Since you laid out exactly zero information about the supposed "sonic defect" or any prior attempts to rectify it, then I have no idea what to think about any of it.
If you want anyone to take whatever your issue is seriously, I would suggest a more detailed approach rather than a single hit-and-run post.
If you want anyone to take whatever your issue is seriously, I would suggest a more detailed approach rather than a single hit-and-run post.