Dynaudio SUB 600 用户手册

Every listening environment will have specific “room-modes”, whereby in some specific 
locations in the room and at particular frequencies, the bass may be too much or too lean. 
This effect will be stronger in square and “shoe-box” shaped rooms. With a single 
subwoofer, the better position for the subwoofer relative to the listening position will be the 
one where bass is perceived to be neither too much nor too lean at any given frequency.
 Avoid placing the subwoofer at 1/4, 1/2 or 3/4 of either the length or width of the room 

as at these locations the room-modes are likely to be strongest (the dashed lines in the 
figure)

Always position subwoofers at least 1 mtr/3 ft away from a CRT television as the 
magnetic field emanating from the subwoofer may otherwise distort the picture. If 
you see discoloration on the television screen, try moving the subwoofer and other 
speakers close by away from the television.