Update : Taking into consideration the fact that sound waves are primarily pressure waves , I can admit I missed that point for a second. I guess the speakers being in phase refers to pressure and not to displacement, moreover I can just agree with @TSny 's statement about the diaphragm which...
I completely agree with what you’re saying, assuming the speakers are in phase with the same frequency and facing each other the constructive interference midway must result in a displacement antinode and thus a pressure node while respecting the boundary conditions (the opposite of what the...
The solution provided in the manual poses that the point halfway between the nodes at each speaker is an antinode of pressure (node of displacement) but isn't that a contradiction to the fact that the speakers are in phase? My first thought was that they must interfere constructively and have...