Bose EdgeMax EM90 Руководство по проектированию - Страница 19
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Step 5: Select the type of layout that will be used based on the Usable Throw Distance, and
the dimensions of the room where the system will be installed
NOTE: For designs where bass is a primary consideration, square rooms
with 4x EM90s will deliver more bass then 4x EM180s, due to the additional
wall-boundary loading provided by the corner mounting.
Step 6 (Amplifier Size): Calculate the required amplifier size Use the Tap Chart below to
determine which loudspeaker tap is required for this design
A. Locate the loudspeaker mounting height for this design
B. Draw a line down to the desired maximum SPL
C. Draw a horizontal line across the chart to read the required loudspeaker tap
Mount
Height
2.5
10
TAP
20
40
80
8 Ohm
D. Calculate the required amplifier power:
E. Calculate the required amplifier size:
2x EM90 in Corners
EM
90
Usable Throw Distance
Continuous SPL, EdgeMax EM90
m
2.7
3.0
3.7
ft
9
10
12
94
92
89
5
97
95
92
100
98
95
103
101
98
106
104
101
109
107
104
111
109
106
Number of
Loudspeakers
Power Required
Design Worksheet, EdgeMax EM90 Systems
4x EM90 in Corners
EM
EM
90
90
EM
90
4.3
4.9
5.5
14
16
18
87
85
83
90
88
86
93
91
89
96
94
93
99
97
96
102
100
99
104
102
100
=
X
Required
Loudspeaker Tap
=
1.25
X
Headroom
EM
90
EM
90
2x Usable Throw Distance
6.1
6.7
7.9
9.1
20
22
26
30
82
81
79
78
85
84
82
88
87
85
84
91
90
88
94
93
91
90
97
96
94
93
99
98
96
95
Power
Required
Amplifier Size
81
87
dB
SPL
Design Guide - 19