  106 Replies 
[quote user="IslandPink"]…. transformers being the big issue there as I see it ….[/quote]IslandPink, We are so accustom to sink inside the box of full range SET amplifiers that we afraid of everything. This is the whole beauty of  DSET concept – the ...

Read the Post in new Window Read the Post in Threaded view  Post #15: Might be I do not get something, educate me. by Romy the Cat on 2007-03-14 
Browse the content of the threads in new Window  Thread: Another light for the LS tunnel: transformer-attenuators? in Audio Discussions  26 Replies 
[quote user="George"]I have always been meaning to ask you why a step-up transformer for a cartridge can be acceptable but a transformer elsewhere is considered detrimental. [/quote] I do not say that step-up transformer is good but the transformers ...

Read the Post in new Window Read the Post in Threaded view  Post #212: The intestage loading talk. by Romy the Cat on 2009-04-05 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
[quote user="Romy the Cat"]In my upcoming DH Milq MF DSET I will have an Innerstage transformer and output transformer. The loading of output tube has known effect to harmonics vs. transients, it is know, it is predicable and it is manageable. The In...

Read the Post in new Window Read the Post in Threaded view  Post #1: Output transformer for bass-channel of Super Melquiades. by Romy the Cat on 2007-08-17 
Browse the content of the threads in new Window  Thread: Output transformer for bass-channel of Super Melquiades. in Melquiades Amplifier  2 Replies 
Further looking at where I would like to take the new 6-chennal version of the Super Milq I am contemplating a new revision of my bass channel output transformer. Currently I have Jack Elliano’s made 450mA, large, single section LF transformer that b...

Read the Post in new Window Read the Post in Threaded view  Post #57: The first MF transformer for single-stage Milq. by Romy the Cat on 2007-08-08 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
I got today my first pair of output transformers for the single-stage Melquiades.  They are 40ma, 5H, 42R primary, 15:1, Amorphous, with remapable secondaries made by Netherlandian Pieter Treurniet. I did not put it in use and heard them – proba...

Read the Post in new Window Read the Post in Threaded view  Post #1051: Daisy chaining balanced transformer -> PP2000 by manisandher on 2012-07-13 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
[quote user="Romy the Cat"]From what you describe I conclude that you have ground loops regardless of the PPs and the PP juts highlights the problem.[/quote]This may well be the case. I can't even remember the exact components I was using last year (...

Read the Post in new Window Read the Post in Threaded view  Post #68: Giant Transformer by Paul S on 2012-03-14 
Browse the content of the threads in new Window  Thread: A different breed of 6C33C amplifier. in Melquiades Amplifier  84 Replies 
KOT, as you may know, the ML2 has a BIG transformer to make "36 Watts" at clipping; but even with this and the trick feedback it is not the first choice for large dynamic/OB drivers.  Of course I mention this because of your remarks about the 6C33C, ...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: An ultimate transformer within a narrow bandwidth? by cv on 2005-02-04 
Browse the content of the threads in new Window  Thread: An ultimate transformer for narrow bandwidth? in Melquiades Amplifier  14 Replies 
Allo Romy,Big topic this! I will write something suitably detailed when I get a chance this weekend, but you're right - the transformer is key and one that is optimised for the task in hand is absolutely the way to go and something that not many peop...

Read the Post in new Window Read the Post in Threaded view  Post #9: Re: An ultimate transformer within a narrow bandwidth? by cv on 2005-02-16 
Browse the content of the threads in new Window  Thread: An ultimate transformer for narrow bandwidth? in Melquiades Amplifier  14 Replies 
AlloT wrote: "Absolutely. Making a transformer for < 100Hz would mean to use a huge core and a fairly large airgap to get more inductance at a given standing current. This makes winding the transformer with low parasitic capacitance and low leakag...

Read the Post in new Window Read the Post in Threaded view  Post #801: Tell more about your 15KVA isolation transformer. by Romy the Cat on 2011-03-25 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
Mani, that is interesting. Instead of simply fixing the PP2000 you decided to try isolation transformer way. That is fine. Can you provide more details how you made your 15KVA isolation transformer? I have 3KVA and 5KVA they big, they have, the have ...

Read the Post in new Window Read the Post in Threaded view  Post #807: 15KVA transformer by manisandher on 2011-03-26 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
[quote user="Romy the Cat"]Instead of simply fixing the PP2000 you decided to try isolation transformer way.[/quote] With all due respect Romy, you of all people know that applying the term "simply fixing" to the PP2000 is ridiculous. I don't have th...

Read the Post in new Window Read the Post in Threaded view  Post #4: The vintage tubes paranoia and a custom bass transformer by Romy the Cat on 2008-01-11 
Browse the content of the threads in new Window  Thread: My (Amplification + Acoustic System): what is next? in Audio Discussions  41 Replies 
[quote user="Paul S"] I have been surprised that you have not already pursued the Zarathustra for your multi-driver, sealed LF.  From your early descriptions of both, this seemed like a natural pairing and the most likely way to go, to keep the ...

Read the Post in new Window Read the Post in Threaded view  Post #1: PCM63 DAC with Transformer IU output stage by Arno P on 2012-05-16 
Browse the content of the threads in new Window  Thread: PCM63 DAC with Transformer IU output stage in Didital Things  0 Replies 
Does anyone have building and/or listening experience in "transformered" IU output DAC's (with/without tube behind it)?...

Read the Post in new Window Read the Post in Threaded view  Post #81: Right grounding configuration for PS, corrector and transformer assemb... by Romy the Cat on 2010-04-19 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
Alex, From what you report it looks like it might be the filaments. The 32mV is a bit high for filament ripple, I usually prefer it to be 5mV but 32mV shell not have hum.  Do not bring the filaments directly as you did but make it running by tool loo...

Read the Post in new Window Read the Post in Threaded view  Post #154: Maybe talk to RAAL about changing the transformer by anthony on 2015-11-08 
Browse the content of the threads in new Window  Thread: Another time aligned 5-way horn project in Horn-Loaded Speakers  189 Replies 
There should be an 111dB tap on the Lazy Ribbon, but perhaps you have tried that already.  Other than that, perhaps talk to RAAL to see if they can improve the sensitivity a little more with a transformer change (or something else)...it might be quic...

Read the Post in new Window Read the Post in Threaded view  Post #809: Cheater plugs vs. isolation transformer by manisandher on 2011-03-26 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
[quote user="Romy the Cat"]I will go today to a store and will buy 25 cheating plugs, completely isolating  my playback ground from PP2000 ground an use my own ground.[/quote]Well this is what I was struggling with. Will cheater plugs truly isolate y...

Read the Post in new Window Read the Post in Threaded view  Post #52: Only one transformer per amp. by Romy the Cat on 2011-04-17 
Browse the content of the threads in new Window  Thread: How to get a LOT of SET power. in Audio Discussions  106 Replies 
It is unfortunate that this thread will not lead to anything practical or tangible to me personally, so any talk from me are very much worthless. Still from the purely conceptual perspective I would like to explain why I would prefer non-transformer ...

Read the Post in new Window Read the Post in Threaded view  Post #874: Are you sure that it was a transformer? by Romy the Cat on 2011-06-05 
Browse the content of the threads in new Window  Thread: It’s mad, mad, mad... electricity. in Audio Discussions  1910 Replies 
I never seen any insulation transformer to do the effect that you depicted. No transformer will correct the waveform unless it is a resonating transformer (Ferro, parametric or any other type). In any case it has have a cap to crate own resonance. Ab...

Read the Post in new Window Read the Post in Threaded view  Post #68: Juts put is one extra transformer for now. by Romy the Cat on 2013-05-23 
Browse the content of the threads in new Window  Thread: Bias help in Melquiades Amplifier  96 Replies 
DA, from what you say I do not think you need actions to do now.  As I understand the power transformer for the amps most likely has been made. Since you are in design phase and the look forward to have a sever voltage then get 1-2A 12V transformer w...

Read the Post in new Window Read the Post in Threaded view  Post #34: Transformer hunt continued by jessie.dazzle on 2007-05-01 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
Romy, I have contacted Automatic Electric (AE Europe in the Netherlands) requesting a quote for transformers meeting your specs. The AE site says they can do custom amorphous core transformers to spec. Currently waiting for a reply. I will post th...

Read the Post in new Window Read the Post in Threaded view  Post #36: Some thoughts about transformer for my MF channel. by Romy the Cat on 2007-05-01 
Browse the content of the threads in new Window  Thread: The one-stage Melquiades. in Melquiades Amplifier  74 Replies 
First of all thanks to all who assist me with this project, including those who did not post here. Jim, Electraprinted Jack is great guy but he does not believe in exotic cores, very unfortunate because I like to deal with him. Jessie, you are righ...

Read the Post in new Window Read the Post in Threaded view  Post #29: The transformer-less Masonic secretive handshake... by Romy the Cat on 2007-09-26 
Browse the content of the threads in new Window  Thread: Devid Berning amplifiers: the anti-trnsformers frenzy? in Audio Discussions  45 Replies 
Meriln, this is one of the subjects that disturbs me in your description: your bring OTL consciousness to justify Berning and you bring all those foolish OTL people as witnesses to give credentials to Berning. We all know Doctor Gizmo and all know hi...

Read the Post in new Window Read the Post in Threaded view  Post #23: Do not hate me, the transformer. by Romy the Cat on 2007-09-25 
Browse the content of the threads in new Window  Thread: Devid Berning amplifiers: the anti-trnsformers frenzy? in Audio Discussions  45 Replies 
[quote user="Merlin"]Secondly could you explain which characteristics of the recording are destroyed, and what mechanism David Berning uses to acheive this? [/quote] Actually it would be a reversed question to David Berning: “What kind evaluation ...

Read the Post in new Window Read the Post in Threaded view  Post #8: Re: An ultimate transformer within a narrow bandwidth? by Thorsten on 2005-02-16 
Browse the content of the threads in new Window  Thread: An ultimate transformer for narrow bandwidth? in Melquiades Amplifier  14 Replies 
Hi,[quote user="Romy the Cat"] I lately have some reasons to think about optimum requirements for SET’s out transformer if the amp handles juts a narrows bandwidth. For instance let pretend that we have 2 monoblock and each of them drive: LF <10...

Read the Post in new Window Read the Post in Threaded view  Post #11: Re: An ultimate transformer within a narrow bandwidth? by cv on 2005-02-16 
Browse the content of the threads in new Window  Thread: An ultimate transformer for narrow bandwidth? in Melquiades Amplifier  14 Replies 
Allo TAh, I think we are agreed on all counts. The suggestion of low bass via the deliberate introduction of its harmonics is something that has been done with guitar amps since way back, even if it wasn't the original intention...cheerscv...

Read the Post in new Window Read the Post in Threaded view  Post #13: Re: An ultimate bass transformer? by cv on 2005-02-25 
Browse the content of the threads in new Window  Thread: An ultimate transformer for narrow bandwidth? in Melquiades Amplifier  14 Replies 
This will be very interesting indeed... that is an enormous airgap and will make for a very linear and unstressed hunk of iron. You may wish to apply similar tactics to the power supply (low DCR inductors) if you want to be really surprised...Which r...

Read the Post in new Window Read the Post in Threaded view  Post #6: Some transformer ranting. by Romy the Cat on 2005-10-27 
Browse the content of the threads in new Window  Thread: Passive transformer based preamp in Audio Discussions  41 Replies 
[quote user="Thorsten"]I wonder, which specific line level interstage transformers have you tried, it would have to be ALL of them in order for your statement "there are non" to hold.......But, what specifically do you object to in these transformers...

Read the Post in new Window Read the Post in Threaded view  Post #5: Re: Passive transformer based preamp by Thorsten on 2005-10-26 
Browse the content of the threads in new Window  Thread: Passive transformer based preamp in Audio Discussions  41 Replies 
Hi, [quote user="dazzdax"]Hi Romy and other fellow audiophiles, what is your experience with passive transformer based preamps?[/quote]I have yet to find anything better. If using active try using a TVC as volume control, it takes the active preamp ...

Read the Post in new Window Read the Post in Threaded view  Post #12: transformer coupling by guy sergeant on 2007-08-03 
Browse the content of the threads in new Window  Thread: The Sakuma's Show in Audio Discussions  35 Replies 
I've read about what Sakuma does (as have many people)  I've never listened to, or tried to build any of the amplifiers he publishes schematics for. However, I have made several amplifiers which use interstage transformer coupling and, provided ...

Read the Post in new Window Read the Post in Threaded view  Post #12: Please check for shorts and mistakes before investing in another trans... by JJ Triode on 2022-01-02 
Browse the content of the threads in new Window  Thread: R22 in Melquiades Amplifier  34 Replies 
Domidaw, you wrote: The photo shows the capacitor c10. Its minus is connected to ground, its plus goes to the output transformer,According to the schematic it is the grounded (minus) end of C10 that should connect to one side of the output transforme...
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