Feet

[Harderror]

Just built this new base for my Technics sl1300. Want to put feet or some sort of isolation something or other on it. Any suggestions? I know, I have to get it off the stand that it is on. That things rings like a string.

 

[tade]

try squash balls cut in half. These are hollow rubber balls.
Also, you could cut two matching sheets of board and in between them glue a bicycle inner tube. You can then inflate this to whatever psi is necessary.
Good luck

 

[sreten]

Hi,

Another variation on the squash balls in to use them complete.
In this case you fit retaining rings to the plinth, a simple tube.

Then choose your speed of squash ball, I think yellow spot.

/sreten.

 

[earsandeyes]

experience with squash balls and tubes

I have used squash balls for over 2 years. I did not monitor regulary, but noticed just a month ago that my table (sandfilled) was tilting.
The squash balls (yellow dot) detoriate unevenly. They are still laying on my workbench, first the dimension was eliptical ball Dmaxmin=3:2, after the last weeks the relaxed to 4:3 average.

Now I am using a tube, not glued, fixed between to rims.

By the way I only use this construction because of WAF. I have to keep my deck in a kind of cupboard, when not in operation out of sight. When WAF is not a problem I would first experiment with rigid construction and different top platters, wood, MDF, reinforced glass, marble etc. and some spike type of things.

It is my feeling/experience that it is more important to get the "energy" out of the turntable/deck then the otherway around.

In my case the cupboard construction urged me to do it also the otherway around.

For what it is worth

regards,

E&E

 

[Harderror]

Thanks guys! I have started using a bike innertube and all traces of sound and vibration are gone, not only in playback, but when I put my ear on the plinth and bang on the table that the turntable is sitting on! Man the bike innertube idea is fantastic. I am drawing up plans to build a platform that will hold the innertube and allow the valve to come out the side with teh tube in an evenly distributed labyrinth like shape. I will post plans sometime in the future.

 

[tade]

Awesome! With your great results I will build one of these ASAP!

 

[rabidlistener]

Have been using bike inner tubes for some time now to support my modified Thorens TD 125 and they certainly work.
The only thing I have found with them is that tend to go flat over time and need reinflaiting - this even happens with the thick 'thorn proof' ones that are used by mountain bikers. I suspect that the valves could be the cause?? I intend to seal mine when I get round to spring clean my system.

Mike

 

[Raoul]

Here is a variation on the inner tube design:

http://www.audio-ideas.com/reviews/analog-sources/rega-tweaks-3.html

Also has the valves accessible from the exterior of the box as Harderror suggests.

 

[tubee]

Want to put feet or some sort of isolation something or other on it. Any suggestions?

Look for comercially available Isonodes, nice dampening spheres to glue under cabinets.
I made some myself, from 2 component silicone which hardens till a soft rubber is left. I molded them in contact lens disposable packages, they had a half sphere cup. The rubber is used to make a mould of an ear Concha for hearing aids! (am now educated for hearing specialist)
The rubber works fine but is a little slippery, the speaker which i provided the stands can be shifted easily from its place. Maybe the rubber has to be grinded a little with sandpaper.