Raising a directive horn reduces front-to-back path variation but loses low frequencies.

Evidence

A single constant directivity horn speaker 7.5 m above ear height. Mounting the speaker higher up, as shown in Figure 7.31, reduces the path variations between the front and back row. By making the speaker directive we can ensure that more of the sound goes to the audience. However, we have to handle the low frequencies with a separate loudspeaker because of the frequency limitations of the constant directivity horn. — David Howard, Jamie Angus, coustics and Psychoacoustics, 2508

Categorization

• DEFINE: Introduces the constant directivity horn as a design solution, along with its low-frequency limitation.