Nottingham motor controler

Yes, do it.

I have a NA Mentor, much modified. Motor and WM are vintage 2014/12. I suggest that you get them both at the same time, and they will match the WM to the motor.

The upgrade made a significant difference in my system, at a very reasonable cost.

Inna, the most important mod was to the plinth. I used an aluminum / Baltic Birch plywood / aluminum sandwich, and further isolated the motor. Also went to an air bearing tonearm (big difference).

If I remember correctly, NA will match the WM to your motor. Of course, that means sending it to them and being without for a few weeks. But new motors are not expensive from NA - and with the cost of courier ... and then you don't have a new motor with new bearings ... and you don't have a spare motor ...

I have experienced no blown transistors or other problems. I also protect the WM with an isolation transformer.

John, the output from my WM is a 5-conductor connector. Therefore it is highly likely that the unit provides two split phases, which would allow phase angle adjustment inside the unit, thus matching WM to motor.