Coverage map

A rectangular room, one or two loudspeakers, seen from above at ear height.

The room

Width (m) Depth (m) Ear height (m) Band

Loudspeakers

Level at 1 m (dB) Height (m) Spacing (m) Setback (m) Number Coverage at −6 dB (°)

Seen from above

—

—max−min spread

—mean

—maximum

—minimum

What this map does not show. It computes the direct field: no reflections off the walls, no reverberation, no phase between loudspeakers. Two loudspeakers add 3 dB here where, in reality, they can add up to 6 dB or cancel. It is for comparing placements, not for promising a result.