Coming at this issue with my speaker designer hat on, in my opinion it is possible for a speaker to be either overdamped or underdamped by an amplifier. Most speakers today are designed with high damping factor solid state amps in mind, but then those speakers may be underdamped (too much bass) when driven by a low damping factor specialty tube amp. On the other hand, a speaker designed to work well with a low damping factor specialty tube amp may be overdamped (not enough bass) when driven by a solid state amp.
Blame for a mismatch (resulting in too much or too little bass) is often incorrectly attributed to the amp or to the speakers, when really it's a component compatibility issue.
To zero in on your second question, a higher damping factor is not always a good thing - it depends on the speakers. My speakers can be tuned for either type of amplifier, but in my opinion they perform best with a low damping factor amplifier.
Duke
dealer/manufacturer
Blame for a mismatch (resulting in too much or too little bass) is often incorrectly attributed to the amp or to the speakers, when really it's a component compatibility issue.
To zero in on your second question, a higher damping factor is not always a good thing - it depends on the speakers. My speakers can be tuned for either type of amplifier, but in my opinion they perform best with a low damping factor amplifier.
Duke
dealer/manufacturer