22.3 SETTING OF THE DELAY WITH THE STEPThe following plots show a speaker combination from midrange and tweeter.Between the speakers is a delay, the sound of the speaker doing not reach the microphone atthe same time.The plot shows the sound pressure of a combination with the tweeter behind the midrange.The plot shows the sound pressure of a combination with the tweeter before the midrange. Thetweeter needs a delay to be in time.To set the delay the distance of from the two speakers is measured. Then the difference iscalculated. For the difference, S in meter, the delay time, T, is calculated.C = 340m/sec T = S m sec / 340mThe next step is to vary T to get the plot shown below.67
