Operation; Maintenance And Service; Phase Control - Infinity Primus PS-8 Owner's Manual

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 sound-track at a
moderate level.
Auto On/Standby
With the Power Switch • in the ON position, the subwoofer
will automatically enter the Standby mode after approximately
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 Level
Turn your Subwoofer Level Control ¡ up to the "5"position (half way). 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
turned 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 pleas-
ing 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 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 vari-
ables such as room size, subwoofer placement and listener position.Adjust
the phase switch to maximize bass output at the listening position.
PRIMUS PS-8
6
Crossover Adjustment
The Crossover Adjustment control ™ determines the highest frequency at
which the subwoofer reproduces sounds. If your main speakers can com-
fortably reproduce some low-frequency sounds, set this control to a lower
frequency setting, between 50Hz and 100Hz.This will concentrate the sub-
woofer'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 Low-Pass Frequency Adjustment control to a
higher setting, between 120Hz and 150Hz.
NOTE: This control will have no effect if the LFE Input ¢ 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 man-
ual to learn how to view or change this setting.
M S
AINTENANCE AND
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 periodi-
cally.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 Primus subwoofer ever needs service, contact your
local Infinity dealer or distributor.
ERVICE