Atlantic Technology SB-1000 Manuale di istruzioni - Pagina 4
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4
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
Using the Subwoofer Crossover Control
ON
AUTO
When used with the System 1200 or 2200,
60 Hz
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
40 Hz
140 Hz
system by ensuring that the subwoofer and
satellites produce a cohesive and well integrated sound "picture. "
NORMAL
INVERT
Subwoofer Troubleshooting Guide
NORMAL
BYPASS
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.
RIGHT
L / MONO
Problem
No bass output
Audible buzz or hum
2. Move to
corner for
more bass
3. Move away
from wall for
less bass
STANDBY
CROSSOVER
FREQUENCY
PHASE
CROSSOVER
Possible Cause
OUTPUT
AC power cord unplugged or
plugged into a non-working outlet.
Input cables not securely
connected or defective.
INPUT
Input cable not securely connected
or defective.
Ground loop through antenna or
cable TV system input.
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.
Possible Solution
Plug into a working outlet.
Check all connections, then try another
input cable.
Check all connections, then try another
input cable.
Test by disconnecting antenna and/or cable
system input leads. If hum goes away, install
isolation balun(s) at that point.
Model SB-1000 Powered Subwoofer
015-1100