I had an email recently which was selling speaker training and it was entitled "Are you a speaker?"
Well we all are, aren't we?
The people I listen to, really listen to, are fully blown High Fidelity systems, They take the data we all have access to (The CD, LP, Tape etc) and put it through their filters, and amplify the right bit, and diminish and hide the white noise, making the data into an experience and creating a real and emotional response.
A speaker on its own isn't a lot of good.