ONKYO SL107
Instrukcja Obsługi

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

Subwoofer effects
Adding a subwoofer to your speaker system expands the bandwidth of the bass range. However, if the subwoofer�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
Overall characteristics

Adjustments
Crossover frequency and output level � Adjust the SL-107 output level and crossover frequency to suit your listening room and connected speakers. � When the unit is connected to an ampli�er 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-balanced 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 ampli�er may generate excessive noise that may result in damage. When using switches at the ampli�er, �rst lower the volume to prevent accidental damage.

Speaker characteristics

Subwoofer characteristics

When the subwoofer�s output level is incorrect
Output level is too high

Output level is too low

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.

When the subwoofer�s reproduction bandwidth is far from the speaker�s bandwidth
Curve is sunken

When the subwoofer�s reproduction bandwidth is close to the speaker�s bandwidth
Curve is raised

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