Справочник Пользователя для Viper MF-105B

done two ways, depending on the position of the BANK slider 
switch. The switch, located below the PATTERN selector switch is 
labeled BANK A or B/LFO. When the slider is in the “A” position, 
the filters’ center frequencies can be shifted by an expression pedal 
(such as the Moog EP-1) or CV plugged into the LFO/SWEEP 
Jack. 

     To hear how this works, return to the basic setup described in 
Figure 5. Plug a Moog EP-1 into the LFO/SWEEP control input. 

     When the BANK slide switch is in the B/LFO position, an LFO 
(Low Frequency Oscillator) shifts the frequencies of the filters as 
a group up and down automatically. The LFO is a sine wave. The 
rate is determined by the pattern, or an expression pedal (EP-1 or 
equivalent) or CV connected to the LFO/SWEEP jack. 

     To hear the effect of the LFO on the Bass MuRF’s filters, return 
to the basic setup outlined in figure 5, then move the BANK slider 
switch to “B/LFO”. Now as you play through the Bass MuRF, 
you’ll hear the filters swept up and down automatically. To change 
the speed of the LFO, plug a Moog EP-1 expression pedal into 
the LFO/SWEEP Control Input. The EP-1 can now slow down or 
speed up the LFO.  

Then, as you play 
into the Bass 
MuRF, rock the 
EP-1 back and 
forth. You will 
hear the filters’ 
frequencies shift 
with the motion of 
the pedal.