The ideal placement of subwoofer respective to the soundbar should be based on below given points:
1. The subwoofer should be in the same room as the soundbar.
2. The distance between the soundbar and the subwoofer should be not more than 3 meters (9.8 feet)
3. Avoid any obstruction between the soundbar and the subwoofer, such as a couch or table etc.