SDS question


Hello friends,
I was checking my turntable speed today using my KAB speed strobe and found that my table was running quite slow. I had the VPI SDS calibrated at 59.85hz and I thought I had the speed perfect. Today, I needed to adjust it to 60.03hz to get it dead accurate again.
What might cause such a big change to have to be made? I was wondering if it might be the weather (it has turned cold recently here in Chicago)?
Any thoughts would be appreciated.
Thanks.
tfkaudio

Showing 1 response by starcon

are you plugging the sds into the wall or a power conditioner? House power can vary +/- 10 volts at times. I realize the sds is suppose to handle that but I find using my PS audio 300 power plant eliminates this prolem