6
PS312 (120V)
O
PERATION
Power On
Plug your subwoofer’s AC cord into a wall outlet. Do not use the outlets on the
back of the receiver.
Initially set the Subwoofer Level Control
∞
to the “Min” position.
Turn on your subwoofer by pressing the Power Switch
¡
. Turn on your entire
audio system and start playing a CD or movie soundtrack at a moderate level.
Auto On/Standby
With the Power Switch
¡
in the ON position, the Status LED Light
£
will
remain lit in red or green to indicate the On/Standby mode of the subwoofer.
RED = STANDBY (No signal detected, amp off)
GREEN = ON (Signal detected, amp on)
The subwoofer will automatically enter the Standby mode if it detects no
signal from your system for about 10 minutes. When it detects a signal, the
subwoofer will power on instantly. During periods of normal use, you can
leave the Power Switch
¡
on. You may turn off the Power Switch
¡
for
extended periods of nonoperation, e.g., when you are away on vacation.
Adjust Gain
Turn your Subwoofer Level Control
∞
up to the halfway position. If no sound
emanates from the subwoofer, check the AC-power cord and input cables.
Are the connectors on the cables making proper contact? Is the AC plug
connected to a “live”receptacle? Has the Power Switch
¡
been pressed
to the “On”position? Once you have confirmed that the subwoofer is active,
proceed by playing a CD, record or cassette. Use a selection that has ample
bass.
Set the overall volume control of the preamplifier or stereo to a comfortable
level. Adjust the Subwoofer Level Control
∞
until you obtain a pleasing blend
of bass. Bass response should not overpower the room but rather be adjusted
so there is a harmonious blend across the entire musical range. Many users
have a tendency to set the subwoofer volume too loud, adhering to the belief
that a subwoofer is there to produce lots of bass. This belief is not entirely
true. A subwoofer is there to enhance bass, extending the response of the
entire system so listeners can feel the bass as well as hear it. However, the
system must maintain an overall balance, or the music will not sound natural.
An experienced listener will set the volume of the subwoofer so its impact on
bass response is always there but is never obtrusive.
Phase Control
The Phase Switch
¶
determines whether the subwoofer speaker’s piston-like
action moves in and out with the main speakers (0°) or opposite the main
speakers (180°). Proper phase adjustment depends on variables such as
room size, subwoofer placement and listener position. Adjust the phase switch
to maximize bass output at the listening position.
Crossover Adjustment
The Crossover Adjustment Control
¢
determines the highest frequency
at which the subwoofer reproduces sounds. If your main speakers can
comfortably reproduce some low-frequency sounds, set this control to a lower
frequency setting, between 50Hz and 100Hz. This setting will concentrate the
subwoofer’s efforts on the ultradeep bass sounds required by today’s films
and music. If you are using smaller bookshelf speakers that do not extend to
the lower bass frequencies, set the Crossover Adjustment Control to a higher
setting, between 120Hz and 150Hz.
NOTE: This control will have no effect if the LFE/Normal Selector
§
is set
to LFE. If you have a Dolby Digital or DTS processor/receiver, it will set the
low-pass frequency. Consult your owner’s manual to learn how to view or
change this setting.
M
AINTENANCE AND
S
ERVICE
You may clean the enclosure using a soft cloth to remove fingerprints or to
wipe off dust.
The grille may be gently vacuumed. You may remove stains with an aerosol
cleaner; follow its instructions. Do not use any solvents on the grille.
All wiring connections should be inspected and cleaned or remade
periodically. The frequency of maintenance depends on atmospheric
conditions, the metals involved in the connections and other factors, but once
per year is the minimum.
If your subwoofer ever needs service, contact your local Infinity dealer or
distributor, or visit www.infinitysystems.com to find a service center near you.
