Well human hearing is not equally sensitive across the entire frequency range.
The frequencies that human hearing is most sensitive to correspond nicely with the frequencies that I tend to EQ away. I like bass.
The other side of the coin though, is that I'm operating in a bedroom that is approx 10' x 12'. Obviously the speakers aren't having to work as hard as they would if they were in a big living room with tall ceilings or something. 4 JBL 12" woofers (6 now!) have never really had much problems filling my tiny room with bass.
The 4412 speakers are lovely. Not so much as even a minor dent in any of the dust caps. No grills however. With speakers this beautiful, I can live without grills
I'm going to get them on their sides once I make a spacer to even out the height between my L150s and my L100ts, to give them an even-level surface to sit on their sides.