Página 4 del manual.
Crossover Adjustments
NOTE: This control will have no effect if the Normal/LFE Selector
Switch is set to LFE.If you have a Dolby Digital or DTS
processor/receiver, the Crossover Frequency is set by the
processor/receiver. Consult your owner’s manual to learn how
to view or change this setting.
The Crossover Adjustment Control determines the highest
frequency at which the subwoofer reproduces sounds. If your main
speakers can comfortably reproduce some low-frequency sounds,
set this control to a lower frequency setting, between 50Hz
and 100Hz.This will concentrate the subwoofer’s efforts on the
ultradeep bass sounds required by today’s films and music. If you
are using smaller bookshelf speakers that do not extend to the
lower bass frequencies, set the Crossover Adjustment Control to
a higher setting, between 120Hz and 150Hz.