Kappa Series Powered Subwoofer – Owner’s Manual
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23
Example 2. Two Response Peaks:
Characterized by two response peaks, approximately equal in amplitude and width.
This requires that you make a choice between the two peaks. In situations like this, the
higher frequency peak will always be more audible and objectionable. Response peaks
below 45Hz, unless extreme, can actually be beneficial toward achieving visceral
impact. Perform corrections on the upper frequency peak.
Apply the Width Selector as described above. Align the center-line of the Selector over
the center of the higher frequency peak. Now adjust the Selector until you have
achieved the “best fit.” The slider now points to the correct width setting. In this
example, this is at 52Hz. The best-fit width is 28%. Fill in the Width and Frequency
fields provided on the template.
Determine the appropriate level using the technique described earlier. This calculation
will indicate a -8 dB setting. However, this peak does not reach the 0 dB level as the
lower peak does. Therefore, a -8 dB setting would be excessive. The 52Hz peak stops
at -2dB. Subtracting 2 from 8 yields the correct setting, -6 dB. Enter -6 in the Level field.
Skip to the “Adjusting the R.A.B.O.S. Equalizer” section on page 28.
Figure 18
Two response peaks
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