That Dark Knight Why so Serious was deadly, though i was using JVC Sz1k and also tried on my xb1k. Didn't really rattle on the 880, but i could definitely hear the notes on them.
I disagree about the car audio bit because SQ setups are very much possible. I've had at least 50+ different setups in 15 vehicles, and in some they can sound like garbage. When i did detailing i heard many of the SQ systems in the exotics and they are super clean. In a nice SUV, with sound deadening, good components you feel all the low subbass notes and hear the mid bass notes. The bass from high quality 18's and 15's in a car is otherworldy bass, much like that in theatres. Headphone bass is nice, but like come on now
the lowest 18s are probably pyle 18s and yeah they flutter like water waves. I think it was called blue wave lol.
Those amps make good paper weight!