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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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On any USA electrical wiring system, ALL circuits are referenced to and mechanically connected directly to a common ground at all times via the "neutral" wire, which ultimately connects to the grounded bus in the service box. And all UL electronics a...
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Paul, thanks! I'm quite happy to hear I'm not the only one fighting vibrations in a seemingly dead structures...It takes a lot of thinking to properly isolate and damp vibrations.Not unlike in the complementary problem: reproduction of the audio rang...
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Romy, I have a very large collection of 45 triodes.... many brands and varying internal construction. From my humble viewpoint, here's some personal findings on the various types:- Globe 45 tubes... these are the earliest, mostly from RCA. There are...
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Robert, Yes, of cause I understand it. The problem is that when I laid down the pipes under the midbass horns there was no larger diameter available then 6” pipes, there was no more clearance under the mouth. So, my listening room has two 6” pipes an...
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The basically the same tubes. The 6E5P has own unit pins layout with heaters connected across the tube – very moronic in my view and it does not allow twisting the AC filament wires to the very end. The 6E6P has a common pins layout that most of west...
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I am not sure what rectifier the 2A3 SET uses. Mine uses the GZ37. The best regarded is usually the Mullard NOS. I have used that for years.
Recently I was on the kick of listening to the vibration of tubes and I came across a dirt cheap tube fr...
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Hi N-Set, I am three quarters of the way through assembling the first power supply to power-up stage so I have not tested the "singing" as yet. It is something that I have thought a lot about. First and foremost I wanted a steel skin around the pow...
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[quote user="Paul S"]Anthony, it sounds like you have given a lot of thought to damping structural vibration. I was referring to the electro-magnetic fields thrown by transformers, and - based on my view of your perspective drawings - I was wonderi...
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For me the "delta" with the newer Hal-O dampers was in the direction of increased clarity. One example is in vocals, where consonant sounds like "f" and "th" were much more realistic (my "s" and "sh" were already pretty good.) Beyond these typically...
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Paul, I hear you clearly re wall mount. Well...I have chosen the hard way an occasion to have one, +/- universal solution I could "copy&paste"if I change location. Go through that hell and have it done once and forever. I even ask my daughter to...
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[quote user="drdna"]The question in my mind Romy is: why? I will be interested to hear your comment on what your goal was to learn about your system in introducing these and what the results are. After the extent to which you have describ...
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[quote user="Romy the Cat"]
Tube traps are mistakably designed as they tend to deal with a very erroneous assertion that it is possible to feel a listening room with some kind of confused and random bass and then to correct the things with...
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I do not remember which one I used. I remember that I was deciding if to mount them on chassis vs. to have a small board with tube sockets under the chassis and bring the tubes through the chassis. The board mounting is better as it decuples the tube...
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[quote user="msaudio"]
Romy If you would thank about what you are building and what it does, you would grasp the concept of my thanking. You have a 7inch hole on your bafflle with your woofer on the back side of it in a sealed box. The only...
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Romy,
No, the DAC was not set at maximum level (for best sound) while Cyrille listening to the system. It was set at normal volume for the whole system. When Cyrille dropped by, I was showing him the Field Coil open baffle speaker system which con...
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Romy wrote:
"...But adding mass to membrane change the dynamics of everything, it also increases the exertion as it will add moment of inertia of the cone movement…"
This is what I meant when I stated that it comes at a price. In an...
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[quote user="Paul S"]N-Set, why would you disconnect from the house neutral, unless you are using battery power??? This "neutral" is the "ground" leg of your circuit! The house neutral wire is typically white, and the house ground wire is typically g...
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If we look generally at stability from bridges to optical measurement benches, mass has one function - tune resonance or place it outside of the desired passband. Other methods are chosen when we want to convert energy to heat.Do we know what a "ligh...
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[quote user="mem916"] Oh, by suspension, I meant the tuned spring suspension that the versa (and many other 'tables) use to isolate the plinth platter, and arm from vibrations coming up through the floor and the stand. I don't think of a platter bear...
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I have a problem with how you are using the english language, Romy. You are using an absolute word (like absolute) to mean something you have invented and it is a relative thing. This for me won't do. I understand more or less what ...
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[quote user="item"]Part of the reason we call our computers 'transports' is to encourage people to think of the number-crunching part of an audio system in the same already familiar terms as a CD player - because all the same things matter: CD tr...
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[quote user="guy sergeant"] I don't think I'd be tempted to make a back loaded horn to begin with. [/quote]
Yep, it is what it is. The back-loaded horns might have as convoluted back path as Scriabin music is but the sad truth about them is th...
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This material is courtesy to Mr. Shibazaki, the owner of Sibatech Shop in Tokyo, that sell internationally Japanise Hi-Fi equipment.
http://www.sibatech.co.jp/
I hope that Sibatech people are more decent then our american distrib...
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[quote user="Romy the Cat"]
The bass traps, the biggest one, have only limited effectiveness on the spectra of interest and usually have much more effectiveness in 2-3 octave above the spectra of interest. This make bass to sound less problematic b...
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Congratulations on the construction and installation of your horns. May your pleasure at the results reward your effort and expense. I find their installed appearance even more geometrically striking than anticipated and I suspect now that some o...
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[quote user="be"]
Horns are of course some kind of band pass filters with different kind of ripples at lover cutoff and beaming at upper cut off, according to horn type.Maybe it should be added that contributing to the horn sound idea, is that the...
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[quote user="Paul
S"] Shaking from ULF is another matter. [/quote]
I think if such a woofer “ignites”
shaking within the attic then all bets are off and it need to be avoided by all
cost. To do “right” thing I would put pneumatic decompiled be...
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Romy wrote: "
If you do then please, educate me. ..................................................TEXT................................
I do not think that anybody would be able to identify it because the improvement we would get in ...
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enjoy_the_music,
I against all of it as it just does not make sense to me. There is a hypothetical problem and there is a cost-benefit to resolve the problem. There is also a cost of damage that the solution costs if to look at the result from a div...
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[quote user="anthony"]…. so my fingers
are crossed that I can keep temperatures manageable without a fan.[/quote]I do not think you need to be afraid of forced ventilation.
There is a feeling in Hi-Fi that forced ventilation is some kind of derivat...
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