Tyco 579-769 Opposite Speaker, Wall Mounted Speakers In Meters Room Coverage Width

Distributed Wall Mounted Systems, Continued

Design of a

Distributed Wall

Mount System

The design of a distributed wall mount system is similar to an overhead system, with some important differences. In a wall mount system the speaker-to-listener distance depends on the listener location in the room. Therefore the audibility calculations must be done with the listener at the farthest distance from the speaker. In a room with speakers mounted along a single wall, the farthest distance (lowest SPL) can be taken within 3 feet (1 meter) of the opposing wall.

In general, the wall mount speakers are located between 80 and 96 inches above the floor. This satisfies the requirements for speaker-strobe combination units. The figure below shows the typical coverage of a wall mount speaker.

Simplex Wall Mount Speaker

Viewed from ceiling Coverage Example

Wall

		Room Depth
	Critical Polar Angle	On Axis
		-6dB
3' off wall	Coverage Width
Wall
	Figure 2-8. Wall Mount Speaker Coverage Pattern

The coverage patterns for wall mount speakers are the same for distributed overhead systems, with the goal of minimizing SPL variations in the protected area. Equation 2-11 can be applied to wall mounted systems by replacing the speaker to listener distance (D2) with the room width minus

3 feet. In a wall-mounted system, it is generally more appropriate to consider the diameter of coverage rather than the coverage area. The coverage diameter defines the width of wall coverage, and ultimately the speaker spacing depending on the coverage overlap pattern.

Table 2-4. Wall Mounted Speaker Coverage Width Vs. Room Depth

Wall Mounted Speakers (In Feet)

Room	Coverage Width
	3 Feet from Wall
Width
	Opposite Speaker

10 Feet	18 Feet
12 Feet	23 Feet
14 Feet	28 Feet
16 Feet	33 Feet
18 Feet	38 Feet
20 Feet	44 Feet

Wall Mounted Speakers (In Meters)

Room	Coverage Width
	1 Meter from Wall
Width
	Opposite Speaker

2.5 Meters	3.8 Meters
3.0 Meters	5.1 Meters
3.5 Meters	6.4 Meters
4.0 Meters	7.7 Meters
4.5 Meters	9.0 Meters
5.0 Meters	10.2 Meters
5.5 Meters	11.5 Meters
6.0 Meters	12.8 Meters

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