The turntable was put together when I was building the tonearms, being a physicist I don't go too deep down the rabbit hole of high end audio, but if there are actual principles involved, then there is work to be done. Basically, the Kenwood KD-500 spins records at a constant speed, has a flat...
One of my present restoration projects is astronomical, a 1916 telescope built by Warner an Swasey, it's much larger than a tonearm, but has a lot of bronze parts. I do expect to get my air bearing tonearm up and running soon on my modded Kenwood KD-500, about 70lb of lead and damping material...
Dennesen ABLT-1 serial number 1
Before it was licensed to Dennesen, it doesn't look as good without the gold plating, but it sounds the same. These first generation were simpler, but had the key features including adjustable VTA (while playing, of course). I remember showing it around Boston...