I recently found i had issues with the black centre adaptors same shape as illustrated above in yellow, all the ones i have are a larger hole than 1/4 inch and cause wow on my long spindle record player.
The tri-shaped spider cenre adaptors have almost exactly 1/4 inch centre hole and have no wow issus when used, i am in the process of changing the larger ones for these at the present time, but wonder if the American/Aussie style "blob" ones are any better..?
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