ONKYO SL-107 Manual Do Utilizador

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7
 
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
SL-107_Chi.book Page 7 Tuesday, September 30, 2003 2:43 PM