John
It is true that un-used headroom is simply headroom that is un-used. The problem is how you know when you are at that point. Let’s say we are in a car and we pull out into the left lane to pass, as we are passing the car and we see a truck coming towards us, you realize you don't have the horsepower or torque to get passed the car you are passing in time, but now you are committed. Not a fun feeling and you are probably wishing you opted for the six cylinder version.
When or if you are pushing your audio system, how do you know if you are damaging your tweeter, until after it has been damaged? Then it's too late, damage done. Think of extra power as insurance, for that one time you (or someone else) went a little too far.
But as you said, if you never push it to that limit, you don't have to worry.
paul
