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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Paul, I can olny speak within my context and with no audio tests, only knuckling.I use pure silca sand in 3 granulations (2 of them fine unfortunately), mixed with steel shots.Of course the sand is there to quench the steel ringing. But while achievi...
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N-set, you may remember that from the beginning I encouraged you to try a wall mount, for all the reasons you have just cited, and this approach seems even more obvious if the walls are concrete/masonry vs. floor joists and sheet subflooring, not to ...
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[quote user="Romy the Cat"] I do not know if “stupid, indiscriminative mass loading is a road to nowhere”. [/quote]Let me try to explain why I think so. Adding mass (e.g. sand+shot loading of steel profiles):1) makes the vibration amplitude smaller f...
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[quote user="Romy the Cat"] Very slick and very inelegant. [/quote]Hahaha, thank you Romy :)[quote user="Romy the Cat"] Juts to ice the cake I would provision 4 hooks atop of the insert that would allow you to hang the insert to the air-suspended pla...
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I used those VPI magic brick sitting on top of the transformer, my audio analyzer tell me that these bricks helped the noise by about 1db, may be the 6 lbs or so weight does damp the xformer vibration, so I leave them on, just trying everything to ke...
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[quote user="Romy the Cat"][quote user="drdna"]As I had been looking at all these tubes I began to also inspect their interior construction. This will amuse you: one thing I would do is to hold the tube right up to my ear so the glass would be touchi...
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A few years ago somebody, I think it was “drdna” from California, told that he has a habit to listen the mechanical noise of the tube hold the tube at his ear by hitting the balloon of the tube. I did not exactly acknowledge it at that time as it was...
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I totally am a believer that the construction of a tube determines how it will sound. This makes perfect sense when you consider the tube is relies on the changing flux of electrons in a vacuum. It is easier at least for me to visualize this as a ph...
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[quote user="floobydust"]I do agree that the internal structure makes a big difference... but, if the tube specs properly and has adequate immunity to mechanical induced interference, then you should not be able to discern any major difference in sou...
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Romy,
I assume you plan to use one of these as the driver tube. Do you distinguish any difference in the sound between the two tubes? I am curious as I have been looking over a big pile of them and they respond quite differently regarding vibrat...
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I site visitor, whose midbass horns I heard and liked, sent me email describing how he made his 50Hz horns: “The horn’s walls having an inner layer of 3/4 inch high density compress board and outer wall of 3/4 inch high density plywood with a 1 inch ...
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Modern automotive sound damping is typically focused on "shaping" a targeted range of frequencies, based on how engineers want the cabin to sound and feel to the driver and passengers. No reason why audio damping should not also be targeted, for the...
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I am not and expert in wood construction, all the building we do around here is brick and mortar, but, If you get the Horn wall close to the roof you could fill that space up with that spray expanding foam. The side of the Mid bass horn will be sti...
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[quote user="Michaelz"]Where does this come from? [/quote]It coming from a danger that we all under what we think about those things. With all our desire to equate loudspeaker with a musical instrument this comparing might be juts figurative as a mus...
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[quote user="guy sergeant"]Are this company thinking along the same 'Oops' lines?http://www.layeredsound.com/index.html[/quote]I have some experience with the 'Layered Sound' concept and although I haven't read all of this thread, I think that it doe...
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Hi Romy,It seems that the idea of tone is not only lost to most speaker designers but to most electronics engineers as well. When you hear the excrement most designers call an amplifier you would swear that they have never not even once heard a real ...
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http://www.cascadeaudio.com/marine/vb_1x_damping_compound.htm After reading the tech notes on VB-1X, I have difficulty with the manufacturer's claim that the product is effective at damping frequencies down to 10Hz, when at the same time they specify...
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I got some time on the PC to start to think about how to layout the DSET. I plan to build it a little like a skyscraper: multiple levels separated by component groups and functions. So mains transformers, AC socket and perhaps time delay rel...
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So I am currently working towards this concept for my Macondo (see below) and I have just the Upperbass horns left to turn and prep. I am thinking about how to best integrate the DSET with Macondo and have come up with something like this… Perha...
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There are a few manufacturers out there, Minus-K, Halcyonics, Vibraplane...The Vibraplane is a good unit for the money, I have no problems with it and it does the job the way it should.Those Vibration units work different from construction and are ve...
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[quote user="Romy the Cat"]David, I think you a bit overly glorify the notion of "precision instruments" that we all are a bit taken in high-end audio. If you go to a good hobby shop and by a microscope for 200 dollars, or lawn mower for $300, or a k...
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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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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 transports vary according...
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Koetsu are crap and it is sad that some ognorant or criminal people crated so much hype about it. Might be in past it was better, as it was proposed above by somebody in this thread, but I doubt as I know people who drooled about Koetsu 20 years back...
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[quote user="Romy the Cat"] Why do you feel that uniform "floating" rotation is possible only with N amount of drives? [/quote]I don't feel it's the only way :-)[quote user="Romy the Cat"]Let look in this deeper. A single drive would it be idlers o...
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If you can do it, try isolating both cases/chasses from your "ground plane(s)". Use one inclusive "ground plane" for both the PS and the gain/RIAA sections, and ground this "ground plane" to the house "neutral" wire. Do NOT connect any shielding to t...
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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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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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[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="Paul S"]N-set, what about LFs sound and music choices, and how does this vary from your own choices and expectations?
Paul S[/quote]The bass was dominating very much the spectrum and thats +\- the only thingthat stayed in my memory. It ...
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