Hi Dover – thx for the info. Please tell me there is not going to be a pop test quiz on that material.
More on resonances
My Verdier plinth – which holds the platter, armpod, spindle (no physical bearing) instead two large shielded magnets - is made of Granito.
Granito is a material composed by little pieces of marble of very different origin agglomerated inside a mold with cement. Machined and polished.
The resonance of the plinth with its suspension is about 5Hz and it is well absorbed by the air cavities.
The Granito and resonance info comes from Mr.Verdier himself to me in an email.
My SP10 unit (version 4) is bolted in by four - one inch solid stainless columns to an MDF plinth which in turn sits on a pneumatic suspension, which in turn is on a wall shelf (load bearing) The MDF base is a full TT system plinth as it holds all the goods. It supposedly resonates a little lower than slate. The armpod 19 lbs relies on its weight alone but my version 5 plans are to have it bolted in as well, and I am not sure what material the next plinth will be.
The Nantais L75 is an all wood layered plinth and I have convinced myself that if I take my boat to the middle of Lake Ontario and drop it over it will sink. It feels like cement when carried.
This has been said before – The ET2.5 spindle resonates at 2-3 Hz. The skinnier ET 2.0 spindle resonates at around 5-6 hz.
Resonances can be fun ?