P5 in Multiwave with Walker Motor Controller


#1

I have a Walker Motor Controller that drives my VPI Classic 4 turntable. With the Controller hooked up to my P5 in sine wave mode, my measured turntable platter speed wow and flutter is an average of ± 13%, as measured by the RPM app on my iPhone. Without the P5, with the Controller hooked up to the wall, I’m getting about ± 17%, so clearly the P5 is helping. But does anyone know if it’s ok to use Multiwave, because when I activate it, I noticed a slight increase in transformer hum coming from the Controller’s chassis. The speed stability seems unaffected. I’ve submitted the same question at the Walker Audio site.

Does Multiwave ever pose a problem in general? Does it make downstream equipment work harder, even with sonic benefits?

Thanks,
Peter


#2

My recollection from past recommendations is to not use multi-wave with motors. Motors generally (?) need a steady 60 Hz waveform to operate correctly. Multiwave confuses the motor with multiple waveforms.


#3

But with the Walker Controller in between, which itself regenerates the sine wave, I wouldn’t think that would be an issue,


#4

Hmmm, probably right about that. However, not knowing how they “regenerate” the sine wave it could still be an issue. Kind of surprised no one else has posited a theory.