i believe this has been discussed to a short extend before but no answer from bose yet, a couple of months ago my AM300 started making this weird knocking noise when low deep bass during a movie or so, i didn't pay much attention then but i remember it started shortly after some software update, now is driving me crazy, is anyone else still having this issue?
https://drive.google.com/open?id=1DSVxtxfa8PzBqOFtdXmg8UP6YjCyMpoA
Link here is for an audio file i recorded when playing NBA2017, you can hear the "knocking" sound coming out of the Acoustimass 300, i already tried different locations, replaced wireless router for any interference etc.
