Rega RP8 - Manual (Page 6)

5
MOTOR
The motor is a high specification, 24V twin phase synchronous unit which has a board
mounted anti vibration circuit hand tuned to each motor. It is controlled by Rega's
unique and innovative TTPSU power supply. The motor drives the CNC machined pulley,
sub platter and hub-bearing assembly via the twin belt drive.
TTPSU - POWER SUPPLY
Your RP8 turntable motor is hand tuned and matched to the supplied TTPSU, this
ensures the maximum reduction of motor noise and vibration is achieved.
The compact TTPSU itself uses a high stability crystal locked low distortion sine wave
generator. This, along with an efficient drive amplifier fed from a stabilised DC power
supply, generates a 24V AC balanced signal of less than 0.1% distortion, which is
completely un-affected by any changes in the mains/line voltage and conditions. This
then drives the improved Rega anti-vibration circuit, which is situated beneath the
turntable.
The speed change is achieved by changing the frequency of the drive voltage; this is
because the speed of the platter and motor is directly proportional to the motor drive
frequency. A relay changes the required phase compensation & the anti vibration
circuit which eradicates motor vibration to a minimum at both speeds.