Nude Turntable Project

Does a tt need a massive heavy platter to reproduce extreme low bass?

This seems to be an interim conclusion by respected reviewers like Michael Fremer and Jonathan Valin but they obviously haven’t heard the TT-101?
The Victor can go deeper than the Raven AC-2 (depending on cartridge in use)……but more importantly…the bass can sound more natural, better controlled with less overhang and more definition.
Perhaps the physics is different with belt-drive decks….but the short answer to Lewm’s question is…….not in my experience. :-)

Halcro,
there came out so many Micro Seiki CU180 metal plates out of China in the last years MS couldn't have produced in the golden (!) times of Japanese turntable building...

Halcro copper will do nothing with EMI on for RFI

Lawrence

Halcro, I would not expect copper per se to do much to absorb or block a magnetic field, except by virtue of its thickness which would just physically space the LP and the cartridge that much further away from the source. I am glad to hear your report on the comparison between the TT101 and the Raven. There are many in the audio community who say otherwise, and I never could figure out a scientific basis for their claim, that you need a very massy platter to have good bass reproduction. It seems to me that a combination of torque and well done speed control would be as good. If you will recall, Dertonearm once wrote here that at minimum, a platter MUST weigh 35 lbs for good bass.

Lharasim. Are you certain that copper is not an effective EMI shield? TI Shield, which is a documented effective EMI shield, is composed of three layers: copper/permalloy/copper. True, it does not work unless the copper surface is grounded. Perhaps it is the permalloy layer that does the work. I don't actually know.

I just went to the URL provided by Aigenga. The photos show exactly what I did, as well, to create an EMI shield for my L07D. However, I never heard any "wum-wum" when the brake activated, either before or after shielding was installed. That site is the one hosted by Howard Stearn, who is an orthopedist by day and an L07D Lover by night.