Thanks for the lead. I guess I should ask the source. I felt a little guilty asking as I am not using a MH TT.
I had to call Roy recently about a hum from my old Music Hall 5 when I hooked a Cruise Control 2 up to it. He told me they weren't compatable so I had to return the Cruise Control.

The Cruise Control will handle a 120 volt AC synchronous motor or a 16 volt AC synchronous motor via 2 separate circuits. The MMF-5 plugs into the wall directly so runs from 120 volts AC. Either it's not synchronous or there is something else circuitry wise that gets in the way, so the Cruise Control can't control the MMF-5 or the 24 volt Rega.
Can't you just plug the rega 120v power supply into the back of the cruise control?
No, I'm pretty sure that won't work at all. You are not then connecting the Rega motor directly in that case but going through an additional transformer, that is the Rega power adaptor. .
I have read of it working with a P3-24. So it should. We will find out on Thursday when it gets here. If not, I'll have one for sale.
I have not tried this, but wrapping tape around the subplatter would increase the diameter and therefore slow it down. Maybe lead foil tape.I guess we will never know. The used Cruise Control I received, smells so bad of burnt electronics, I wont even hook it up. Yay eBay.
Guess I'll be considering other options to slow down my Rega. Maybe the Phoenix Engineering Falcon PSU.
I have read of it working with a P3-24. So it should. We will find out on Thursday when it gets here. If not, I'll have one for sale.