2. misc-audio
  3. 155953-111474

Damping between shelves and sandbox

My turntable is sitting on a sandbox. On the top of the sand I have an inch and two inches thick maple board. Between these two wooden boards I am using cork coasters. I`d like to find a better solution, but I don`t really want to use glue. I am thinking to get a non slip mat, but searching for better alternatives.
What would you use?

Both, the turntable, and the int. amp sitting on a DIY sandbox and plinth. The plinth is a bit smaller than the box, so It`s not touching the wood corners but sitting on sand. But, handling sand can be messy sometimes.
What would you mix with the sand so It`s not creating dust?
128x128korakotta
geoffkait's avatar
geoffkait
23,365 posts
 
Don’t worry, mc, your secret is safe with me. It’s protected by Audiogon teacher-student privilege. Everything is topsy turvy. Me topsy, you turvy.
bobedwards101
176 posts
 
use something like delft clay or petrobond casting sand. 
jmeinhar's avatar
jmeinhar
13 posts
 
Maybe try plywood instead of mdf or solid wood. Works very well for me ... no tt experience though. Best plywood would be "Panzerholz" (I think it's called phenolic plywood in English). Very heavy, used for cars and trucks and tanks (Panzer in German), but very expensive too.
geoffkait's avatar
geoffkait
23,365 posts
 
If you must use sand let the dry sand do the isolating but everywhere else you wan to use extremely hard materials so that energy is rapidly Evacuated out of the system.That’s why I eschew soft materials like Sorbothane and rubber and lead and relatively soft cones like carbon fiber and brass. Step up to the plate and get some hardened steel cones or the NASA grade ceramic cones from Golden Sound. Springs are a better solution from a SQ perspective, that’s why the sandbox guy at Bright Star went to springs a long time ago. Twenty some odd years ago to be precise. Hel-loo!
rixthetrick's avatar
rixthetrick
1,060 posts
 
Springs just as goefkait said.
Preferably under a mass loaded shelf.

And put your loudspeakers on springs with a solid substrate underneath, it will improve EVERYTHING! Obviously finding the correct springs for the load they are bearing is important.


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