[52-6F-62]

I always understood ~20Hz to be relegated more for inaudible movie effects like you mentioned. Usually contributing to the feeling of dread, fear, and anxiety in horror movies, etc.

It’s news to me that one might need 20Hz for purely an audio track, especially in the home. I would understand at a concert or something but to demand it from a single small self-contained unit like that sounds like looking for love in all the wrong places.

[EADGBE]

Ah yes, the subwoofer rattling sound. Dreadful indeed. Can kinda take me out of it.

I wonder if the "undertone series" for a bass hits this, since a low E on a 4-string already is at the ~40hz range. Definitely something that's felt, more than heard, as you mention.