咁距離都應該ok, 試下唔同擺位再cal下佢, 隨時可以慳番d錢唔使升級住
from svs:
the height speaker channels should be placed in the upper left/right corners of the front stage. Typically, this will be 40-45 degrees off-axis and about 8 feet in height. A downward tilt of the speaker will improve mid/high frequency response and reduce ceiling bounce reflections.