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Plinth mass vs. Foundation mass

In pursuing my analog education, I perused an old thread
on here, a long thread, about Panzerholz plinths.

This thread, along with numerous others, got me to
formulate the following question:

In the general attempt to isolate the platter & cartridge
from vibrations in the rest of the universe, where is the
added mass more/most effective, in the plinth or in the
mounting base ?

I suppose a 100-lb wood plinth sitting upon a 500-lb stone
table would be fairly effective. But what might be a more
"compact" solution ? Is it too subjective to ask where
is the point of diminishing returns ?

Thank you in advance for insights & ruminations.
noslepums

Showing 1 response by noslepums

noslepums OP
22 posts
 
Thank you, gentlemen.

My listening room has a suspended joist floor (crawl space,
floor about 30" above the dirt). Turntable will go near
an outer wall, next to the concrete foundation.

Table is an SP-10 with original obsidian plinth. SME-V arm,
but I haven't mounted the arm yet. Old Clearaudio Accurate
cart.

I had thought to put the turntable on a rather heavy little
table of some sort, on the rug, on the floor. I could
easily try some sort of soft pad/coupling between the
turntable and the table. This would be my starting point.

Another thought that came into my head is that, since the
TT is not set up yet, I could sell the whole obsidian
plinth setup and buy something even bigger and heavier,
something that would also accomodate the SME V-12 12" arm.

I guess I've been bitten by this damn bug.
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