Hi, I live in an apartment block and the wall between me and another neighbour seems to vibrate, also across my floor and up through my bed.
My neighbour is considerate, no loud music, but he said he does use a subwoofer but didn't think it would be that. The vibration feels like a 'whirring', as if something 'starts up' and 'spins.' These are all just feelings, I can't hear anything. Once I had my mattress on the living room floor and the vibration went right through my chest, and the feeling of it made me think the apartment underneath had a ceiling fan spinning. They don't.
Could a subwoofer be causing all that? Or should I look for another explanation? It's real, I've had friends stay and they've experienced it as well.
Thanks