Inter-m L-1400 Operating Manual page 9

PROFESSIONAL POWER AMPLIFIER
7. HIGH PASS FILTER SWITCH
Select the switch position that is best suited for your application. The OFF position allows full frequency
range signals to reach the loudspeakers. The 30Hz position reduces the signal amplitude below 30 Hz
to conserve power and help protect the loudspeakers. The 50Hz position reduces the signal amplitude
below 50 Hz to conserve power and help protect the loudspeakers.
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L800/1400/1800/2400