Hi,
drive, its all about drive. More pace, better and more stable image, better bass, less surface noise, etc.. AC ones need more complicated power supplies to keep noise down but have more inertia and torque, bass weight, speed is not affected by line voltage, have some cogging (if you have 3 phase motor and supply this is eliminated) and last forever.
DC ones still need a sophisticated supply for speed issues, are more quiet have a refined upper region, leaner bass, no cogging, but are affected by line voltage and do not last forever (brushless motors are better here).
Which is the winner, both have their own merits and depends on the TT’s construction and the quality of power supply. My understanding is that If a motor is mounted on the plinth a DC one would have more benefits, and if fitted externally an AC would be preferable. For me the stronger moter is best. Bear in mind that both motors can vibrate but in a different manner.
drive, its all about drive. More pace, better and more stable image, better bass, less surface noise, etc.. AC ones need more complicated power supplies to keep noise down but have more inertia and torque, bass weight, speed is not affected by line voltage, have some cogging (if you have 3 phase motor and supply this is eliminated) and last forever.
DC ones still need a sophisticated supply for speed issues, are more quiet have a refined upper region, leaner bass, no cogging, but are affected by line voltage and do not last forever (brushless motors are better here).
Which is the winner, both have their own merits and depends on the TT’s construction and the quality of power supply. My understanding is that If a motor is mounted on the plinth a DC one would have more benefits, and if fitted externally an AC would be preferable. For me the stronger moter is best. Bear in mind that both motors can vibrate but in a different manner.