Low and High Filters
The Low filter allows everything above a certain
frequency to pass through, hence it removes very
low frequency signals. Setting the Low filter to a
certain frequency attenuates (reduces the volume
of) all frequencies below that. Similarly, the High fil-
ter removes high frequency signals, so setting the
High filter to a cer tain frequency attenuates all fre-
quencies above that.
Controls
Note that you cannot change the amount of attenuation - setting one of these filters
always attenuates the af fected frequencies by a preset amount of 12 dB per octave.
For example, setting the High filter at 12 kHz attenuates the signal at 24 kHz by 12
dB and the signal at 48 kHz by 24 dB (for any frequency, the octave above it is at
double the frequency).
Off position: For practical purposes, the off position for the Low filter is 10 Hz, and
for the High filter is 30 kHz.
f u n c t i o n s
9
-12dB
