Mackie DL806 Reference Guide - Page 59
Modern EQ HPF On / Off and Frequency, High-Pass Filter Engaged
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Mackie DL806 and DL1608 Reference Guide Modern EQ HPF On / Off and Frequency High-pass filters are utilized to cut out low frequencies. The high-pass filter control adjusts the cut-off frequency for the filter. Frequencies below the cut-off frequency are attenuated at a rate of 12 dB/octave. The slope for the HPF is adjustable by sliding the HPF ball or HPF slider left and right. Simply tap the HPF button - near the lower-left corner of the screen - to engage the high-pass filter. It will illuminate green when engaged and is gray when disengaged. Gain (+) Frequency (-) Gain (-) High-Pass Filter Cut-Off Point High-Pass Filter (Engaged) Gain (+) Frequency (+) Frequency (-) Gain (-) High-Pass Filter Cut-Off Point Frequency (+) High-Pass Filter (Disengaged) 59