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Sandbox Design Advice

I understand the recommended design is to build an open wooden box plus a loose lid (possibly granite) which is slightly smaller than the internal perimeter.

Fill the box with kiln dried sand, float the lid on top of the sand and then component on top.

Heavy duty sorbothane feet for the box.

There were a few design details i couldn’t find on the forum and so pl can anyone advise on:

  1. what size should the gap be between the lid and the perimeter?
  2. how deep the sand should be for a 52 kg power amp (114lbs in old money 😀)?
  3. i am going to use a carpenter to make it for me (pine?) and would like a professional finish in black - any suggestions? 

thanks very much - advice is much appreciated.


soma70
rcprince
3,061 posts
 
The only thing I'd add my voice to is using a wooden plinth, not granite.  I used to have a pair of Bright Star bases under my Jadis monoblocks, which worked well.  I would suggest making sure that any sand you put in the box is thoroughly dry.
soma70 OP
153 posts
 
Hey Geoff, I have always enjoyed your posts and this one is no different. 
soma70 OP
153 posts
 
thanks rcp - will do.
soma70 OP
153 posts
 
thanks dga. appreciate the input.
bdp24's avatar
bdp24
9,510 posts
 

For the sand, look for Silica. It’s a non-organic man-made product used in sand blasting. It comes in many grades (the size of each particle), from powder-fine to somewhat coarse. I used No.60 in my Bright Star Big Rocks, just the right grade imo. I found some at a local construction supply yard, less than ten bucks for a 50 lb. bag.

If I remember correctly, the Big Rock was about 4 inches deep for the biggest model, half that for the smallest.

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