Moog mf105b ユーザーズマニュアル

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The Bass MuRF’s FILTERS 
    The Bass MuRF’s seven resonant filters have fixed center 
frequencies and a shelving(lowpass) filter that has a fixed cutoff 
frequency. These frequencies are shown on the legend underneath 
the filters’ sliders. Their frequencies are: 110 Hz(shelving filter), 
160 Hz, 240 Hz, 350 Hz, 525 Hz, 775 Hz, 1.2K and 1.8K. 
    Each filter has a slider that adjusts the gain of that filter. In this 
respect, the Bass MuRF resembles a graphic equalizer. When a 
filter’s slider is all the way down, the gain for that filter is zero, 
and the filter’s output is zero. When the slider is all the way up, 
the filter’s output is maximized. The resemblance to a graphic EQ 
ends there. The Bass MuRF’s filters have a characteristic that sets 
them far apart from a graphic equalizer.  A graphic equalizer will 
theoretically not color the signal at all when all the sliders are set 
to the same level. The Bass MuRF’s resonant filters and shelving 
filter on the other hand color the signal a great deal, adding warm 
analog resonances at pleasing intervals through out the frequency 
spectrum of a bass instrument. We’ll now show how the Bass 
MuRF’s filters affect your MF-105B frequency response. We will 
always start with this ‘basic’ panel setup, which is:
1) Set each of the filters’ 
sliders to all the way up.
2) Switch the PATTERN to 
Bank A, Pattern 1. Pattern 1 
turns off the Animation so you 
can hear the effect of 
just the 
filters.
Figure 5 - Basic Settings for checking out the 
filters.