Matching speaker wattages to a 100 w 3 way crossover

[ckingjr]

Is there a rule of thumb or a formula to follow in selecting the speaker use wattage for each section in a 3 way crossover say that is 100 watts. How do they determine what wattage each speaker should be for the Low, mid, high in a 100 or 200 watt crossover?

 

[soundguruman]

At any given time, 60-80% of power goes to the low frequencies, the woofer.
20% or less will power the mid range and 5% or less will be the tweeter.