Quote Originally Posted by Ammonite Acoustics View Post
Looks interesting and stylish, and priced in the same area as Martin Bastin's PSUs. I use a Martin Bastin PSU with my Thorens TD-124, but I don't think it's wise to do speed selection entirely electronically like this, since you're then asking the motor to run across a very wide speed range; and it probably won't like that. Furthermore, I've found that these old shaded pole motors do seem to work best when a mere touch of eddy brake is applied (Martin Bastin did tell me why this is a good thing, but I discovered the fact by listening). I also discovered that idlers can easily lose their sonic 'drive' if the supply voltage is lowered too much, so in practice it seems to be better to set voltage relatively high at 220-240v, apply a touch of eddy braking, and then tweak the supply frequency to get correct rotational speed.
Hi Hugo,

I suppose the appliance in question can work like you describe, as it can do fixed or variable voltage up to 240v, then use the eddy brake and tune with the adjustable frequency pot - at least that was my plan.

I´ve sent over a deposit for one, so let´s see what it can do once I get around to actually acquiring one.