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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Ok, you are getting somewhere. I am not sure why I used the 100R, 50R and 22R resistors. It is good idea in some cased to list the potential of some circuits but it need to be used ONLY what it necessary. Do not forget that in your case you have 5 ch...
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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...
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I actually woke up today at 6AM, check all settings on my arms (after a few month of not working), demagnetized the needles and was spinning records all mooring. One of the benefits that I got with new phonostage is that the grounding patters for all...
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Paul, Some good valid points... yes, they've gotten much better over the years, no doubt to technology improvements. A good example is Mallory CGS caps made in the 80's versus new ones. The newer ones are much lighter physically (same p/n), hence th...
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[quote user="Romy the Cat"] anthony wrote: Then
the AC-DC conversion on the first floor, filter caps and output transformers on
the third level with the amplifiers sitting proud on top. I don't want to
see any caps or transformers...just valves.P...
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[quote user="decoud"]Romy, I imagine it is irrelevant but have you found a difference between lower and higher voltage versions of the Electocube 950 series in the coupling capacitor position in the full range Melq? I ask because a stock of 1000V has...
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Old Parts Club people climb over each other's backs for orange and lemon drops, old washing machine motor run, Russian Guided Missle controllers, etc., but good moderns caps certainly have better specs. In any case, evaluations of any new caps should...
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Romy, I understand that at some stage you trialled a number of different capacitors and settled upon Electrocube 950B/D not necessarily for the Melquiades but perhaps for some other project. I was wondering if you ever experimented with different co...
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[quote user="Paul S"] Does anyone know the voltage the big couping caps actually see? Yes, I should measure it, but I would rather avoid the drill of opening the amps, propping them up somehow and measuring if someone already knows the answer. Of co...
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OK, this turns out not to be a no-brainer. These caps are definitely quieter than anything I've used to date. At times, there is a sense that "something is missing", but then the "missing" frequency pops up loud and clear, apropos the music (as oppo...
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I’m sorry, I’m not getting you. Where did you use those caps and what values/voltage do you use? I never use any Cardas caps. Their cables are notorious crap, why do you feel that this caps should be better?...
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… but there is no one to ask how mater it is…
[quote user="hagtech"] Seems to me a small film cap added to a large electrolytic solves most of the sonic issues people complain about re the large caps.[/quote]
Hm, I do not know. I think if good caps...
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[quote user="Romy the Cat"] … The sound still a bit harder then I would like it to have… I do not find any sensible explanations.[/quote] I was breaking my head trying to figure out why the large caps shunted battery in PP2000 suddenly gave me chang...
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A few post above Bill mentioned that he run his PP2000 from AdeptResponse power conditioner. I am not familiar if AdeptResponse helps to separate one PP2000 effect another. I am not also familiar with AdeptResponse itself. Looking it up it appears t...
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Today I replaced the problematic pair of Chinese 7 pin sockets on one of my ML2s. It looked like they were replaced at least once before, and that my job is at least the second set of replacement sockets, so three total counting the OEM pair. There...
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[quote user="Romy the Cat"]Did you try just for test to increase the caps value that short the plate to ground? Will it amount and the character of the noise change? [/quote]Just like one would expect: 0.1uF shorting cap gives approx 4x more ham than...
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[quote user="N-set"] I'll scope the PSU soon to check the opreation. Caps, ok, I cantry that. Adjusting the caps--this battle is stillin front of me. Actually my plan was to adjust them in the circuit, rather than desolder-adjust-resolder.[/quote] A...
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Paul, in my view the air-caps as an ultimate cap, the ultimate by own intrinsic topology. It is particularly the case for the 834P- like application as in there the cap is not biased by high voltage DC and gets constantly re-polarized. You see the pr...
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All records, particularly from good period, were recorded at different equalization. Even the records that were RIAA marked were in fact WAY off…How to deal with it? Running a feedback to high impedance, in the way how it made in EAR 384P, permited u...
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[quote user="anthony"]Thanks for your
insight Romy. I can see your point about not needing to worry too much in
the DSET about coupling cap performance at higher frequencies but I would
imagine that the crossover filter caps are quite import at t...
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[quote
user="anthony"]Romy, I understand that at some stage you trialled a
number of different capacitors and settled upon Electrocube 950B/D not
necessarily for the Melquiades but perhaps for some other project. I was
wondering if you ever expe...
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[quote user="Romy the Cat"]I do like the assembly. I o not fine it messy at all BTW. I would like to have inputs slightly closer to the grid of the first tube..[/quote]I'd prefer to have the ground terminals much closer to the ground plane and more o...
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[quote user="N-set"]Oh, Romy, I meant the air caps in the corrector loop of course!!!Adjusting PS caps I leave to AA morons and alike.Believe me or not I did go very serious about the proper choke input operation.What I meant is that I have to ge...
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well, to add my bit of mustard to this here oldie thread.I HAVE mixed film and oils successfully in e.g. a tweeter x-over of a Burmester 961. The tweeter is an AMT (air-motion-transformer) and very revealing.The original C's are two sets of...
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Thanx Romy,
Yes, fitting "time produced" into the matrix is an important piece of the puzzle, don't think I mentioned that one.
Holco resistors are a great example, are in my notes, along with other resistors, and caps, that have changed.&n...
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It seems like lots of folks use parts to try to tune/voice their systems, and the V-Caps are just another option, IMO. No matter what people think of new parts as they break them in, they will eventually tire of the overall sound from...
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As there was talk on the BW Broadcast RBRX1 receiver here, I thought this might be of interest:I have bought a new DSP-based tuner, and it is unlike any other I have used before. I had sort of distantly lusted after the BW Broadcast RBRX1, but ne...
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I must say that I have always thought the Cardas "Golden Ratio" schtick was pretty lame. So it was with no small measure of trepidation that I sent off a rather outlandish sum of money for two Cardas Golden Whatever 4.7 uF caps for th...
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Romy, I have to admit that there are as many differences in film caps as there are in electrolytic caps. You can find varying opinions for and against both based on brand, type and usage. As noted, large value film caps get (physically) large so you...
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[quote user="Paul S"]I have also been thinking of subbing electrolytics for the huge - up to 100 uF - caps in my speaker level crossovers, just to hear it for myself. Although everyone says to use polys in the signal path, etc., I just wonder a...
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