Turntable isolation

[charlieboy]

Heres my attempt at an isolation box for my TT. For starters my TT is rather large so this box may seem overkill. The box is made of solid maple pieces. Maple is very good for vibration control. The box is 2 inches thick. It measures 6" tall x 24" deep x by 32" wide. The box is screwed together then Ii caulked the inside so no sand could escape. The box itself weighs around 60lbs. Then i filled it almost to the top with 100lbs of fine washed beach sand that I bought at Lowes for about 4 bucks a 50lb bag. Then I had a 1" thick slab of granite cut to the inside demensions of the box. I placed the granite slab inside and moved it back and forth checking it with a bubble level. Then I put the TT on top. Each material has a resonance point. Using 3 different materials sand, maple, and granite I tried to have the platform as dead as possible. Finally underneath the box are 8 2" brass cones. with the TT sitting on the box the whole thing weighs close to 275lbs. Here are some picture from the front, top, and side. They are not the best since they are from my camera phone but you get the idea. If it works out which it seems it will I will paint it gloss black and get a black granite slab to match all my other equipment, but I'm in in no hurry to do that as it weighs a ton.

 

[VinylHanger]

What brand paper towel is your resonance foot support insert.

 

[charlieboy]

That paper towel is made from a very non resonante material LOL! I forgot to remove it when I set everything up! Smarty!:yes:

 

[Wardsweb]

Nicely done. An isolation sand box is a dual purpose isolation/dampening platform. It not only isolates the surrounding area but it will dampen resonance coming from the table itself.

Here is my table sitting on my isolation sandbox. The top is glass, the box is filled with 25 pounds of #10 glass beads (used in bead blasting, finer than sand) and it all sits on Daruma isolation bearings.

 

[miner]

You guys have some beautiful tables. Makes my Rega P5 look dated.

 

[spartanmanor]

Nice

 

[Luckyman]

What brand paper towel is your resonance foot support insert.

It'sSCOTT to be a name brand!
Beautiful pictures of those turntable setups, guys!

 

[rulerboyz]

My turntable stand is also based partly on the sand isolation idea. The black wooden box is filled with sand. So is the black PVC pipe. Although the clear acrylic sheet connecting the pipe to the box does make the table more susceptible to footfalls than it would if the table were completely resting on the sand. I try to offset that problem by resting the box on a sheet of rubber. It's a relatively cheap turntable, not at all in the league of the extraordinary tables pictured above, yet this kind of setup does seem to squeeze out a bit more performance even from a modest turntable.