First, SOTA, the company that makes turntables, hooked up with Bill Carlin, the person who owned and designed the Phoenix Engineering gear, and SOTA now markets the Phoenix stuff under the "Eclipse" name. This includes an AC power supply like the Phoenix Eagle, and a tachometer, like the Phoenix Roadrunner, that feeds back to the PS and holds speed at a solid 33.33. You can even buy an AC synchronous motor in order to convert a belt-drive that may not have an AC motor, for use with the Eclipse motor controller equipment (because the Phoenix and therefore the Eclipse equipment is designed to drive an AC synch motor). But that is not necessary for a Lenco, because the Lenco motor works with the Phoenix/Eclipse stuff as is. Maybe I wasn't crystal clear in my first post.
Second, if you do acquire the Eclipse equipment, there is no need, and in fact it would be a bad idea, to use some other device in order to drop the voltage. You would let the Eclipse equipment do the job. Dropping the voltage also is a two-edged sword; at some point you lose torque that way. Furthermore, just dropping the voltage per se does little or nothing to improve speed constancy.
Second, if you do acquire the Eclipse equipment, there is no need, and in fact it would be a bad idea, to use some other device in order to drop the voltage. You would let the Eclipse equipment do the job. Dropping the voltage also is a two-edged sword; at some point you lose torque that way. Furthermore, just dropping the voltage per se does little or nothing to improve speed constancy.