User Manual

English • 5
PRO.BOSE.COM
Design Worksheet
Woofer Size Model Sensitivity (dB)
Highest Tap /
Power Handling
Recommended Ceiling
Heights
2"–4"
DM2C-LP (70/100V)
84
9W
2.5 m–6.1 m (8'–20')
DM2C-LP (16Ώ) 16W
DM3C 83 25W
FS2C 86 16W
FS4CE 88 40W
5"–8"
DM5C 87 50W
3 m–10 m (10'–32')
DM6C (70/100V)
88
80W
DM6C (8Ώ) 100W
DM8C (70/100V)
91
80W
DM8C (8Ώ) 125W
Step 3: Response
Confirm that the chosen loudspeaker will meet your low frequency response requirement.
Vocal-range Low Frequency
(–10 dB)
Full-range Low Frequency
(–10 dB)
Extended-
range
Low Frequency
(–10 dB)
DM2C-LP 85 Hz FS4CE 70 Hz FreeSpace 3
system
40 Hz
FS2C 83 Hz DM5C 65 Hz EdgeMax
EM90/EM180
45 Hz
DM3C 75 Hz DM6C 59 Hz
DM8C 52 Hz Any vocal-
range or
full-range
loudspeaker
combined with
DM8C-SUB
subwoofer
38 Hz
Step 4: Coverage
Determining Loudspeaker Quantity and Spacing
The goal is to fill a rectangle-shaped room with coverage circles at your desired density. Using the graph
paper on the last page, create a sketch layout of the room. Using your sketch of the room, follow the steps
below to create a layout with the loudspeaker spacing that meets your coverage requirement. Calculators or
software can simplify this process. Medium-sized or larger distributed installed systems for background music
or voice typically have four or more ceiling loudspeakers in a room. Use Loudspeaker Spacing Distance (LSD)
for small rooms that only need one.
A. Calculate the Loudspeaker Spacing Distance (LSD)
CA
L = Listener Height
Seated: 3.5 ft | 1 m
Standing: 5 ft | 1.5 m
CA = Coverage Angle
Small Woofer 120°
Large Woofer 105°
Note: Small woofer and large woofer
coverage angle take into account
linear dispersion at ear level and
room reverberation considerations.
H = Ceiling/Mount Height
Loudspeaker
Floor
–6 dB