LOCATION
The acoustic properties and size of the listening environment can drastically influence the
SPL (Sound Pressure Level) and
f
3
(-3dB roll-off) of the subwoofer. However it's important to note that large or small acoustic spaces have little to no effect on the
subwoofer cone excursion & box
"Q." For the most part, we'll discuss the optimum location for two different installation methods:
Studio Installation and Home Theater Installation.
Studio Installations
In studio installations, damping material is usually used on the walls and ceilings make the room “acoustically dead.” The
main monitors are typically located 3' to 6' from the mixing console and therefore considered a near field (close field)
application. In this type of anechoic environment, the subwoofer will tend to experience minimal "Boundary Loading"
effects. For studio installations, HAFLER recommends experimenting with different locations within the studio that minimizes
rattles or vibration of other equipment. You can fire the subwoofer downward (FIG. 1) or fire the subwoofer directly facing
forward (FIG. 2).
In either application keep the subwoofer cabinet at least 5" (12.7 cm) away from any wall.
I
N S T A L L A T I O N
FIG. 1
Downward Firing
FIG. 2
Forward Firing
Home Theater Installations
Home Theater installations are typically medium sized
living rooms or game rooms that have large flat, uncov-
ered walls. Acoustics in this type of installation can have
a big effect on the
SPL and
f
3
of the subwoofer because
the walls are very reflective. The only elements in these
installations that acoustically "absorb" sounds are
furniture and carpet. Dramatic "Boundary Loading" can
be achieved by locating the subwoofer under a table, next
to a wall or in a corner (FIG. 4), thus increasing
SPL and
lowering the
f
3
of the subwoofer system. Locating the
subwoofer in the middle of the room or in a large open
area where there are few reflective surfaces will cause a
decrease in
SPL and an increase in
f
3
. Experiment with
different locations in the room to determine which type of
bass response works best in your home theater.
-
9
-
Keep subwoofer enclosure
5" (12.7 cm) from any wall
Listening Area
Left
Front
Right
Front
Center
Front
Right
Rear
Left
Rear
Subwoofer
FIG. 4
Position the subwoofer near a wall or in a corner
