Boston PRi Serie Manual De Instrucciones página 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 Good
PRI665CV 3.18
PRI685CV .619
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 x Speaker F value
max diff
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 Max SPL
PRi665CV 101 dB
PRi685CV 103 dB
PRi85SubCV 101 dB
Better Best
.606 .086
.183 1.746
)
max
)
max
/, Spacing /)
L W
/+ Spacing ) ... and so on until all columns are placed
L L
/+ Spacing ) ... and so on until all columns are placed
W W
Note: These are not the absolute max SPL for the speaker. These are
guidelines to use for designing systems.
in feet and the Max SPL of the speaker. Use the
diff
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