Thoughts On Turntable Clamps And Weights

@dwette As I have Plinth Size Boards, I have loaned a assembly of a Sub-Plinth / Sub Sub-Plinths with AT-616 Isolation footers.

This assembly has been used in a variety of systems for both Vinyl and CD Source and Valve Power Amp's. There has been enough discoveries made to strongly suggest this method is most ubiquitous I have encountered for producing effects on a sonic that are a improved attraction in a range of environments.

The Two owners of the P'holz Plinths referred to in the earlier post are both using P'holz Sub-Plinths in conjunction with their P'holz Plinths.

I made a offer to a Clearaudio TT owner to enable them to receive a free Permali Board Sample of a Sub-Plinth Dimension, this was not followed up on.

I believe the same sample offer may have now been taken up by a Garrard 401 owner.

If the Sub-Plinth was to be supplied by Taiko Audio, their remuneration for a daiza plinth would be close to £1000

 https://taikoaudio.com/taiko-2020/daiza-isolation-platform/?v=79cba1185463     

@dwette 

In order for a suspension to isolate a turntable from environmental noise it has to have a resonance frequency between 1.5 and 3 Hz. This is a mechanical filter in which you have a mass and a set of springs with a given rate to produce the correct resonance frequency. If the springs are not tuned to the mass you have an ineffective method of isolation. In other words all that other stuff does not work. Turntables that have such suspensions include Basis, SME, Sota, Avid, some Kuzmas, The LP12, Dohmann and I am sure I am missing a few. There are platforms that you can order or adjust for the mass of your turntable such as the MinusK and Vibraplane. 

And a mechanism for damping the oscillation at the resonant frequency.  Otherwise, the TT will constantly bounce at its resonant frequency, once excited.  How does a car do without shock absorbers?  This has been an issue with spring loaded TTs since the original AR was launched.  The AR was actually better than some that came later, in that regard.

@coppy777 

You and any other Rega turntable owner , you might want to try the Clearaudio Clever Record clamp  , it's lightweight and uses friction to hold the record down .

@mijostyn Thanks for the info.

My turntable is a non-suspended design. At some point I will try a Harmonic Resolution Systems (HRS E1X) isolation base for it. Those are tuned for type and weight of component, but it won’t work with my current setup space-wise. I have a isoAcoustics Delos sitting on top of a Naim Fraim rack that works well enough. I am in a smallish room (11’ x 17’) with large floor standers and a pair of REL subs. As it is I am getting excellent performance and don’t have isolation issues that I hear, even if I play bass heavy music at volume (although I mostly listen to classical and jazz at low to moderate volumes).

Next year I plan to move the system to a larger living room. At that time I plan to revisit siting my turntable, possibly on a wall shelf (I have a Solidsteel WS-5 in storage).

Still, I have no obvious isolation issues, so I’m not planning to throw an excessive amount of money at it. I have other priories. :)