SP10 Mk II vs Mk III

The Kaneta plinth addresses this issue but taking the motor out of the chassis and place it in the same wood block where the tonearm is mounted.

http://de.geocities.com/bc1a69/kaneta_eng.html

Hiho, Have you ever actually seen the Kaneta modifications applied to an SP10, other than the one in those photos? That URL is frequently cited, but there is no hint anywhere else on the internet that I can find to indicate that help (i.e., kits or assembled PS units) in obtaining the Kaneta outboard supply or the custom plinth are really available. I would be interested to read your response or that of anyone else who has been up close to a Kaneta-modded SP10. The schematic is posted, but it looks quite formidable as a DIY project. (I am quite at home reading schematics and building tube gear but have limited experience with ss devices, particularly ICs.)

Albert,
You raised the issue of the tube power supply - I think it would be not be a wise move, as low voltage - high current power supplies and tubes do not combine.
Using a battery super power supply could be very interesting, but however one should be aware of an interesting feature of this power supply: if by any reason the +5V power supply fails, the +32.5V shuts down immediately, protecting the motor coils.

Microstrip, Interesting reading.

I don't know how serious I am about building a tube supply for Technics. I'm just a fan of what tubes do, especially in power supplies.

Considering cost of the MK2 it's probably not a wise choice. If the supply cost anything near my custom tube crossover ($3500.00), for a bit more money you could do the MK3.

Guys!

I have to be honest and say that a tube-based power supply for a turntable such as a SP-10 mkII or III will not be worth the effort at all. The incoming DC power from the PSU is regulated and modulated in a complex manner that will void any "tube-iness". The SP-10 motors are precision devices that operates in a different way than amplifiers. One should not treat it electrically as a piece of audio gear but rather a precision instrument. As long as the stock PSU are operating within specs then it will be the best partner for the motor unit.

Anyway, the stock PSU is much more better designed and constructed than most other audio related PSUs. If only half the worlds audiophile amplifier PSUs were so well designed and regulated then this would have been a much more sane place. This is why I am working on a SE tube amp with a super-regulated PSU. Its not over-kill, it just makes sense.