Access virus os4 Manual De Usuario
30
CHAPTER
4
Introduction
The reason for this effect is that
when you turn the FILTER BALANCE
pot to the far left, only Filter-1 is
audible. When you rotate the pot
to the right, Filter-2 is blended in so
that it follows Filter-1 in the signal
chain. When you turn the FILTER
BALANCE
when you turn the FILTER BALANCE
pot to the far left, only Filter-1 is
audible. When you rotate the pot
to the right, Filter-2 is blended in so
that it follows Filter-1 in the signal
chain. When you turn the FILTER
BALANCE
pot clockwise, Filter-1 is
blended out of the signal chain
until at the far right position only
Filter-2 is active and audible.
until at the far right position only
Filter-2 is active and audible.
Each filter in the Virus normally
features 2 poles. However in the
FILTER
features 2 poles. However in the
FILTER
ROUTING operating mode
SER 6, Filter-1 operates with 4
poles, so the signal patched
through Filter-1 (FILTER BALANCE to
the far left) is trimmed more dras-
tically than when it is routed
through Filter-2 (FILTER BALANCE to
the far right). When you set the FIL-
TER
poles, so the signal patched
through Filter-1 (FILTER BALANCE to
the far left) is trimmed more dras-
tically than when it is routed
through Filter-2 (FILTER BALANCE to
the far right). When you set the FIL-
TER
BALANCE pot to the center
position (12 o’clock) - as we men-
tioned before - the two filters are
routed in series, which means they
respond as if they were a single fil-
ter with 6 poles and consequently
a great deal of slope. This is why
the input signal is trimmed sub-
stantially when you set the pot to
this position.
tioned before - the two filters are
routed in series, which means they
respond as if they were a single fil-
ter with 6 poles and consequently
a great deal of slope. This is why
the input signal is trimmed sub-
stantially when you set the pot to
this position.
Experiment with the diverse FILTER
BALANCE
BALANCE
positions to get a feel for
the different degrees of slope.
Rotate the CUTOFF pot or activate
the filter envelope (for both fil-
ters!) to hear the filters in action.
Rotate the CUTOFF pot or activate
the filter envelope (for both fil-
ters!) to hear the filters in action.
The CUTOFF 2 pot is a special fea-
ture: It controls the cutoff fre-
quency of the second filter, but is
subordinate to the CUTOFF pot
located above it. In other words, at
the center position (12 o’clock) the
manually selected frequency of Fil-
ter-2 is identical to that of Filter-1.
When you rotate the pot to the left
the cutoff frequency level of Filter-
2 is increased relatively to Filter-1,
when you turn to pot to the right
the cutoff frequency level is
decreased relatively. Now when
you adjust the CUTOFF pot, you
adjust the cutoff frequency of both
filters by the same measure! This
feature lets you determine a differ-
ence in values in the filter frequen-
cies (called an offset) via the
CUTOFF
ture: It controls the cutoff fre-
quency of the second filter, but is
subordinate to the CUTOFF pot
located above it. In other words, at
the center position (12 o’clock) the
manually selected frequency of Fil-
ter-2 is identical to that of Filter-1.
When you rotate the pot to the left
the cutoff frequency level of Filter-
2 is increased relatively to Filter-1,
when you turn to pot to the right
the cutoff frequency level is
decreased relatively. Now when
you adjust the CUTOFF pot, you
adjust the cutoff frequency of both
filters by the same measure! This
feature lets you determine a differ-
ence in values in the filter frequen-
cies (called an offset) via the
CUTOFF
2 pot which remains con-
stant whenever you adjust the
CUTOFF
CUTOFF
pot.