3
PS38 (120V)
I
NTRODUCTION
Infinity
®
PS38 Powered Subwoofer
The Infinity
®
PS38 powered subwoofer continues the longstanding Infinity
commitment to accurate sound reproduction. Our proprietary technology
and engineering resources work together to deliver uncompromised low-
frequency performance in any stereo or multichannel home theater system.
Unpacking the Subwoofer
If you suspect damage from transit, report it immediately to your dealer. Keep
the shipping carton and packing materials for future use.
P
LACEMENT
Since installing a subwoofer can be somewhat more complicated than
installing full-range speakers, read this section very carefully prior to
connecting the subwoofer to your system. Should you have questions relating
to your installation, call your dealer or visit www.infinitysystems.com for
assistance.
The performance of the subwoofer is directly related to its placement in the
listening room and how you align the subwoofer with its satellite speakers.
Most audio authorities believe that low frequencies (below 125Hz) are
nondirectional, and, therefore, the location of a subwoofer within any
listening room is not critical; but within the limited confines of a room,
reflections, standing waves and absorptions generated within the room will
strongly influence the performance of any subwoofer system. As a result,
the specific location of the subwoofer becomes important, and we strongly
recommend that you experiment with placement before choosing a final
location.
Placement will depend upon the amount and quality of bass required and upon
your room (for example, whether or not your room permits placement of the
subwoofer near either satellite). Be sure to leave a minimum of 15cm (nearly
six inches) between the wall and the port on the subwoofer.
Setting the volume of the subwoofer in relationship to the left and right
speakers is also of critical importance because it is essential that the
subwoofer integrate smoothly with the entire system. Setting the subwoofer’s
volume level too high will result in overpowering, boomy bass. Setting the
volume level too low will negate the benefits of the subwoofer.
Subwoofer
Right-
channel
speaker
Left-
channel
speaker
Primary listening area
Figure 1.
This example shows the subwoofer positioned behind the right-
channel satellite speaker to re-create the actual location of bass instruments
in an orchestra and/or to add impact to movie soundtracks.
