homemade turntable vibration isolation platform


Out of a couple years of frustration, I irrationally tried to create my own turntable suspended platform to cure two problems. First, footfall would often jar the stylus enough to skip and my music seemed muddy/blurry. The floor bounced enough to make us have to tip toe through the living room. It was getting where I would hate to even play a record. I went searching for tweeks. Ideas abound. Ropes from ceiling, etc. But I live in a yurt. Everything moves, including ceiling beams. Floor works like trampoline (almost). Out of complete desperation, I drilled holes in the top of my component cabinet (double 3/4" plywood) and suspended my turntable on another piece of plywood by bungees from four posts. I got lucky!! It worked fantastically. One could almost jump up and down in the room (my wife tried). AND, a solid bass appeared, soundstage grew a third larger, the clarity was enhanced exponentially. Pure luck I cured my years of frustration and got an indescribable upgrade sound quality besides. After 6 tries I've recreated a free standing unit that works as well. Just had to share.....  


allears4u
That's why I say I got lucky. Without any special knowledge, out of abject desperation, I built this suspended platform. I realized just how lucky after I tried to replicate it in a different form. Footfall problems even got magnified in one attempt. Lost clarity.  Once right, the platform actual will slightly swing or sway after I place record and stylus. One thing that still stuns me is how sound stage size added a quarter in size above the one I had grown accustomed to before. And I do mean, above, that is, audibly higher in the room. AND, the whole is less tube like and natural.  I think my Sunfire sub HRS-10 was really blurring everything. 
Clever and effective. The best frequency is between 2 and 3 Hz. You can tune it by adding mass. If you get it right you should be able to jump up and down indiscriminately. The improvement in sound is also no surprise. If you get a SOTA , SME or Basis you can put the turntable anywhere on anything and it will do just fine. IMHO an isolated turntable is a must.
 
As for mass...a 2 pound record weight rides along to keep things solid. Deer skin platter mat. Cambridge Audio phono pre amp. The analog fever on the cheap. Leveling is perfect due to easily adjustable toggles on mid weight bungees through posts.  =Found out the hard way, the bungees must not touch plinth. Added Iso feet under free standing frame.   
@allears4u

Is it possible to see a photo to see and understand the structure as it is made?
For pics please send to my email at : [email protected]. Sorry for inconvenience....I'll respond with pics from there....sorry again...thanks for interest....I'd like to see if others will experience sound improvements like I did. Easy to build, once you get the lengths of bungees, distances,  and all that stuff right.