Turntable isolation

Discussion in 'System and Room Tweaks' started by matteos, Apr 13, 2018 at 7:06 PM.

  1. Mister Pig

    Mister Pig Active Member

    I have my doubts about the roller block idea under turntables. I have a hard time coming to grips with the idea that horizontal movement should be accepted, and this would have no effect on the stylus in the groove. As I think about it, i do not see where the table, arm, and stylus will end up moving in unison to any kind of vibration or subtle movement in the horizontal plane.

    A number of years ago i DIY's an isolation platform that was two layers, with the mapleshade type pads as one level of isolation, and then a set of roller blocks in cupped holes in the first layer of wood, and a second layer on top of that the component sat on. The platform changed the overall presentation of the system, but it was not an improvement. I tried cones in place of the pads, and it once again was different, but not an improvement. I ended up calling it a failure, and got better results with cones directly under the components.

    While I can understanding absorbing unwanted energy, or sinking it away from a component, I cannot see instability to a turntable being an advantage.

    Regards
    Mister Pig
     
  2. Mr Pig. I put a 2 inch block of maple wood under my turntable and it sounded like crap. Worse than not having it at all.. And that's my new turntable.. The one you recommended!! Thanks by the way because it's good. But did you truly try this? I did and the difference was apparent.. It was really obvious. I implore you to give this another shot.
     
  3. If you want. PM me. I've got three ball bearings and three cups spare in my house. I'll send them to you. I know you've got some serious audio.. Hit me up If you want. I think the difference is big. I'm happy to send them. Report back on whether they make any difference.
     
  4. MikeyFresh

    MikeyFresh Moderator Staff Member

    Not insubstantial, but also a great price performance ratio in my experience so absolutely no regret.

    I have a 3-level Basic.

    If I win the lottery I'd certainly instantly order their copper legged Osiris.
     
  5. 4-2-7

    4-2-7 Smart Ass Member

    I don't know why nobody copies the SOTA table system. The out side plinth can be made easy, the hanging sub chassis can be made easy and the outside plinth feet go though that with springs connecting the two.

    Now we take a flat board with 4 studs and 4 holes on the top of the plinth. Just like the plinth supports it's self thought the sub chassis through holes, the studs on the board will stand on the floating sub chassis not touching the outer plinth. Then any table will sit on top of that, the spring choice is dependent on the combined weight above the sub chassis.

    The goal would be a very smooth movement





    The reason the SOTA works and you don't get skips, is the movement isn't harsh or abrupt. It moves freely and smooth from start to stop of any agitation.
     
    Last edited: Apr 14, 2018 at 3:36 PM
    MikeyFresh likes this.
  6. TubeHiFiNut

    TubeHiFiNut Administrator Staff Member

    The Micro Seiki RX1500VG is a very high mass table - 80 pounds total (the platter is 30+ of those pounds). Other than the silk thread drive, the motor is decoupled from the arm/platter section.

    I want it firmly and securely in place. ;)
     
  7. MikeyFresh

    MikeyFresh Moderator Staff Member

    Ok below are a few older pics, sorry again if this amounts to off-topic in terms of turntable isolation (or in my case lack thereof).

    I'd tend to agree with the above posts that Rollerblocks are not optimal for many turntable designs, though it could work for some. Symposium does have that Segue ISO I posted on the previous page, and also a much more involved Quantum Signature platform meant for the VPI HRX type of table, those look much more appropriate for a vinyl spinner.

    My Arcam DV-29 on RollerBlock Series 2+ (please excuse the crappy old camera phone quality photos):

    IMG_0238.jpg

    The Musical Fidelity A308 on Rollerblock Jr, PS Audio DL III on RB Series 2+, and DSPeaker 2.0 on Svelte Plus w/Precision Couplers:

    P1000551.jpg
     
    Last edited: Apr 14, 2018 at 6:26 PM
  8. airdronian

    airdronian Junior Member

    Wow. Had I seen that SOTA would have been on the radar for my last TT purchase.
     
    4-2-7 likes this.
  9. 4-2-7

    4-2-7 Smart Ass Member

    I think and have see many make the SOTA their last turntable. In fact one of my tables came from a 79 year old audiophile who bought it new with a SME Series V arm and a Sumiko cartridge back in 1986, It was his last table. I don't see any reason to change tables, even though I have bought others to play with. But inexpensive or high end, nothings bumping them out of the system.
     

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