Genesis I.C.E. 928 - Manual (Page 10)

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~ДлздмнЙ=СбЗЙдбну™
Adjust the low pass filter to 63. Set the gain control to 6. At this point,
you can turn on the woofer amplifier.
Tuning the system in
Music is the best way to begin your setup procedure. We suggest that
video sources be used only after you have setup the system to
properly reproduce music.
Set the low pass filter to the -3dB point of your main left/right speakers,
and the gain to 30, and start from there. If you don’t know the –3dB
point of your main left/right speakers, start working from a low-pass
filter frequency of 63Hz. This will work for most small speakers.
We suggest that you start with a single vocal with instrumental
accompaniment because the sound of the human voice is more easily
recognizable than many instruments and is the least complex sound to
deal with.
Turn the gain control of the subwoofer amplifier up or down until the
voice sounds correct. Concentrate on the mid bass regions (as
opposed to the very low bass in your recording) to achieve a natural
blend. The voice and the music accompaniment should sound as if it
were cut from one cloth, not separate.
If the voice sounds “thin” or does not have enough “chest” to its sound,
turn the woofers gain control up untill it does, or at this point, you may
want to experiment with increasing or decreasing the low pass filter
control. This control will raise or lower the frequency cutoff point of the
woofer.
If you find that the sound is “thin” or lacking in mid bass and that
turning the gain control up to “thicken” the sound creates too much low
bass, this is a good indication that you may want to turn the low pass
filter up to a higher number instead. This will extend the response of
the G928 into the upper bass regions without affecting the low bass
level.
Next, set the woofers using more than just a voice. Select some music
that you know to have good deep bass, a symphonic piece of music if
you can, or use a natural bass instrument for your guide. Try to make it
sound real. You may have to return to the vocal to make sure you have
not gone too far in one direction.
If, at this point, it does not have enough mid bass, turn the low pass
filter to a higher position or, alternately, position the main speakers