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Read the Post in new Window Read the Post in Threaded view  Post #17: Tantalium caps by be on 2008-07-09 
Browse the content of the threads in new Window  Thread: Rohde & Schwarz EU-6201 Tuner in Off Air Audio  34 Replies 
Very interesting "review" thanks.The 150D is possibly not the most relevant comparison, it does not seem to be a high quality product since its ESR values are not even mentionned in the data sheets.Tha T97 series: ( http://www.vishay.com/docs/40092/t...

Read the Post in new Window Read the Post in Threaded view  Post #37: Re: Better among worst? by Thorsten on 2005-11-07 
Browse the content of the threads in new Window  Thread: Passive transformer based preamp in Audio Discussions  41 Replies 
Hi,[quote user="morricab"]As to the best transformers souding more transparent than the best resistors, I'll believe it when I (don't?) hear it.  You claim to have heard this but I most certainly haven't. [/quote] Well, the claim is no...

Read the Post in new Window Read the Post in Threaded view  Post #64: RN60 vs S102... leave it alone. by Romy the Cat on 2007-03-25 
Browse the content of the threads in new Window  Thread: Initial thoughts about new/old Lamm ML2s in Audio Discussions  215 Replies 
[quote user="jessie.dazzle"]Romy, you may be right in suggesting that I am "going a little crazy in there" (I consider this a compliment btw)... so for now I decided to try some locally sourced precision metal film resistors (Vishays are not that eas...

Read the Post in new Window Read the Post in Threaded view  Post #18: Perhaps the Tantalum Subject would need own thread. by Romy the Cat on 2008-07-09 
Browse the content of the threads in new Window  Thread: Rohde & Schwarz EU-6201 Tuner in Off Air Audio  34 Replies 
[quote user="be"]Very interesting "review" thanks.The 150D is possibly not the most relevant comparison, it does not seem to be a high quality product since its ESR values are not even mentionned in the data sheets.Tha T97 series: ( http://www.vishay...

Read the Post in new Window Read the Post in Threaded view  Post #1: Milq: Starting the project by Antonio J. on 2005-11-03 
Browse the content of the threads in new Window  Thread: Milq: Starting the project in Melquiades Amplifier  23 Replies 
I'm in touch with a reliable technician who is going to build the Melquiades monoblocks for me. He has suggested some changes which I'd like to comment, he's having trouble to find some of the parts. I hope you can help with this:- Regarding C2 the 2...

Read the Post in new Window Read the Post in Threaded view  Post #16: RE: What's the deal with Tantalum Caps? by Romy the Cat on 2008-07-08 
Browse the content of the threads in new Window  Thread: Rohde & Schwarz EU-6201 Tuner in Off Air Audio  34 Replies 
[quote user="Romy the Cat"] I do some very interesting experiments with Rohde & Schwarz tuner. Dima and I have discovered a way to use the Schwarz without the wide bandwidth amplifier, driving the Multiplex Decoder from the Schwarz’s preamps. Bas...

Read the Post in new Window Read the Post in Threaded view  Post #34: Hybridizing by Paul S on 2008-06-01 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
The SS out does calm/quiet/clear things considerably, but there is a price for that clarity, as I have reported.You probably already looked into JFET?Do I "remember" that you had a stash of exotic adjustable air-core caps?  As you can tell ...

Read the Post in new Window Read the Post in Threaded view  Post #357: The era of enlightenment. by Romy the Cat on 2009-06-26 
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"]The events of the last 3 days are incredibly stupid, incredibly interesting and very educational. During the last few days I have discovered some very interesting phenomena, ok might be no a phenomena but a behavior, th...

Read the Post in new Window Read the Post in Threaded view  Post #216: Parts Location by Paul S on 2012-07-16 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
N-set, at the socket is usually the best place for tube-specific parts, and straight undernerath the socket is often the quietest at-the-tube location.  Sorry if your socket connections are hard to get to.  Again, I think someone makes a nice "socket...

Read the Post in new Window Read the Post in Threaded view  Post #5: Bias or do not Bias – what a qeston!!! by Romy the Cat on 2007-08-28 
Browse the content of the threads in new Window  Thread: 6 Channel Version of Super Melquiades in Melquiades Amplifier  131 Replies 
Contemplating now how to organize biasing for 3 singe stages of my 6-chanls amp I was faced the dilemma: do I need to bias my tubes. The 6E5P/6E6P are Russian tubes and it means that are very different right from the boxes. The Milq, driver tubes, be...

Read the Post in new Window Read the Post in Threaded view  Post #12: What's the deal with Tantalum Caps? by Romy the Cat on 2008-07-04 
Browse the content of the threads in new Window  Thread: Rohde & Schwarz EU-6201 Tuner in Off Air Audio  34 Replies 
I do some very interesting experiments with Rohde & Schwarz tuner. Dima and I have discovered a way to use the Schwarz without the wide bandwidth amplifier, driving the Multiplex Decoder from the Schwarz’s preamps. Basically we put two stages wit...

Read the Post in new Window Read the Post in Threaded view  Post #8: One Mighty Big Resistor by Paul S on 2018-11-03 
Browse the content of the threads in new Window  Thread: The GoodSoundClub’s ‘Ultimate Audio Dildo Award’ in Audio News  10 Replies 
OK, I read the blurb.  Now that the cat's out of the bag, and we know it's just a resistor ladder, why not use... a resistor ladder?  Gotta hand it to those "MIT" guys, also I think there's room yet for upgrades.  How about a deluxe, super-limited, l...

Read the Post in new Window Read the Post in Threaded view  Post #16: Of the several things I do not understand by Paul S on 2007-09-03 
Browse the content of the threads in new Window  Thread: 6 Channel Version of Super Melquiades in Melquiades Amplifier  131 Replies 
Pretty clean, Romy (and one hellova tranny at Fundamentals)!Of course, I have questions:I thought you said Vishay metal foils in your earlier response about bias adjustment?If so does that mean steps, or...  how, exactly?When you specify "Full" ...

Read the Post in new Window Read the Post in Threaded view  Post #21: None of my business, but by Paul S on 2008-02-13 
Browse the content of the threads in new Window  Thread: The Shelter 90X: mystery or mastery in Analog Playback  54 Replies 
Alex, I am guessing that with the listed "compliance" of the 901 you could use an I-beam as your tonearm.  You could probably start by taping a small adhesive-type tire weight, ~10g, to the SME headshell and maybe add corresponding weight t...

Read the Post in new Window Read the Post in Threaded view  Post #9: Single ended First Watt F5 by cv on 2009-12-10 
Browse the content of the threads in new Window  Thread: SS Amplification for Compressions drivers? Sound? in Horn-Loaded Speakers  19 Replies 
Hi Romy,On my to-do list is a single ended version of the F5... essentially just the upper or lower half of the schematic, with a load resistor to opposite power rail (or perhaps a low DCR SE transformer) replacing the complementary portion.Alas it's...

Read the Post in new Window Read the Post in Threaded view  Post #3: Numbers versus listening by Paul S on 2007-03-12 
Browse the content of the threads in new Window  Thread: Another light for the LS tunnel: transformer-attenuators? in Audio Discussions  26 Replies 
I also got tired of reading all the DIY posts on the S&B 102.  And yes, I have done the numbers, and it would be possible to adversly affect bass with high impedance feeds and/or long, bad cables feeding this unit, coupled to ...

Read the Post in new Window Read the Post in Threaded view  Post #294: What Works Where by Paul S on 2020-03-17 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
The "funny" thing is, the part that "sounds the best" in one situation might not do as well in another situation. A great example I can remember is the fabled Vishay S102 resistor at the grid. Great for stepped attenuators; not good at all at the gri...

Read the Post in new Window Read the Post in Threaded view  Post #217: Lush layout by N-set on 2012-07-17 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
[quote user="Paul S"]N-set, at the socket is usually the best place for tube-specific parts, and straight undernerath the socket is often the quietest at-the-tube location.  [/quote]Yes, this is my exp. too, although loading R has two roles here: 1) ...

Read the Post in new Window Read the Post in Threaded view  Post #214: The Usual by Paul S on 2012-07-16 
Browse the content of the threads in new Window  Thread: The last phonocorrector: “End of Life" Phonostage in Analog Playback  310 Replies 
N-set, the usual way of dialing in RIAA is the anti-RIAA curve, trying for null.  This might be from any source with appropriate output voltage/impedance fed to the corrector input.  The obvious problem with the LP is that it depends on the arm and c...

Read the Post in new Window Read the Post in Threaded view  Post #4: invisible preamps by morricab on 2006-12-05 
Browse the content of the threads in new Window  Thread: The ultimate buffer #2...? in Audio Discussions  3 Replies 
Hi Romy,I too have for quite some time been on a quest for a truly transparent preamp.  To this end I have tried some that were indeed very good such as the Silvaweld SWC 1000 that I now own and especially the Vacuumstate RTP-3d from Allen ...

Read the Post in new Window Read the Post in Threaded view  Post #3: Resistors, resistors where are you….? by Romy the Cat on 2007-02-23 
Browse the content of the threads in new Window  Thread: Who makes good L-Pads? in Audio Discussions  4 Replies 
Thanks, Adrian, as I underused the Dave Slagle is autoformer guy. I have no needs for autoformers as I need purely restive load. I fact it is not big deal to find switch,  it is complicated to find a ready to go attenuator. Mike Percy care many ...

Read the Post in new Window Read the Post in Threaded view  Post #5: Making sense of no sense by Paul S on 2007-03-13 
Browse the content of the threads in new Window  Thread: Another light for the LS tunnel: transformer-attenuators? in Audio Discussions  26 Replies 
Like I said, musical bass via the TAP does not thin out at all before my BR bins roll it off; but that's as much as I can say at this point.  And (against conventional logic) the TAP certainly does much better bass than any active LS I...

Read the Post in new Window Read the Post in Threaded view  Post #17: The several things I do not understand too by Romy the Cat on 2007-09-03 
Browse the content of the threads in new Window  Thread: 6 Channel Version of Super Melquiades in Melquiades Amplifier  131 Replies 
[quote user="Paul S"] Pretty clean, Romy (and one hellova tranny at Fundamentals)! [/quote] 50mA, 60H, LL1623 Amorphous [quote user="Paul S"] I thought you said Vishay metal foils in your earlier response about bias adjustment? If so does that me...

Read the Post in new Window Read the Post in Threaded view  Post #2: Re: Starting the project by Romy the Cat on 2005-11-03 
Browse the content of the threads in new Window  Thread: Milq: Starting the project in Melquiades Amplifier  23 Replies 
[quote user="Antonio J."] - Regarding C2 the 2000uF/450v cap, he suggests to replace it with 5 x 200uF/200V by Mundorf (he can get them for a good price, probably better those five caps than a single 2000/450). I'm not sure about this replacement, it...

Read the Post in new Window Read the Post in Threaded view  Post #56: Old problem now forgoten by Jorge on 2012-01-05 
Browse the content of the threads in new Window  Thread: Crossover Design in Audio Discussions  69 Replies 
A long time ago, when EAD dsp 9000 pro came out,  Wadia had a DAC with volume control I dont remeber the number right now but -i think it was the 2000 anyway, the big deal about the EAD 9000 was that the integrated volume control was only 6db in the ...

Read the Post in new Window Read the Post in Threaded view  Post #94: 12.1k Resistor by anthony on 2017-03-04 
Browse the content of the threads in new Window  Thread: Planning my DSET in Melquiades Amplifier  186 Replies 
Hi Romy,Minor question with hopefully a simple answer.In the DSET schematic you have a 12.1k resistor in the bias for channels B, C, D and F.  I have some nice 12k resistors here (not 12.1k) that I could use in those positions...can you see a problem...

Read the Post in new Window Read the Post in Threaded view  Post #16: The Cosecant correction. by Romy the Cat on 2008-09-29 
Browse the content of the threads in new Window  Thread: High Quality Music Server / CD player in Didital Things  169 Replies 
[quote user="Romy the Cat"] A few things that juts comes to might mind regarding the Cosecant. Gordon says that it is a Passive Multibit DAC with a single Shinko Tantulum resistor “because only a resistor can be a linear device over the entire audio ...

Read the Post in new Window Read the Post in Threaded view  Post #31: Secondary vs.primary by Romy the Cat on 2009-07-24 
Browse the content of the threads in new Window  Thread: The Expressive Technologies SU-1 in Analog Playback  33 Replies 
[quote user="Axel"]OK, this is useful also, in that you have not noted a "pattern" as you say. My point is closer to your suggestion, that I do change cart --- and sometimes buy new ones,  B U T I do not buy other SUT (at least I try to avoid it). I'...

Read the Post in new Window Read the Post in Threaded view  Post #7: Melquiades For Dummies™ - planning and ordering parts step. by Romy the Cat on 2007-10-02 
Browse the content of the threads in new Window  Thread: Melquiades For Dummies™ - step by step. in Melquiades Amplifier  28 Replies 
Here is the general specification for the parts that I used. The selection of the parts implies some liberty of course. It will be your amp after all, not mine - do whatever you wish. In some case when I feel that requirement is critical I will stres...

Read the Post in new Window Read the Post in Threaded view  Post #1: A resistor between screen and grid by Romy The Cat on 2005-10-20 
Browse the content of the threads in new Window  Thread: A resistor between screen and grid in Melquiades Amplifier  9 Replies 
I received a comment form people who reportedly well-familiar with using the high-frequency high gain tubes. They suggested me that the resistor between screen and grid (R23) might be eliminated and that would bring some benefits. It very much might ...
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