You really can't "underpower" a speaker. If you don't have enough power, they just won't get as loud as you like. But always, the less power you feed your speakers the BETTER they will sound.
I'm also not sure where you got those power rating numbers. "Nominal" power for most tweets is about 5 watts. Maybe 20-30 watts for a mid/bass. 50 watts continuous power over a tweeter is a phenomenal amount of power. I couldn't even imagine how loud that'd be much less that it could sound good or that you wouldn't damage the tweeter over the long term.
I'm also not sure where you got those power rating numbers. "Nominal" power for most tweets is about 5 watts. Maybe 20-30 watts for a mid/bass. 50 watts continuous power over a tweeter is a phenomenal amount of power. I couldn't even imagine how loud that'd be much less that it could sound good or that you wouldn't damage the tweeter over the long term.
