The rim drive VPI MUST have a perfectly circular platter because if there is an out
of roundness, the large side pushing up against the drive disc will push the
whole turntable away from the motor assembly, and as the platter turns will
release the pressure letting the turntable move toward the motor assembly.
There is a space between the turntable and motor assembly...if you lightly put
your finger in/on this space, you can feel the oscillation of the turntable/platter
moving toward, and away from the motors. This will cause the VPI arm which is
balanced on the head of a pin to rock back and forth....not good for the sound or
for the cartridge. If you must keep the Super Platter and its out of roundness,
you must stabilize the turntable by using very solid cones instead of the VPI feet
which permit movement. Also, you should use soft feet under the motor
assembly so that the motor can move out and in, not the turntable itself. I found
that the very solid cones (I use Bearpaws) make a much improved sound in the
turntable even though I use the VPI ceramic platter.
of roundness, the large side pushing up against the drive disc will push the
whole turntable away from the motor assembly, and as the platter turns will
release the pressure letting the turntable move toward the motor assembly.
There is a space between the turntable and motor assembly...if you lightly put
your finger in/on this space, you can feel the oscillation of the turntable/platter
moving toward, and away from the motors. This will cause the VPI arm which is
balanced on the head of a pin to rock back and forth....not good for the sound or
for the cartridge. If you must keep the Super Platter and its out of roundness,
you must stabilize the turntable by using very solid cones instead of the VPI feet
which permit movement. Also, you should use soft feet under the motor
assembly so that the motor can move out and in, not the turntable itself. I found
that the very solid cones (I use Bearpaws) make a much improved sound in the
turntable even though I use the VPI ceramic platter.