To all BIC America pl-200-ii owners please share ur experience. I purchased BIC America pl200-ii after demo. The sub is excellent but at extreme lows it produces port and cabin noise. To be exact on the type of noise at first I thought the noise was due to vibrations on my glass windows and after so much testing I finally stood near the sub and the noise was coming from the port nd sub cabin. Apart from this the sub is mind blowing in performance. As any one experienced this issue and managed to get a fix?. I also checked in so many forums where other users mentioned the same problem.