Wayne Parham Messages: 18786 Registered: January 2001
Illuminati (33rd Degree)
All speakers are ultimately passive devices, being a linear motor attached to a diaphragm. They are all driven by an amplifier of some sort.
I wouldn't run subs with tube amps even if my mains were run on tube amps. However, one of my personal systems uses SET amps for the mains and single-ended FET amps on the subs. I find that a good synergy.