Filter
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SETUP
SDP-40
3-23
Highpass Filter Lowpass Filter
10 20 50 100 200 500 1k
dB
0
0
-12
-24
-36
-48
0
0
-60
Hz
Highpass filters attenuate low-frequency signals at 24dB per octave.
The curves in the graph above indicate the frequency response of
each crossover point. From left to right, the curves represent
crossover points from 30 to 120Hz. This graph does not include the
THX 80Hz crossover point, which attenuates low-frequency signals
at 12dB per octave.
Lowpass filters attenuate high-frequency signals at 24dB per octave.
The curves in the graph above indicate the frequency response of
each crossover point. From left to right, the curves represent crossover
points from 30 to 120Hz.
. . . Setting Crossover Points continues on page 3-24