Direct Drive vs. Idler Drive vs. Belt drive

Bob, how could the changes you describe have affected bearing noise?

alexberger,

unfortunately I have no experience with EMT DD drives.
the Airforce tables are well designed, they do not have an airbearing concept like Caeles or the Apolyt.

best
E.

@thuchan

they do not have an airbearing concept like Caeles or the Apolyt.

i assume when you say 'Airforce tables' you are referring to TechDAS.

are you saying that the TechDAS Airforce tables do not have air bearings? or that their approach/concept to air bearings is different than the Caeles and Apolyt?

since clearly the Airforce tt’s have air bearings.

if it’s a different approach to an air bearing, please explain how it’s different. thank you.

The problem with Direct Drives is a big oscillating magnetic device directly under a very sensitive magnetic device.

@mijostyn   What is the result of this? We've been making and playing belt drive machines for about 20 years but when playing the Technics machines I don't hear anything in the way of noise floor that would suggest this is an issue.

Alexberger" "After Lenco I use EMT 948.
It is a number of levels over Lenco and Nottingham Specced."

You surprise me, Alex.  A legendary TT, costing 10x as much (used), beats entry level from Nottingham. Who would have thought it possible?