Subwoofer Reviews

This graph shows the close-miked response of the AC Sub 100 subwoofer. Normalized to the level at 80 hertz, the measurement indicates that the lower -3decibel point is at 47 Hz and the -6dB point is at 25 Hz. The upper -3dB point is at 154 Hz with the frequency control set to its maximum of 150 Hz. Since the port on the bottom of this unit must be unobstructed for proper operation, care must be exercised by the user to ensure that the included feet are properly attached to allow clearance from the floor or other supporting surface. Operating this unit with the bottom of the cabinet sitting flush against the floor will severely degrade the low-frequency performance.—AJ