I had planned to build a DIY 'Armaggedon' but when I scored the Valhalla I figured I might as well use it.
The success of this project has got me thinking that an improvement in sonic performance could be achieved on many turntables that use a similar 110 volt synchronous motor.
While a good deal of the improvement must come from the 'cleaned up' AC supply, some must come from simply dropping the voltage down to 85 volts which reduces the motor cogging effect resulting in steady platter rotation.
A simple mod could involve nothing more than fitting a dropping resistor into the motor supply circuit.
Makes you wonder how many turntables could be measurably upgraded with a 20 cent resistor and a bit of soldering !!!!
I might try this on my almost finished Logic DM101 rebuild.
Any suggestions as to the value of the resistor to use ?