What do you do about a belt-drive turntable that's spinning at the wrong speed? Is there a knob to turn? Sadly, no. Whereas direct-drive turntables generally have adjustable speeds, belt drives are at the mercy of the motor spindle, the platter, and the belt because the motor speed is dependent on the 60 Hz (or 50 Hz) frequency of AC power. This video shows how to diagnose and solve the problem.