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Subwoofer effects
Adding a subwoofer to your speaker system expands the
bandwidth of the bass range. However, if the sub-
woofer’s reproduction bandwidth or sound output level
is improperly adjusted, the overall performance may
decrease, as shown in the graphs below.
When the subwoofer’s reproduction bandwidth
is correct
When the subwoofer’s output level is incorrect
When the subwoofer’s reproduction bandwidth
is far from the speaker’s bandwidth
When the subwoofer’s reproduction bandwidth
is close to the speaker’s bandwidth
Adjustments
Crossover frequency and output level
• Adjust the SL-107 output level and crossover fre-
quency to suit your listening room and connected
speakers.
• When the unit is connected to an amplifier via the
SPEAKER LEVEL INPUT terminals, setting the
OUTPUT LEVEL knob near the center position will
create a well-balanced sound level on most speakers.
• Be aware that you might set the subwoofer to a high
output level because superbass-range sound is less
audible than other sound ranges. To obtain well-bal-
anced frequency characteristics, set the output level to
a slightly lower level than seems optimal. (This will
also prevent the input of signals that are too strong.)
Note:
Be careful not to allow the input of excessive power.
Input levels that greatly exceed normal situations can
damage the SL-107. Also note that switching operations
at the amplifier may generate excessive noise that may
result in damage. When using switches at the amplifier,
first lower the volume to prevent accidental damage.
Placement
The placement of the SL-107 can greatly affect the
sound that is produced. In general, a good bass sound can
be obtained by installing the subwoofer in a front corner,
or at one-third the width of the wall, as shown.
Overall characteristics
Speaker characteristics
Subwoofer characteristics
Output level is too high
Output level is too low
Curve is sunken
Curve is raised