Owners Manual
Page 6
...each speaker in the narrow part of either the right or the left and right sides of the other speakers because sub-bass sounds are forming between the front speakers, facing directly forward. It may be necessary to break up parallel wall surfaces by its respective location. Note Make sure... affects the overall sound quality of the room, you connect the speakers, place each speaker by placing bookshelves, etc., along them. Center speaker (NS-C40): Place the center speaker centrally between the two parallel walls and cancelling out the bass sounds. Use 3.5 to the wall.
...each speaker in the narrow part of either the right or the left and right sides of the other speakers because sub-bass sounds are forming between the front speakers, facing directly forward. It may be necessary to break up parallel wall surfaces by its respective location. Note Make sure... affects the overall sound quality of the room, you connect the speakers, place each speaker by placing bookshelves, etc., along them. Center speaker (NS-C40): Place the center speaker centrally between the two parallel walls and cancelling out the bass sounds. Use 3.5 to the wall.