This article will help you if your wired subwoofer is crackling, has intermittent sound or no sound.
Subwoofers produce low-frequency sound, so it's unlikely that you will actually 'hear' sound at low volumes. Try placing your hand on top to see if you can 'feel' any vibrations. If you can't, try the below steps one by one until your issue is fixed:
This article applies to the following products: BAR M9LX, BAR M10LX, T12, T9
If you're still having issues, why not try our newly launched forum? Our support advisors are on hand to help you out. Alternatively, contact our support team who will be happy to help. Please provide your soundbar serial number and your TV make and model number for a faster service.