Wilson Audio WATCH Dog Subwoofer Series-2 - Manual (Page 53)

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Notes Regarding the Interpretation of Measurements:
A. Use “slow” meter response ballistics to help average out the
reading… and to keep from going crazy trying to read it!
B. Ears and meters are not directly interchangeable. They neither
sample nor process the sound in a completely analogous
manner.
4. If you choose to use the high pass section of the WATCH Dog controller to
roll off bass to your main speakers, you can use your measured data to
select a low pass (LP) frequency. The suggested setting for the high pass
frequency is at the point where the measured frequency curve begins to
“roll-off,” specifically at the frequency that is minus three to minus six dB
(relative to the average level of the full-range response). If specific measure-
ments are not available, I like to start, as a general rule, at 50 Hz with an 18-
dB/octave LP slope. I believe that the vast majority of loudspeakers with
which the WATCH Dog will likely be partnered should have enough clean
output and power handling in the 40-50 Hz region to allow this approach.
However, some rooms exhibit so much loss in the LF that the L & R speak-
ers may have difficultly in that region and need help from the subwoofer up
to 60-80 Hz. Another scenario might include problematic room acoustics,
with a significant upper bass peak. In such a case, correction may be
achieved by running the WATCH Dog up to 120-140 Hz and using its EQ to
notch out the room peak. This is one area where acoustical measurements,
as described above, are of great benefit.
Introduction of The WATCH Dog Into Your System
5. Check to see that the L & R loudspeaker power amps are “Off” or on
C o n t r o l P a n e l S e t u p - C o n t i n u e d