Thanks Kano. Is 150 maximum input power the same as RMS? May I send 150 W to my speakers continuosly, for long periods of time? I use them with sony STR-DE597.What do you mean by ''read not sony''? I am glad I finally met the right person.
Well that was too generic, the stupidly expensive Sonys could overpower the speakers but not that one. A $200 receiver will not put out anything close to 100W. In audio 100W is the magic number that all companies market their receivers around. Here is the power specs for your receiver :
Channel Power Rating: 100 Watts Per Channel x 6 (8 ohms 1 kHz, THD 0.7%)
The power is measured channel by channel using a 1000 Hz test tone. An accurate power rating using a test tone covering all frequencies from 20Hz to 20,000Hz. Your receiver will never come close to giving out 125W RMS to the speakers, so as long as the receiver isn't clipping you have no worries about overpowering the speakers.
But don't stress about the receiver not being a true 100W per channel. While the consumer expects this they surely do not normally need that much power, so let your ears judge if it's loud enough and you're happy with your purchase.