Operation - Infinity ENTRA SUB TWO Service Manual

Entra Sub Two
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's Level control
position.
Turn on your sub by pressing the Power button
Turn on your entire audio system and start a CD or movie sound-
track at a moderate level.
Auto On/Stand-By
With the Power Switch
the back panel will remain lit in red or green to indicate the
On/Stand-By mode of the subwoofer.
RED = STAND-BY (No signal detected, Amp Off)
GREEN = ON (Signal detected, Amp On)
The subwoofer will automatically enter the Stand-By 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 Gain
Turn your subwoofer's Level control
(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 button
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
comfortable level. Adjust the subwoofer's Level control
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 never obtrusive.
Phase Control
The Phase switch
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.
ENTRA SUB TWO
O
PERATION
to the "min"
on the rear panel.
in the ON position, the LED
up to the "5" position
been pressed to the "On"
determines whether the subwoofer
Crossover Adjustments
Low-Pass-Frequency Adjustment control
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 – 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 Low-Pass Frequency Adjustment control to a
higher setting, between 120Hz – 150Hz.
on NOTE: This control will have no effect if the Line/LFE 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
until
7
– The Low-Pass
S
AINTENANCE AND ERVICE