Boston Acoustics PRi665CV Mode D'emploi page 5

Room Dimensions: use inches instead of feet and inches
Listener Position: Standing =64.4 inches (164mm); Sitting = 48.5 inches (14mm)
Speaker F Values
Speaker
PRI665CV
PRI685CV
Note: Good coverage = ± 6dB; Better coverage = ± 3dB and Best coverage = ± 1.5 dB. Typically we recom-
mend Better coverage but if cost constraints make this impossible for the customer, then use the Good cover-
age. Best coverage is where you want very even coverage and typically either low or high SPL.
H = Ceiling Height – Listener Position
diff
Spacing = H
max
Columns = Roundup ( room length / Spacing
Rows = Roundup ( room width / Spacing
Spacing = room length / columns
L
Spacing = room width / rows
W
First speaker is placed at (Spacing
Next column is placed at (Spacing
Next Row is placed at (Spacing
To determine how many subwoofer you require for a room, the calculations are much easier. You determine the
cubic feet of the room (L x W x H all in feet), divide this number by 15,000 and round up.
To determine the max SPL in the room, you need to know H
following Max SPL at 3 feet for each speaker is:
Speaker Type
PRi665CV
PRi685CV
PRi85SubCV
142-002698-D OWNERS MANUAL PRICV5 5
All manuals and user guides at all-guides.com
Good Better
3.18 .606
.619 .183
x Speaker F value
diff
max
/, Spacing
L
/+ Spacing
L
/+ Spacing
W
Max SPL
101 dB
103 dB
101 dB
Note: These are not the absolute max SPL for the speaker. These are
guidelines to use for designing systems.
Best
.086
1.746
)
max
)
/)
W
) ... and so on until all columns are placed
L
) ... and so on until all columns are placed
W
in feet and the Max SPL of the speaker. Use the
diff
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10/4/07 3:24:06