Re: subs playing over 100hz
a simple answer would be, you can move a lot more than arm hairs with a 40 hertz tone in a high powered setup. As long as you have everything blending in together smoothly with no distortion and your happy then forget what people say. I like the high hertz response too, back then i had a lot of it when running two JL W0s in my teen years, thought it sounded amazing but never quite loud enough for me.
Seems like you can only get this type of sound response mostly from entry level low powered subwoofers and if you wanted it louder, you'd have to run multiple.
That being said, I prefer my current setup a lot more than any other setups i've previously had, just need to add some 8 inch mids to my doors.
Clip city b1tch, clip clip city b1tch. 10's, 12's, 15's, goin up in flames b1tch.
Subs : SSA Zcon 12 in a 3.25 cube tuned to 33
Sub amp: hifonics brx 2400.1D
Mids/Highs: PPI ION 520.4 - bought from trumpet
Headunit: Pioneer 80PRS
Front stage: Phd FB 6.1 6.5 mids with jbl ms-62c tweets and crossovers on 130 rms each.
singler 180 amp alt with kinetik hc1800 under the hood and 2 hc 2400 in the trunk.