I agree, for Classic Rock there is none better than
Into the Fire: Harry Nilsson on Nilsson Scmilsson (1971)
Great song, drum solo around 4:00 and teeth rattleing bass at 4:45
Dubstep tracks have a lot of sub-bass, the genre usually have different levels of bass.
For the classical listener:
Schubert's 8th (Unfinished) Symphony has lots of soft, bottom-register playing by the double basses. You need cans with good bass extension to pull it off well.
The super low 7hz note in this song is audible on my modded T50rp, well maybe not audible, but I can definitely feel the pressure when it hits.
Maybe it's your source? Maybe your source drops the bass off below 20hz. My source was a youtube video on my laptop usb out to my E17. I definitely felt the presence of the low note. I remember the song from back in my car audio days.