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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Looking at the better photos, with a rear view of the LF speaker, the "felt-covered large port" is actually not the worst possibility (a quasi "IB"), depending on some things we can't see and how well that driver "likes" it. I can also see that what...
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Romy wrote:"...I usually suggest to set your new 6C33C tube for operation of 250mA-270mA, use it for a while and only then set 300mA..."This is what I did; in fact, I've had to leave them set at 250mA so that during warm up they don't go over 310mA. ...
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[quote user="Romy the Cat"]Ok, here is another subject. I feel that I kind of screw it up as I did not foresee it in my planning. What I need is to add some decupling devised to my horn in the location where it will be mounted to the surface of the ...
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Ok, here is another subject. I feel that I kind of screw it up as I did not foresee it in my planning. What I need is to add some decupling devised to my horn in the location where it will be mounted to the surface of the house frame. The horn will ...
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The problem of most solutions in high end audio is "one step forward, two steps back". Personally I prefer to hear all information/dynamics of sound even if the sound is out of control.when I use Isolation Transformer, AC filters (both parallel and ...
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Romy, thanks for the explanation.
I was not sure if you still kept an eye on that thread Romy. As far as I know you need to be logged in to view the images in the diy threads so I will post a couple here to show where...
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Hi Anthony Agree, waste is waste. The bigger the better. If you care bout sound too, i recommend the RG213 radio cable. Its perfect for that purpose. First, its coaxial which eliminates the inductance. Second its very hard so that during vibration th...
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Paul, I thought about the wall mount, but eventually decided to go with a more universal, pref. end of life solution, I could place anywhere. I've never had a dedidcated rack, a time to have one.The result is a slate-on-steel-frame 500kg mastodont, I...
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It seems reasonable to begin with the science -- as a preliminary to listening -- but I do not follow the logic here. The source of the vibration is principally the floor: the table should therefore not be coupled with spikes but decoupled from the f...
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[quote user="decoud"]It seems reasonable to begin with the science -- as a preliminary to listening -- but I do not follow the logic here. The source of the vibration is principally the floor: the table should therefore not be coupled with spikes but...
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...of wines and power conditioners and Bruckner and cigars. That said, I don't do cigars; I really, really do do Bruckner; power conditioners vary in their effect from place to place, day to day, and hour to hour (not only that, but most of them need...
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It's finally ass-embled! All in all I'm quite pleased, but I have to live with this mastodont in my room for a while to get used to it.Now I move to listening and repeat some measurements.The insert is on it's own independent pneumatic suspension:and...
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[quote user="decoud"]For sand to work here in friction does it not have to be load bearing itself: i.e. inside a steel cage that propagates the vibration through the walls there will not be much friction, no? What you want is a sandcastle.....[/quote...
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I recorded the output of my cartridge/ phono stage/ line stage with the stylus resting in a groove of a stationary record while playing a CD at high volume with heavy bass through another path. Since my system uses tubes I was also getting tube micro...
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The most terryfying thing is that the war was still possible in Europe...and this kind of war with heavy indiscriminative shellings...Yes Pieter needs time, but I haven't been pushing too much. We have bought silver wire so it sits there and waits. I...
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[quote user="Romy the Cat"]fiogf49gjkf0d1) 3) The common mode filter you have at the PS’s input- why do you use them? They do eat some dynamics. As many time I removed them from all imaginary components as many time I witnessed better sound. ...
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I ran across this Negative stiffness isolation platform (the anti Viagra??) independently but I should have known the Cat had pounced years earlier. It is hard to tell how much the concept has advanced since 2007 as I only found one firm doing it (Mi...
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Since I am now in the Super Zarathustra conceptualization mode am paying attention to the hybrids out there.
http://www.goodsoundclub.com/TreeItem.aspx?postID=2362
I still do not see any interesting Class “A” hybrids but it looks like regular AB hy...
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Excellent post Romy. Definitely the room treatments and speaker locations are probably the most important part of the overall system. I have heard good speaker systems in poor surroundings, if the setup isn't right, nothing c...
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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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[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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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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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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Hello Haralanov,That's a nice strong heavy box you have there.You might want to check and add some more sand in the future because vibration helps the grains to adjust which in turn reduces volume.[quote user="Romy the Cat"]10) Do you know that you...
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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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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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[quote user="noviygera"]I feel that the best candidates are metal springs. 1. They won't compress or deteriorate quickly.2. They work good in the used freq. range.3. Easy to replace. Easy to tune by adding or removing springs.4. Easy to float the ent...
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