Bose EdgeMax EM90 - EdgeMax Design Considerations; Standard and Premium Coverage

Design Guide - 6
EdgeMax Design Considerations
EdgeMax Design Considerations
Standard and Premium Coverage
The EdgeMax design guidelines oer two options for quality of coverage: Standard and
Premium. When creating a design with Standard coverage, which should be suitable for most
applications, EdgeMax loudspeakers are spaced such that the overlap between adjacent
loudspeakers occurs at the -10 dB point. A design created with Premium coverage places the
loudspeakers such that they overlap at the -6dB point.
Maximum Room Dimension
Like a surface-mounted loudspeaker, the mounting height of an EdgeMax loudspeaker will
determine its usable throw distance. The usable throw distance is the distance from the
loudspeaker that we can expect to receive balanced frequency response and adequate
loudness for a given application.
The quality of coverage for EdgeMax loudspeakers was derived using the vertical coverage
angle, and confirmed using the Bose® Modeler® software.
Eective
Loudspeaker
Height
75
°
4.2 m | 14 ft ceiling
1.5 m | 5 ft ear height
Premium Coverage
(nominal -6 dB)
Standard Coverage (nominal -10 dB)
62°
Figure 6. Standard and Premium coverage comparison for EdgeMax loudspeakers.
Figure 7. Usable Throw Distance based on coverage quality for various ceiling heights.
Assumes 1.5 m (5’) ear height.
Usable Throw Distance, EdgeMax EM90 and EM180
Mounting Height
m 2.7 3.0 3.7 4.3 4.9 5.5 6.1
ft 9 10 12 14 16 18 20
Coverage
Quality
Premium
m 2 2 3 4 5 6 7
ft 7 8 11 15 18 21 24
Standard
m 3 4 6 8 9 11 13
ft 11 14 19 25 30 35 40