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MAT - platter material, thickness/ resonant frequency - thoughts please

I've read quite a few posts and threads and am getting a little bit overwhelmed  frankly. What I do not really see is any clear discussion/experience factoring in the difference of say:

1. the drive method - DD goes at the speed ie 33.3 - 45; belt 300rpm; rim (higher still but not sure)

2. platter material - Steel, Aluminium, Delrin all have different resonant frequencies

3. Suspension type - sprung vs rigid vs air vs sorbothane

4. platter thickness

I have been trying to get an OL2k mat for my SONY TTS 8000 (to no avail) for instance as I read in a HiFi News article by Tim Jarman that one can try other mats but the OL2K is the best overall. 

As such logic clearly means that some mats work with some decks better - and as such i can imagine they are rubbish on another deck hence some experiences would be akin to having a salmon and banana sandwich which are not destined to work together.

I am throwing this out for some distilled advice and experience upon the following decks:

1. MAt for Sony TTS 8000

2. Mat for JVC TT101

3. mat for acrylic platter (Amazon Model One) (just experimenting)

I have a few candidates:

a. Ringmat

b. Tenuto

c. Boston

d. pigskin (cut to size)

thanks in advance

 

lohanimal

Showing 2 responses by lohanimal

lohanimal OP
659 posts
 

Dear all

 

Can I just say thanks for the intelligent discussion thus far - it’s what I was hoping for 🙏.

 

@mattmiller i had always thought bareback with Acrylic platters - both of which you have - however - RDC clear light uses a cork mat and the reson rota often used a Ringmat.

 

@atmasphere thats very much what I was hoping to explore here - with Acrylic I am thinking one type will interface better than another when compared to a stainless steel platter for instance. As it happens both Jvc and Sony’s platters are damped under the platter

 

@pindac i am confused with ur post. What mat combo worked for you? Are you saying. Also what are the known design concerns on the Sony? Are you suggesting not to bother? Thanks

lohanimal OP
659 posts
 

hi @atmasphere  - that makes logical sense. A material that has a resonant frequency between the Vinyl and the Acrylic should theoretically channel it away into the Acrylic.

I am puzzled how the heavy metal mats purportedly work. I read the SEAC article posted in another thread.

 

 

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