@mijostyn, Mike you clearly know VERY little about the Linn LP12 turntable. The more you post, the more you show your ignorance.
Firstly, the sub chassis has been re-worked over the years to address resonances...the current model utilizes a very damped and specific design that is not only highly rigid, but also non-resonant....which again IF you knew anything is called the ’Keel’. Even the entry level model has a new design that addresses rigidity ( Magik)...and is engineered differently than the original design..which was over forty years back!!
The platter does not ring, why because it is mated to a sub-platter..!
The current plinth ( well current in your terms, although it has been available for a paltry twenty years!) is corner braced...as such there are no issues with warpage...even in climes like sweaty Florida, LOL.
BTW, mine is a non-corner braced plinth...and it looks like the day I bought it ( over thirty five years ago!!) ( True, I don’t live underwater in a sweaty clime)
The current ( again modded...oh- thirty years ago and again ten years ago) arm board is either a multi layer wood/plastic base( on the entry level table), or is now one piece with the sub chassis and therefore made of metal!! ( Kore or Keel). None of this you know, since your last exposure to the table was what....25+years back!! Doesn’t stop you from continuing to post your drivel though...
One thing you are correct about, the table from your long bygone era has been corrected....and it is a VERY different sounding table. None of this you would know, as you prefer to stick with your blinkered opinion.