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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I needed to lift my PP1500 off the carpet as it had not enough air circulation. Somewhere in the PurePower materials I read that vibration isolation is advisable, so I decided to kill two birds with one stone. I've got a set of nice metal roller foot...
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Interesting device: Accurion Workstation_Vario....
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[quote user="N-set"]Anthony, I'm sure you realize that air springs and bearings can only isolate from the structure born vibrations. Placing the tubes so close to the speakers you give them a great chance to catch strong airborne vibrations. Or will ...
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[quote user="Paul S"]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 conne...
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Interesting… I was under suspicion that only Vibraplan allows LF decoupling but here is another California company the offers an alternative solution.
http://www.minusk.com/
The Vibraplans did work fine and the principle was very simple, I read wha...
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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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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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It took a LOT of time in CAD using what I had learnt from building the power supplies and then adapting it to match the requirements of the rest of the system. I have decided to mount the DSET on the horn stack and direct connect the speaker cables....
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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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[quote user="Romy the Cat"]Generally I like it but I have some concerns, whatever rubber
feet and decompiles you will be using you will not defeat the vibration if you
have a few transformers and a few 500A input chose sitting at the bottom. You
w...
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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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[quote user="N-set"] I'm looking for a nice material to interface between the steel frame and the slate topas a contrained layer--would be a sin to loos such an occasion for constr. lay. damping.After some research, Sorbothane seems unsuitable as it ...
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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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[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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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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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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A very nice made rack. I do not know if “stupid, indiscriminative mass loading is a road to nowhere”. To me all of the solutions with rack design are road to nowhere. There are many reasons why some of the solutions are better or worse and they all d...
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Paul, as you write the pendulum effect is unfortnately unavoidable if one wants the levelingfreedome of spikes, so I try to live with that. I looked at Walker...tjaa....$1750 for a record clamp...I also saw how he works on his suspension (look at my ...
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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="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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OK, I understand now when you talk about suspension and will translate to "bearing". I don't know if it needs to be the turntable or the stand but something needs to be responsible for isolation. I have heard good things about the vibraplane and wo...
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[quote user="Romy the Cat"]
RF at Ona wrote:Personally, I think it debatable whether the mouth edge should be free or attached as there are desirable aspects to both approaches. If attached, it need not be attached with great pressure. Robert, ca...
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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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Agree, it is very good. For the vibration isolation, I would
worry only about the driver tubes. If you have some money to waste then you might
look for ALNIC made tube sockets vibration dumpers. They are VERY effective and
if you buy them in bulk ...
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[quote user="Romy the Cat"]I engaged is a discussion about my IB project with some guys
who do IB for a while:
http://ibsubwoofers.proboards.com/ , the My Projects Section, I think you need
to login to get it…
What is interesting is that the...
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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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You can improve the vibration decoupling by lessening the weight on the horn mouth edge.
There is no need for the edge of the horn mouth to bear a great deal of the weight of the heavy end of the horn, although that seems your current plan. Th...
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In his RMAF the Federated Mike post some comments about his use of ML3:
http://www.audiofederation.com/hifiing/2008/RMAF2008/report/1500/floor_9/#audio_federation
Even though his comments from my point of view have “issuers” but Mike’s comments sti...
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Maybe make a manifold and mount drivers vertically in push pull. No sagging, much less vibration. But I would not use fiberglass insulation behind the bass channel and remove any existing fiberglass in that area, replace with cotton/denim insulat...
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