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Model SB-900 Powered Subwoofer
Placement and Operation
Generally speaking, the best location for your new subwoofer is the
front of the room, close to a corner (Figure 5). Every room has its own
unique sound characteristics, and flexibility in the exact placement of
the subwoofer is always desirable. The closer the subwoofer is placed to
a wall and especially a corner, the more and deeper the bass response
you will hear. However, in some rooms, corner placement can produce a
“one note” boomy effect. Under such circumstances the subwoofer may
work better away from the corner. Experiment to find the best position
in your room.
Figure 5
Typical arrangement for a single subwoofer in a home theater.
1. Start here
2. Move to
corner for
more bass
3. Move away
from wall for
less bass
Using the Subwoofer Low-Pass Control
NOTE: Set this control to "Bypass" if you
are using a receiver that has its own sub-
woofer crossover. Set this control to "LOW-
PASS" if your electronics do not have a
bass management function. The goal is to
optimize the performance of the system by
ensuring that the subwoofer and satellites
produce a cohesive and well integrated sound “picture.”
Most surround sound receivers and processors offer a choice of cross-
overs, typically between 60 Hz and 150 Hz. We recommend using a
setting between 120Hz and 150Hz when using small speakers such as
those in a soundbar. Consult your electronics owner's manual for more
details.
It’s generally undesirable to have the main speakers and the subwoofer
overlap too much. Larger speakers means a lower Low-pass crossover
frequency, smaller speakers means a higher Low-pass crossover fre-
quency. Consult the manufacturer’s specified low frequency response
for your main speakers to determine the appropriate Low-pass setting
on your subwoofer. In the end, however, a little time spent experimenting
will generally result in dramatically better bass response.
Care of Your Subwoofer
Your subwoofer is constructed from Medium Density Fiberboard. MDF
is a non-resonant material ideal for speaker system enclosures. To clean
the cabinet you may use a soft cloth either dry or slightly dampened with
clean water. Be careful not to wet the cabinet or allow any water to enter
the cabinet seams. Avoid placing your speakers in direct sunlight or near
a source of heat that may, over time, damage the finish.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE AND RATING OF FUSE
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK.
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
DOUBLE INSULATION - WHEN SERVICING,
USE ONLY IDENTICAL REPLACEMENT PARTS
SERIAL
MODEL
SB900BJRWWY80100
SB-900-BLK Powered Subwoofer
AUTO
OFF ON
PHASE
INVERT NORMAL
LEVEL LOWPASS
BYPASS
LOW LEVEL
RIGHT
L / MONO
STATUS
HIGH LEVEL
INPUTOUTPUT
RIGHTRIGHT L / MONOL / MONO
AC INPUT
50-60 HZ 180W MAX
FOR 110-120V, USE T2AL 250V FUSE
FOR 220-240V, USE T1AL 250V FUSE
110-120V
220-240V
MIN MAX 40 220
80
ENGINEERED IN THE USA,
MANUFACTURED IN CHINA
015-1099
Subwoofer Troubleshooting Guide
Once your subwoofer is set up, you should have many years of maintenance free enjoyment from your system. However, if you should encoun-
ter a problem, refer to the following guide to help you find the solution. If a problem persists, you should contact your local authorized Atlantic
Technology dealer.
Problem Possible Cause Possible Solution
No bass output AC power cord unplugged or Plug into a working outlet.
plugged into a non-working outlet.
Input cables not securely Check all connections, then try another
connected or defective. input cable.
Audible buzz or hum Input cable not securely connected Check all connections, then try another
or defective. input cable.
Ground loop through antenna or Test by disconnecting antenna and/or cable
cable TV system input. system input leads. If hum goes away, install
isolation balun(s) at that point.
SB-900 Manual.indd 4 10/18/10 3:19:35 PM