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Model SB-1000 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
Many surround sound receivers and processors offer a choice of cross-
overs, typically between 80 Hz and 120 Hz. If yours does, we recommend
using the 100Hz setting when using small speakers such as those in the
System 1200 or 2200. Consult your electronics owner's manual for more
details.
Higher crossover frequencies pass more bass but can sound boomy
and may be more easily localized to the subwoofer. Higher crossover
frequencies may be suitable, however, when using very small satellites
that have no real low frequency performance. Settings lower than 80Hz
should be employed if you are using larger speakers that have extended
bass response. This way, the subwoofer will only reproduce the very low-
est bass frequencies that are in the range where the large main speakers
begin to roll off.
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 3/4” 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.
INPUT
AC
FOR 115V, USE T5AL 250V FUSE
FOR 230V, USE T3.15AL 250V FUSE
AC INPUT 50 / 60Hz 500W MAX
Model 422 SB
REPLACE ONLY WITH SAME TYPE 250V FUSE
FOR CONTINUED PROTECTION AGAINST FIRE,
CAUTION:
AUTOON
60 Hz
40 Hz 140 Hz
INVERTNORMAL
NORMAL BYPASS
RIGHT L / MONO
FREQUENCY
CROSSOVER
PHASE
CROSSOVER
OUTPUT
INPUT
STANDBY
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
DOUBLE INSULATION - WHEN SERVICING USE ONLY IDENTICAL REPLACEMENT PARTS
2001310
015-1100
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.
Using the Subwoofer Crossover Control
When used with the System 1200 or 2200,
the Crossover control should be set at
around 100Hz unless you are using a pro-
cessor with its own built-in crossover. 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.”