Archie
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Lon,
I've been following your mods with interest and I can imagine that they have all made good improvements in your sound (except maybe the arm weights -- I don't understand how this one would work). It spurred me to delve deeper into my TT and I came up with a HUGE improve for almost nothing. My TT is a fully KAB modified Technics 1200 MkII (which are DD, BTW). What I did was to get rid of the stock feet -- that I thought were very good -- and put the table on a home-made isolation platform. It is the same design that I've been using for my speakers and amps. It essentially isolates from induced vibrations in the audible range. As an indication of the isolation that I now have, I can pound with both fists on the support and I don't hear a thing through the speakers -- while music plays.
Well, despite my less than audiophile hearing, I can easily hear deeper bass, greater clarity and more separation of instruments within the sound stage. This is by far the most impressive improvement to the sound that I've made -- including going to a high dollar MC cart!
I think that true isolation for a TT will trump compliant-damping types of footers since even those will have some frequency transference. Given that vinyl playback is all vibration based, it makes sense that eliminating all other vibration would help the sound. Better bearings, deader platters, table isolation, etc, all work to that end.
I keep being amazed that there is still more to hear from the same recordings.
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