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Turntable Power Source Benefits

Many of the table designs today have the motor separated from the platter and run the platter via a belt or string. I see some people are going to DC to power these motors and the Teres site claims them to be a real benefit. Walker makes a regulated power supply that others have said are helpful.

How are they helpful? I can understand how a steady power supply source can provide a more stable way to deliver constant and unvarying platter speed. But how can they improve the sound other than that if the motor is already separate from the platter? If you have the TT plugged into a separate outlet, how can any power-induced problems get into the sound chain? Do motor cycles jump from the motor to the cartridge?

Help!
motdathird

Showing 2 responses by twl

twl
3,251 posts
 
The motor is not separated from the platter. It is connected to the platter by the belt. Vibrations, and motor variations can be transmitted via the belt to the platter. Anything that will allow the motor to operate smoother, and with less vibration, will make the TT sound better. This includes any effective power conditioning, DC systems, etc.
twl
3,251 posts
 
Zaikesman, I'm glad you are getting a good boost in performance from that new power supply. It must be good, because you've mentioned it on about 3 threads now. I'm sure that it is helping out alot.

As you well know, a DC motor, like the 1200 has, is regulated by the voltage applied, and is adjusted in very small increments. If there was any ripple left in the power after is was converted to DC, then it is going to cause small variations in speed on a DC motor, because that ripple is a voltage variation. Many rectification/regulation circuits still pass a small amount of ripple, and call it DC. That is not conducive to good speed accuracy on a DC motor. You want a perfectly flat DC voltage, and apparently you are getting something like that from your new power supply.

Also reduction of vibration and hum fields from the disabling of the internal transformer are an added bonus, like you said earlier.
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