All the "speed control" fanatics are completely missing the point and the REAL issue. Speed control is NOT the issue. It is VOLTAGE control. At wall voltages, the motor will generate pulses that are carried to the table through the belt (or drive). Reducing the voltage will reduce the magnitude of the pulses and fix the noise issue. THAT is the reason to get one of these units. A variostat will do the job at a fraction of the price of a "speed control." Start the table at full voltage then reduce to 70 volts or so when it's time to drop the needle.
