Turntable Isolation platforms?

[bsujeep]

I was going to give this a try a few weeks ago and went to a couple local box stores and ALL of the slip-n-grip's that I found were no longer concave. They looked just the same but with a flat bottom like a cup. I decided I would have to find another direction.

Home Depot had one package that was concave on the clearance rack, but the ones on the shelf were not.

 

[Brett a]

...Set this board on an 12" or 16" inner tube inflated just enough to support the board and your TT, off the shelf, this will be around 10 PSI. ....

I tried racquetball halves, similar to the inner tube theory. But with my hundred and five year old suspended wood floors, it turned my TT into a hippity-hop.

I added more for stiffness and still had terrible woofer pumping with footfalls.
I took them out and everything was OK. I wonder if the inner tube or racquetball application only works on concrete floors.

I also would think the wood balls and wood cups would have too much surface resistance from the porous wood fibers to move freely with the tiny vibrations you want to address. But if you get good results, you know better than me. I've known folks to use steel ball bearings and tablespoon heads before for the same application.

I've had good audible results from sandboxes. I made one for my Rega.

Post with pictures here:
http://www.audiokarma.org/forums/showpost.php?p=2396080&postcount=35

It helps to drain away the vibration from the TT its self as well as isolate it from outside influences. It makes a subtle but important difference to the noise floor/soundstage clarity.

 

[jleon92f]

Platform project

I started my platform project. The wood. 18.5"X15"X1.5".

Thanks,
John.

 

[ZebraBlvd]

Has anyone ever tried these isolation feet? While the theory makes since, it would require some deep pockets to purchase them. Just don't know if it would be worth the investment in regards to the ROI.

Clearaudio Magix Magnetic Levitation Isolation Feet​

 

[cfranz]

Personally, I like the 12" bicycle inner tube solution. Cheap, works well.

Although the tennis ball solution is nifty also.


Oh, yes... and "Clearaudio Magix Magnetic Levitation Isolation Feet".. I've not used them so take my points with a grain of sand (which also uses for damping vibrations)...

They do an excellent job of almost completely seporates the rack surface from the turntable... However there are a few things to conside. If it is in fact just opposing pole magnets, damping is an issue. You can get a lot of sympothetic vibrations as the magnets return to the stasis point. Also, they help almost not at all with vibrations in the air transmitted to the TT.

 

[jleon92f]

Has anyone ever tried these isolation feet? While the theory makes since, it would require some deep pockets to purchase them. Just don't know if it would be worth the investment in regards to the ROI.

Clearaudio Magix Magnetic Levitation Isolation Feet​

Too rich for me, I would buy a new tt for that money.They do look cool though.

Thanks,
John.

 

[markallen]

My cosmic-ray powered anti-gravity module does a great job of isolating. NUTHIN' on earth disturbs MY TT setup, except sometimes it wants to float away. But that's a small price to pay for perfect sound.

 

[Arkay]

If you have the money, something like the Minus-K laboratory grade isolation platforms would be wonderful. They are designed for use with things like scanning electron microscopes and the lasers used in brain surgery, where even tiny vibrations are unacceptable.

You have to have one designed for a weight range that includes your turntable's weight, but that isn't a problem; they now make them specifically for audio gear!

The problem, really, is the price. Basic units start around $3000. But look for used ones when medical labs and precision factories and such are closing down; they can be dirt-cheap then, if you are lucky.

I found one for about ten bucks. ...and was too stupid (ignorant of its value, although smart enough to be sorely tempted) to grab it immediately. It was gone (to landfill/recycling!) when I went back for it. :tears: :twak: :tears:

 

[Rybeam]

Puma, is that a rare Machina Dynamica Sound Cat with magic pebble eyes ?

 

[jleon92f]

Test One today.

Before I finish it, Veneer or Paint?:scratch2:

Thanks,
JOhn.

 

[jleon92f]

My cosmic-ray powered anti-gravity module does a great job of isolating. NUTHIN' on earth disturbs MY TT setup, except sometimes it wants to float away. But that's a small price to pay for perfect sound.

:lmao::lmao::lmao::lmao::lmao:

 

[pioneervato]

For pine or dougl fir I would probably paint. But before you do that John, I would recommend knocking down the sharp edges with some sandpaper and roundover the corners some. It will look a whole lot better I think. A router with a 3/8" roundover bit would do the trick very nicely if you have access to such tools. Some finish sanding and you are good to go.

So can you tell any difference in sound?

 

[jleon92f]

For pine or dougl fir I would probably paint. But before you do that John, I would recommend knocking down the sharp edges with some sandpaper and roundover the corners some. It will look a whole lot better I think. A router with a 3/8" roundover bit would do the trick very nicely if you have access to such tools. Some finish sanding and you are good to go.

So can you tell any difference in sound?

I played some Sinatra and Fleetwood Mac so far, WOW there IS a very noticeable difference in the clarity and the sound stage! Awesome! Bass is cleaner and has punch!

From a block of wood?


Thanks,
John.

 

[Old_Tech]

Test One today.

Before I finish it, Veneer or Paint?:scratch2:

Thanks,
JOhn.

Stain it then tung oil.

Look at the wooden guy with the light! :wave:

 

[jleon92f]

Stain it then tung oil.

Look at the wooden guy with the light! :wave:

Thanks, I forget about those guys, they are the helpers...Is Linseed oil OK? Don't have any Tung oil here.

Thanks,
John.

 

[Old_Tech]

Thanks, I forget about those guys, they are the helpers...Is Linseed oil OK? Don't have any Tung oil here.

Thanks,
John.

No don't use that it never will dry. I just wanted to say the natural finish looked awesome. You could stain to richen the grain and then poly the wood...
That would look cool too.

 

[wushuliu]

Suprised no one's mentioned the $13 Ikea LACK table/DIY rack that Ken Lyon advocated and is all the rage on other forums...

 

[jleon92f]

Suprised no one's mentioned the $13 Ikea LACK table/DIY rack that Ken Lyon advocated and is all the rage on other forums...

Hi, Thanks for the info on the LACK tables. I have a Ikea right near me. Are they using the table as a seperate table for the TT alone or are they cutting the top down?:scratch2:

UPDATE: The LACK tables are Hollow inside, not a solid piece of wood.

Thanks,
John.

 

[Puma Cat]

No, it's the Stalking Leopard Resonance Killer!

 

[jleon92f]

For pine or dougl fir I would probably paint. But before you do that John, I would recommend knocking down the sharp edges with some sandpaper and roundover the corners some. It will look a whole lot better I think. A router with a 3/8" roundover bit would do the trick very nicely if you have access to such tools. Some finish sanding and you are good to go.

So can you tell any difference in sound?

I have to sand it some more and choose a finish.

Sound is much more life like..Close your eyes and you hear all kinds of new stuff.

Thanks,
John.