Speed of groove.


We all know that record spins at (let's take at this point) 33.5 rpm and while the rotational speed is the same the speed of the actual groove is not.
Our cartridges are specked at output voltage for a specific speed of the grove(cm/c). What happens when
a)the speed is higher than specified at outer grooves
b)the speed is lower than specified at inner grooves
c)the record spins at 45rpm or 78rpm
128x128marakanetz

Showing 1 response by uru975

Speaking as an SME owner, their power supply is supposed to lock on to speed, 33 1/3, 45 or 78 and hold that steady regardless as to cartridge drag. Whether that happens or not, I've never bothered testing. But any power supply that is set up to lock onto a given speed should be able to account for the effect of the stylus in the groove. Or so I would hope.