Quote:
Originally Posted by RScott  if you're getting a null, it's from that frequency hitting your ears from two or more different paths. The paths may be at different phases and angles, and the sum ends up being a low amount due to a near or total cancellation. |
Exactly. And those "collision points" are highly localized. So besides reducing headroom and increasing loudspeaker distortion, EQ boost will also make the response worse elsewhere in the room. Even four inches a way a null can become a peak. Look at the response curves below at 71 Hz (between the 56 Hz and 92 Hz markers) in the graph below. This was measured in a bedroom size space.
--Ethan
