Dear @drastic : """
on rare occasions and only with a "hot" recording of piano, I'll hear breakup in the left channel, """
Maybe the hardest high recorded velocity LP grooves to track ( other that the Telarc 1812 bass range. ) are above mid range ( usually well above that. ) frequency range and especially on high velocities in a piano recording.
You own a great audio system and I'm sure that the TT/cartridge/tonearm is just on target as is its relationsship in between.
My experiences on similar phenomenon with diferent cartridges comes because a mistracking ( not set up. ). This " mistracking " could comes from a not very good cartridge/tonearm match ( that with you seems to me is ok in this regards. ) or because those recorded high veloties are over the self cartridge abilities and in this case there is nothing to do about other than test same tracks with a diferent tonearm.
All cartridges has tracking abilities limits and maybe that's what's happening in your Atlas sample.
Now, with those high velocity recording LP grooves is a must that the cartridge stylus tip not only stay in good shape but absolutely in clean/pristine condition and obviously that the cartridge suspension been in optimal operation conditions.
You said: "" on rare occasions "" , question here can be: always with the same piano LP tracks?
Regards and enjoy the music,
R.
Maybe the hardest high recorded velocity LP grooves to track ( other that the Telarc 1812 bass range. ) are above mid range ( usually well above that. ) frequency range and especially on high velocities in a piano recording.
You own a great audio system and I'm sure that the TT/cartridge/tonearm is just on target as is its relationsship in between.
My experiences on similar phenomenon with diferent cartridges comes because a mistracking ( not set up. ). This " mistracking " could comes from a not very good cartridge/tonearm match ( that with you seems to me is ok in this regards. ) or because those recorded high veloties are over the self cartridge abilities and in this case there is nothing to do about other than test same tracks with a diferent tonearm.
All cartridges has tracking abilities limits and maybe that's what's happening in your Atlas sample.
Now, with those high velocity recording LP grooves is a must that the cartridge stylus tip not only stay in good shape but absolutely in clean/pristine condition and obviously that the cartridge suspension been in optimal operation conditions.
You said: "" on rare occasions "" , question here can be: always with the same piano LP tracks?
Regards and enjoy the music,
R.