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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Making my little research on vibration isolation, I came across those fantastic pictures hereof how Proscenium suspension is made:http://www.6moons.com/audioreviews/walker9/2.htmlI've always thought that he uses some custom-made pneumatics,but those ...
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So here is the promissed picture of yet unfinished rack:It's huge (the columns are 10x10cm) but still quite elegant-looking in my room. The electronics rack on the rightwill be put inside the TT rack when I finish working on it. It's all thick (4-5m...
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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 green. The "extra", g...
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[quote user="Romy the Cat"]I do not know anything about Versa TT. I spoke with Tritium TT maker (about different subject) and he told me that various platter mass are available for his TT, including 100 pounds platter. Still, as mem916 point out: th...
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[quote user="Romy the Cat"]The point that you have EU (240V version) is well taken.... [/quote]LX, I wonder if in context of dimmer and PurePower regenerators the voltage of a given country make any difference. PurePower is essentially a power amplif...
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Well. That dude down my street in the esoteric shop would say "i feel negative vibration is in the air here"...Though "only positive counts" may sound very positive in the first place, it rather seems to be used for discrediting majority of opinions....
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hi anthony, have fun with that, results are worth it. Your findings don't need to match mine but i share my favorite briefly :)I found explanation from an famous german engineer. Hes calculating an Rms thiele small to indicate mechanical friction los...
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Wellington,It is my understanding that lead was used because it'a anti an anti-seize properties. The bearing fit is very tight and I suppose this helped with the lubricants of the period and is not a problem with modern synthetics.The bearing does no...
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My main 6 speakers are modified Edgar horns with 105 dB/ watt sensitivity, and the others are overhead emotive speakers with standard 90 dB/ watt sensitivity. There are two JL self powered f12 subs, and 4 self built subs with a sherbourn five channel...
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I would contend that most of the microphonics and feedback in valves is usually caused by the resonances and vibrations of whatever they are plugged into. Glass is very rigid which is only enforced by the shape into which it is mol...
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Yes, this English pace did not give a lot of new information. I know nothing about the AudioTekne Company. I like that they wrote about their bass driver but I do not know how much truth and the actual results behind it. I do think that they wor...
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Last 2-3 weeks I’ve been corresponding with a new reader of my site who sent me a few weeks back an email with a question:
“Romy, I read your comments about TTH and about “absolute tone”. Are you basically taking about timbres?”
That question made ...
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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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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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[quote user="Romy the Cat"]Stonily they are very similar in my view with a very slight advantage of 6E6P in delicacy and softness. I do not know what you mean “respond differently regarding vibration.”[/quote]As I had been looking at all these tubes...
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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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[quote user="Romy the Cat"]Jessie’s comments about my idea to position midbass straight horns from basement, upper- firing and his warning that the horn will get converted into a giant garbage can made me to think. I did not think about it but it is ...
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Audio people frequently go astray in their thinking and actions and this creates a good breeding ground for all possible audio sale opportunists. I would like to explore one moment that has not a lot of public attention and to look at the moment slig...
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Jim,
I do not know if you still fighting with 7788 noise but let me tell you something: those Allnic shock-absorbing tube socket adapters are insultingly affective. I act lay made some measurements and I was VERY surprised how much the Absorb-GEL ea...
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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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I ordered today from them the 6C33C dumpers and spoke with someone in there. Forthrightly speaking it sounded kind of ugly when the guy on the phone insisted to call the pads as the “anti-vibration instruments”. BTW, I did ask him directly if there i...
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Richard, here are a few comments of disagreement that might sound absurdish but I find them very.... indispensable.
The rules are always there and consequentially the data of the rules is always there. We might not have awareness - which particle o...
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My reference to air caps was purely a tongue-in-cheek reference to the voids in the coil. Of course the parasitic capacitance due to the propinquity of winding layers would dominate and here the dielectric is quite often Mylar.
It's just that the ...
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[quote user="haralanov"]I think you wanted to say reflection surface, not radiation surface, right? Radiation surface is the surface that is directly attached to the vibration creating element (the voice coil). So the radiation surface of the horns u...
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YE!Weeks ago I had a long thinking about it and posted the subject : primitive steps for standard soundI was thinking that how can we shape a standard idea to cover a primitive sound and how to standardize it .Well said romy we need these fields to ...
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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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[quote user="tuga"]I somehow feel that you should look into the vibration induced resonances that those rooftop horns might create.
I'm not really familiar with the all-wood building techniques used in that side of the Atlantic but I have a hu...
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[quote user="jessie.dazzle"]Romy wrote:"...I think the key factor would be the degree to which the driver is able to decimate the LF pitches..."Pitch: The property of sound that varies with variation in the frequency of vibration.... I decided to loo...
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[quote user="RF at Ona"] 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 su...
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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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