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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I think what they did was to put filters, maybe just a simple capacitor on the AC side to try and reduce the noise that the units inject back into the ac mains. Perhaps they were getting complaints that the units worsened the electricity noise in the...
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Hey Bud,Are you saying that the battery materials are less limited in fast dynamic potential energy release than the capacitor materials? I thought batteries had far greater materials limitations compared to capacitors in regards to fast potential re...
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Hi,[quote user="morricab"]You may be right. It would perhaps be worthwhile to look into "better" transformers but I am not sure that an advantage can be found over just going RCA to XLR adaptor into the balanced inputs and thereby bypassing the...
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[quote user="Thorsten"]MY PERSONAL current realisation (where I to build one) would look like this:1) S&B TX-102 as volume control, with suitable switch2) 2V Lithium Battery negative pole to the grid of the Valve, bypassed with good non-magnetic ...
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I think ML amps have an input capacitor put there to isolate from the other components, I have a close friend who has multiamped for a long time with ML 20.6 monos, he had once 6 monos on his system, he now uses only one pair with the input cap red...
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>>Gera, are you catapulted from another planet? Are you sure that you want to drive a mid horn with Rowland amp?
Romy, some people that know me will say "yes", I am not sure... Of course no, not the Rowland to drive my horns, this is the amp ...
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I think I figured it out. Capacitor polarity. I reversed the polarity (leads are black and red) and sound changed. Now it sounds closer to what I am looking for, with better transients. Not as good as the digital crossover in the transient department...
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[quote user="cv"]...yes, I remember. I wonder if it's due to the large (and varying with signal) capacitance of the 6C33 input interacting with the small coupling cap. Hopefully this will be less of an issue with the 6e5p/6p.[/quote]Chris,
It is cer...
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Hi Romy,I am currently in the process of rebuilding my 834 PT. I see you don't use the capacitor bypass on V2, does this have any effect on overall gain of the corrector? I've recently acquired audio Technica ART7 cartridge which is low (0.12 mv) out...
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Hi,I have the phonostage with the similar schematics that Romy has.The power supply use SiC Schottky diodes in bridge and 15H choke load exactly like on the scheme in this thread.Is it possible to bypass each Schottky diode by 10-100 pF capacitor?Doe...
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Romy, what actually happened? Do you know what is wrong?I know that my unit was with Dave 2-3 years - it transpired that its power supply was faulty (a capacitor, I think). In any event, I hope the issue with yours isn't too serious. You probably...
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[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...
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Actually I was wondering what the hell you were talking about what you were bitching that the ML2 socket can not handle 6N6P first. Ether you changed over 10.000 tubes in there or something else was wrong because the ML2 sockets are fine (except the ...
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Hi,[quote user="Romy the Cat"] After some experiments and still being dissatisfied with the HF I ended up consulting with Dima. He spread me a theory according to which the HF was killed by my coupling Silver Mica cap. All my arguments that sil...
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Here is a snippet from an email from Jonathan Carr (Lyra cartridge designer) about objectives and considerations regarding cartridge loading. Most of this is old news, I only re-post it here as a convenient synopsis on this most misunderstood t...
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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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[quote user="be"]Could you tell a bit about how does this:
"I end up with 360V on B+, 15K plate load, grounded cathode, 160V on plate and -3.5V on grid via a series battery."
sound as compared to the normal Milq bias?[/quote]
I did the following. ...
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[quote user="Romy the Cat"]It is obvious that 6SN7-2A3 and 6E6P direct have very different character. The 2A3 it feels like heavy-sunk time of tube and it constantly run a fully submerged. It has seriousness but it does not look at this point that i...
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I was reading the Stefano Bertoncello's post about his new multi-amping again options.
http://twogoodears.blogspot.com/2010/09/multi-amping-again.html
.. and I feel that it would be a good idea to brief summarize multi-amping cros...
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[quote user="Bud"]Sounds to me like your switch mode transformer is doing the buzzing... There is always a turn on buzz, but just for about 10 seconds. The original one had a noisy fan also, to keep it from self igniting, perhaps that is your actual ...
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... it may well work superbly. Where it may not be ideal - well, let me explain. The Miller capacitance is not constant but will have some dependence on level (this effect is much more pronounced in silicon). If we feed the valve from a small capacit...
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We should always remember that VL designs by design, rather than with his ears. While I would guess it's OK to sub 950s for 935s, at the same time I'll bet VL has taken into account ESR and other parameters that the average capacitor-swapper mi...
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As always I tend to play around, experimenting with components in my equipment a little bit. I strongly believe not enough emphasis is placed on topology and the physical layout of the circuit, as sometimes people forget that a circuit is a phy...
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heres a question for the lot of you-due to general lack of many available capacitors in my shop-- i recently mixed both film AND oil caps to pull together a necessary value for a passive crossover. the GOOD of it, is that it takes away some of ...
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mixing those two seems to bring out some of the best of both, so far!the capacitor (or two, as the case may be) is an 8uF combo- 2 4uF caps-- one VQ, one hovland musicap. i HAVE 8uF of vitamin q, but unfortunately, one 4uF is a 400VAC, th...
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I had some experience with bad electricity so i would like to share it here. My audio system does not have ground loop. 1- digital sources (I have CD Player) is more sensitive to Bad Electricity than Pre/Powers. 2- if your audio system Continuously p...
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Vp = 240v, Vg = -90v, Ip = 165 ma, RL=1k5, 10W, H2 = 6.9%, H3=1%, H4=0.2% I used it with cathode bias (used 50w resitor, backed by 10x200uF capacitor). How it sounded - warm and punchy. I had an amp with F-3 about ...
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Roman, the reformation of capacitors is an unswer in many cases. Those, who use BG - have to spend approximatly the same time to bring the system to the proper sound, but your mind is not SO corrupted. You use relatively big tanks o...
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Dear Romy,Assuming that your questions are "honest" ones ( I have no reason to believe they are traps, like it happened to me before with a certain Mr. Thor), I will give you "honest" answers, hoping that our dialogue will be of some interest to the ...
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[quote user="Romy the Cat"]I have seen in it in photographic flashes[/quote]Wow, this is news to me. Makes perfect sense, though. [quote user="he also"]likely due to the memory in formatting[/quote]Yes, electrolytics are funny devices.&nb...
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