2. analog
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Any thoughts on a solid hickory platform under my tt

I have access to some beautiful 2" thick hickory butcher block instead of maple any thoughts on vibration control vs maple 
128x128oleschool
geoffkait's avatar
geoffkait
23,365 posts
 
Ole school wrote,

"At some point isn’t the vibration going to travel onto the cantilever or arm just through the air?"

excellent question. The acoustic waves traveling through the air don’t matter because speakers, even with big subwoofers usually cannot generate frequencies low enough to excite the cartridge or the tonearm, which are generally designed with resonant frequencies circa 10-12 Hz. Whereas seismic type vibrations with very low frequencies, including 10-12 Hz, can easily excite the cartridge and tonearm.

mmakshak
589 posts
 
Without much experimentation(some, though), I liked Mapleshade's maple over butcher block(3 inchs each, and big brass footers-used on the floor) for my amp.  I also thought the 2-inch Mapleshade maple board, with their rubber, cork, rubber footers, came close enough to my Mana table, that I don't think it's totally worth the extra money for the Mana.  This was with an Ariston RD110 turntable.
oleschool's avatar
oleschool OP
722 posts
 
interesting ,geo 
thanks for the information,i am humbled by the level of knowledge around here.
wspohn's avatar
wspohn
579 posts
 
Green wood does damp but still rings.  Dry it out ad it gets worse.

You want something that doesn't ring and that has mass to block vibration coming up from below.

I use 2" thick slabs of Brazilian granite - I used to use a large cement paving stone but was redoing the kitchen and had to buy a slab, and there was extra, so - a nice polished slab for both systems. Works very well mass loading and damping, just don't set it on a resonant base.
bdp24's avatar
bdp24
9,478 posts
 

The anti-high mass proponents will tell you that those designs don't "block vibrations", they just move them to a different frequency (lower) and transmit them longer---in other words, ring longer at a lower frequency for a longer length of time. That's why that crowd in England (all through the 80's and 90's) advanced the notion of very low mass, very stiff supports for turntables, such as Torlyte.

Max Townshend (and Audiogon's own Geoffkait---see above) will tell you that what's needed is a high-pass mechanical filter with as low a resonant frequency as possible. Do yourself a favor and watch the couple of videos on You Tube of Max demonstrating the effects of his Seismic Pod. It's an eye opener!

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