I just downloaded all the frequencies here and listened through my home system. Harman/cardon amplifier and Magnat-LS. Since I read here that 20 Hz are not audible anymore, but my LS is going down so low, I wanted to test the whole thing… And look, I hear all the sounds down to 5 Hz. They are getting quieter and quieter from Hz to Hz, but I can still hear them. The LS also goes down to 20 Hz, according to the label…but the membrane moved lan gsamier, but the more, the stronger (doesn’t know the exact expression), the deeper the Hz became. It was the most moaning in the ears at 40 and 60 Hz, although I have already turned very quietly, I had heavy pressure on the ears… Why is this all so? Can someone explain something to me? And what did I misunderstand, i.e. understand wrongly according to my data… 5 Hz you don’t normally hear anymore