Amplifier power versus maximum speaker input power

Somut, RMS power delivered to speaker is very low (in order of few percent of peak power)*. Your speakers rated for 100W RMS should easily take many times higher peaks. Weak amplifier (without soft clipping) can easily damage tweeters because clipped (squared) signal contains a lot of high frequency energy (harmonics) normally not present in musical material.

*Half of the loudness is equal to 1/10 of the power, plus music has gaps. Peak power is more important than RMS power.

The drawback I had with high power amplifiers driving efficient speakers is that I couldn't bring my volume control much past 9:00 on the dial. This is not a good idea since most pre amps sound better if more of the volume dial is used.

Somut,
Given your stated listening levels,unless your room is huge and you sit far from the speakers, most times your amp is only putting out a 'few' watts of power.

The more power you can give to a speaker the better they will sound. As long as It's clean power with out clipping the amp. Clipping a amp will blow up any speaker no matter how good it is.

Markpao,

Your problem with the amount of travel on your volume control is related to the gain of your amp, not its power.

The importance of accounting for the amount of gain in systems is sadly often overlooked (damping factor is another aspect of amp-speaker matching that I wish I'd known about earlier on).