Call me a saddo, I don't care.
I have a copy of London Grammar - If You Wait. The first track is known to many I guess, Hey Now.
It has a fabulous bass line on it, which comes through superbly on the set-up I have.
I was wondering what the lowest note actually was, so I measured it off the sub with my frequency counter
Turns out it was bottom C, or C1 if you prefer, that's 32.7Hz, wow !