This is exactly what I thought would happen when tuning with an oscilloscope. I like the way my system sounds now (all music hits hard, no matter the genre), but I'm also afraid of clipping and damaging my subs..
I tuned my system by ear (I basically set my line driver to about 9v and the eq gain about 3/4 and turned the frequencies until I heard distortion), but that seems to be the foolish way to go about setting amp gains now-a-days (I miss the good ole days when I was an ignorant teen who just threw a system together and went on my way caring less about technicalities).
I'm either going to purchase an o-scope or go to a shop, but I'd be pretty bummed if afterward the music didn't hit as hard.. But at the same time, I can smell my subs after about 15-30 minutes of continuous play so I guess I have no choice..