DIY TT

@pindac 

I'm sure we would get along great.

I've found that the choice of materials is extremely dependent on the environment.  When my listening room was on a suspended floor, my old Logic DM101 (similar to Linn/AR/Ariston), but also similar to Sota (3 point suspension hung from springs) worked best at isolation when using either a low or high mass stand.  Where my tables are now, foot falls and structure borne vibration aren't much of an issue.  The platforms are more about preventing airborne vibration from reaching the platter and arm, and also about the ability to precisely level the plinth and platter.

I recently purchased a Board of Densified Wood, the Panzerholz Brand, solely to be used for TT Plinths.

A change to how I am living is creating the need for me to put the HiFi system into storage for a period of time.

With the change of plans, I have made use of the P'holz as a Sub Plinth Material with AT 616 Footers, and used it on a Valve CDP Design and a Garrard 401 TT, in two different environments.

When the devices were mounted on the footers AT 616 only at the latter part of the listening session, the benefit of the P'holz was immediately recognised for its positive influence on the SQ.

When I am up an running again, I will carry out my own further trials for this material.

There are a few companies offering P'holz Sub Plinths as their sale items, and the asking price of $1200+ can be found.

I am sure the uniqueness of the Water Stains on my boards give them a sonic superiority over the fluted designs on commercially of P'holz items😁   

Dear @vinylzone  :  " I don't need that kind of isolation.  No structure borne vibrations make it to the plinth.  The sub floor is a cement slab.  "

Vibrations or resonances at microscopic levels has a direct influence in what the cartridge stylus can pick up due theat the cartridges are en extreme sensitive to any kind of " movement ".

Seems that your statement is mainly subjective and I think that you need to measure as @mijostyn posted, I' agree with him .

Several times with original stock TT/onearm designs we just can't be aware of those microscopic " distortions " because due to the resolution levels of the room/system we can't be aware of that or maybe because we don't yet know what to looking for but what you can be sure is that those " distortions " exist and modulates the kind of colorations you are listening in your system.

Of course you are satisfied with what you have and looking that you like the DYS kind of work making measurements of what you did could be interesting for you or maybe you just don't care about.

R.

What Raul says is undeniably correct, but I don't think a spring suspension is a panacea that puts an absolute end to "vibrations and resonances at microscopic levels".  In fact, in some cases, or if badly implemented, such a suspension can make matters worse.

@lewm  , you always has a " but " and it's ok with me but then please your perfect solution about, we need your contribution for all we can learn.

R.