Subsonic Roll Off Adjustment

In the frequency range below 20 Hz down to 0 Hz, various Subsonic Roll Offs can be specified. The Subsonic Roll Off is set by adjusting the gain at 0 Hz and then adjusting the frequency knee. The following image shows the Subsonic Gain Adjust screen:

The following image shows the Subsonic Frequency Adjust screen

Note that only negative gains are allowed since we are concerned with rolling off or attenuating the subsonic energies. The Subsonic Roll Off will be a smooth curve starting at the frequency knee and continuing down to the gain specified at 0 Hz. The Fine and Course Adjust operation is the same as described in the Volume Balance Adjustment section. A unique Subsonic Roll Off Adjustment can be stored and retrieved for each Track on every Disc and each Music file.