thespeakerdude Just to be clear my OP was meant to mean in the best practice each driver should be designed for each amp and visa versa. If this isn't done the amp may be very expensive but it is shooting darts on matching the particular speaker most effectively. Think of the million dollar systems that aren't designed for each other that is willful confusion a picture of silliness. The amp doesn't have to be in the speaker cabinet but it does have to be designed for the speaker.
Vibration affecting the fidelity of active speakers with the amps inside the cabinet and those benefits are opposed to each other. That's all I'm saying.