two speakers are separated along a straight line on the x axis . both speakers are fed by a single source so they are in sync and in phase balance. both speakers run at 300hz. bob is standing at point a. speaker a speaker b point a (bob). bob is on the y axis and shares the x co ordinate with speaker b question, shortest distance, , at which bob would hear no sound when listening to music. where is the first dead space for bob?? please explain.

two speakers are separated along a straight line on the x axis . both speakers are fed by a single source so they are in sync and in phase balance. both speakers run at 300hz. bob is standing at point a. speaker a speaker b point a (bob). bob is on the y axis and shares the x co ordinate with speaker b question, shortest distance, , at which bob would hear no sound when listening to music. where is the first dead space for bob?? please explain.