There are two kinds of damping used in tone arms. One is damping of the arm tube- in this case its impossible to overdamp it, except that there might be the issue of adding too much mass to the arm!
The other is to damp the **motion** of the arm. This is done with a damping trough or similar. In this case there is no question that the arm can be overdamped!
I'm just putting this out there in case there is confusion about what is meant by 'overdamping'. We need to be talking about the same things!
I like the Triplanar because its arm tube is well damped; independently of that it has a damping trough in case you want to damp its motion.
The other is to damp the **motion** of the arm. This is done with a damping trough or similar. In this case there is no question that the arm can be overdamped!
I'm just putting this out there in case there is confusion about what is meant by 'overdamping'. We need to be talking about the same things!
I like the Triplanar because its arm tube is well damped; independently of that it has a damping trough in case you want to damp its motion.