Infinity PS212, Руководство по обслуживанию, Страница: 8 / 33

PS212 (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 sub by pressing the Power Switch
¡
on the rear panel.Turn
on your entire audio system and start a CD or movie soundtrack at a
moderate level.
Auto On/Standby
With the Power Switch
¡
in the ON position, the Status LED
£
on
the back panel 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 after approxi-
mately 10 minutes when no signal is detected from your system. The
subwoofer will then power ON instantly when a signal is detected. During
periods of normal use, the Power Switch
¡
can be left 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-line 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 information.
Set the overall volume control of the preamplifier or stereo to a comfort-
able 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 is not entirely true. A subwoofer is there to enhance bass,
extending the response of the entire system so the bass can be felt as
well as heard. However, overall balance must be maintained 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 several
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 comfort-
ably reproduce some low-frequency sounds, set this control to a lower
frequency setting, between 50Hz and 100Hz. This 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, the Low-Pass
Frequency is set by the processor/receiver. Consult your owner’s manual
to learn how to view or change this setting.
M
AINTENANCE AND
S
ERVICE
The enclosure may be cleaned using a soft cloth to remove fingerprints
or to wipe off dust.
The grille may be gently vacuumed. Stains may be removed with an
aerosol cleaner, following 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 the metals
involved in the connections, atmospheric conditions, and other factors,
but once per year is the minimum.
In the event that your subwoofer ever needs service, contact your
local Infinity dealer or distributor, or visit www.infinitysystems.com
for a service center near you.
7
PS series PS212 subwoofer