['LIVEWIRE?']

Never come across the RC65A, but it looks a good one for it's time. Was it one of the first changers with auto size detection? Don't know if you're serious abot slowing it down to play LPs (probably not!), but if it has an AC Shaded pole motor, other than running it from a lower voltage (which might not work) I can't think of a straightforward way to do that. Just to finish on a pedantic note, Doris Day (and other U.S. Artistes whose records were issued here by Philips) actually recorded for American Columbia, which, prior to the Philips record label starting up, was issued on the Columbia label in the UK.