Vibration and Isolation

[bainjs]

I'm thinking of building some for my speakers.  Would you still use the Raquet Balls as feet? I don't have carpet.

Thanks

 

[Grainger49]

Bainjs and I are considering build a couple of these for our turntables. 

Thanks for the update.

It has been about a month now and I have been checking the level of the turn table. No change so far. I think the tapping with must have helped a lot. Very pleased with the results.

 

[Thoburn]

I'm thinking of building some for my speakers.  Would you still use the Raquet Balls as feet? I don't have carpet.

Thanks

Hi,
I think for the price it is worth a try. I kind of like the superball in washer idea as well. I wonder if 'floating' speakers is the right thing to do. It seems to me that most speakers use spikes to 'anchor' them solidly to the floor. I think that keeping the driver frame from moving lets the cone transfer as much sound energy as possible. Just a guess on my part.

 

[Grainger49]

Joel sent the box, beautiful work!  I bought a bag of glass beads from Harbor Freight.  I have ordered a piece of glass and I have veneer to finish the box front and sides.  Then it all gets loaded into my shelf below my VPI table.  

Thanks to Joel (bainjs), and all the posters.  Here is hoping!

Edit: I thought this link was in here but I didn't find it this morning.  This is another vintage Bottlehead pRC:

http://www.cognitivevent.com/sandbox.html

 

[Thoburn]

I used 3/8 inch poly carbonate instead of glass as that is what the design called for. I have no idea if it makes much difference. Still no sign of uneven settling. I'd like to hear about other folks results. How is it sounding?

 

[Grainger49]

I think you were looking at the pRC site and I was looking at the Wardsweb site.  They call for slightly different setups.

 

[bainjs]

I went with the real cheap and made mine from 1/2" MDF.  No settling here either. 

 

[magnafuzz]

After reading this thread I built up a sandbox for my Rega Planar 3. I built it to match the dimensions of my TT to hide things away and tried to make it look like it was part of the TT. Now the base will match my Crack and soon to ship Seduction. I used 3/8" poly as well. For feet i used soft foam hockey pucks, works well. I also use them under my weighted speaker stands (my springy floor creaks and shakes when my speakers are directly on the floor).

 

[Grainger49]

Andrew,

That didn't look like a sandbox till I read the text.  I clicked on the thumbnail first.  It looks like a turntable with a "normal" base.  Nice job!

 

[4krow]

For those of you interested in using washers for super balls to sit in, I have been using Sorbothane rings for some of my projects. I found them on ebay for a really cheap price. They are 30D, which means they are soft. Each one is rated for 5#, so, a series of them would be very effective. I think I paid $9 postage paid, and shipped really fast.

 

[4krow]

I forgot to mention that for $9, you get a set of four.  Sorry

 

[Grainger49]

Well, I am nearing completion.  Joel Bain, bainjs, built the box.  I bought a bag of glass beads and a piece of glass for the "raft" in the swimming pool.  The veneer looks much better in this picture than in person.  We won't talk about my first veneering attempt.

The plastic jug is full of glass beads, the rubber mallet is for hitting the box to make the beads settle.

I screed, and screed, I don't think I can scree any more!  Now to bring it upstairs and float the raft.

The box and beads weighs about 30#, the turntable another 30#.  I have four Audio Quest sorbothane pucks under it.  I think they will go flat!

 

[4krow]

Grainger, It is projects like this that keep me inspired. Simple in some ways, but labor/time intensive. Most importantly, effective in the end. Think of what some company would charge for such a product, and it probably wouldn't be EXACTLY what you want. That is the very reason that I make as much of my own things as I do,  I have certain expectations. Don't ever stop experimenting.