k40air

thanks for the reply first of all what is DB? secondly the RB-81 will 120 Watts from the reciver be enough, is there need for a pre amp

I recently purchased the RB-81 bookshelf speakers, which are rated at (150W RMS / 600W Peak) After installing them I have been told that i am not sending them ample power. I matched them with the Yamaha HTR-6090 that does (120W x 7). Is this true that my speakers RMS power should be less than my recievers output? I am considering going to a smaller speaker if this is the fact. The problem is I don't want to invest more in a larger amplifier. And the matching pair for the RB-61 center channel the RC-52 has a rating of (125W RMS / 500W Peak). Am I getting two involved with the wattage from the reciever to the RMS power of the speaker. I don't want to hurt the reciever. Thanks