I don't think that battery power will help with your
speed calibration problem. Any speed control that does
not incorporate some type of feedback will be subject to
speed drift. I found that that with a high quality regulator
circuit it was difficult to keep the speed within +- 3% long
enough to play a record side. As the turntable and motor
warms up the speed will change slightly even if the
voltage remains constant. Fortunately our ears are not very
sensitive to this slow drift so the problem is not nearly as
bad as it might seem.
However, I do think that battery power will notably improve
the sound of your turntable.
Chris
speed calibration problem. Any speed control that does
not incorporate some type of feedback will be subject to
speed drift. I found that that with a high quality regulator
circuit it was difficult to keep the speed within +- 3% long
enough to play a record side. As the turntable and motor
warms up the speed will change slightly even if the
voltage remains constant. Fortunately our ears are not very
sensitive to this slow drift so the problem is not nearly as
bad as it might seem.
However, I do think that battery power will notably improve
the sound of your turntable.
Chris