As it is, I have never yet reached an input power level near 60 watts...my baby amp "1% distortion" lights have never come on...and the SPL gets too loud even with 30dB muffs. Wife at the kitchen table 30 feet away remarked how clear/distortionless it sounded when running at 100dB :) At 110dB, I expected plaster to fall, but none did. I try keeping them hooked to the fisher tubes so my roof will stay up, but "horsepower" can be addictive...this weekend they are being "tickled" by a 200wpc sand amp so we can hear music in the back yard. Music AND sunshine for everyone! Sam