Bose's are inefficient...ya gotta have power to drive them. If the Onkyo is rated at 80 (and some over exagerate), that's probably 40w per channel....pretty low for SS systems....and will clip like a barber if you push them at high volumes. The only "still alive" Carver I have is 425w in stereo, or 1000w bridged mono....but that's to drive 170lb Polk towers with a dozen drivers in each.
You want clean power that can drive them effortlessly ....it's not just about loud....that's just a bonus
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A 17w tube system is totally different btw....and they rock too
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I used to have a "house of sound"....not just a wall....
What
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