Idler driven turntables from Rek O Kut, Garrard, Presto, Bogen/Lenco, Neat and...
...viscous damped tone arms equipped with variable reluctance cartridges from GE > Tannoy.
Altec 802 + 416 drivers converted to field coil powered by a 12VDC power supply.
Jensen M10 field coil was featured in the 2009 November Hi-Fi Show.
another project....but just as significant ;)