Thanks for the input. I checked with Sumiko and they said that using the Pro-ject Puck should not pose any problems, either with the motor or the bearing. Interesting since the puck is almost a 50% increase in the weight of the platter.
I've done some experimenting: I set up a mock weight on the turntable of about the same weight as the Pro-ject Puck and noticed no slow start or belt slippage. I compared the sound of this arrangement to the lightweight Pro-ject screw clamp, and also to nothing on the spindle at all. The screw clamp gave the overall best result in terms of clarity, bass and imaging. A bare spindle gave the weakest results and the mock weight of about 850g was a strong improvement over the bare spindle but lost out to the clamp.
I thought I might get some improvement of speed stability with the 850g weight(a 42% increase in platter mass), but that wasn't the case.
So now, I'm curious about lighter puck weights, in the region of 200-400g. I'll investigate further.
I've done some experimenting: I set up a mock weight on the turntable of about the same weight as the Pro-ject Puck and noticed no slow start or belt slippage. I compared the sound of this arrangement to the lightweight Pro-ject screw clamp, and also to nothing on the spindle at all. The screw clamp gave the overall best result in terms of clarity, bass and imaging. A bare spindle gave the weakest results and the mock weight of about 850g was a strong improvement over the bare spindle but lost out to the clamp.
I thought I might get some improvement of speed stability with the 850g weight(a 42% increase in platter mass), but that wasn't the case.
So now, I'm curious about lighter puck weights, in the region of 200-400g. I'll investigate further.