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Table Of Contents
212 Chapter 20 ES2
Filter Blend and Signal Flow
No matter whether parallel or series filter configurations are chosen, a Filter Blend
setting of –1 results in only Filter 1 being audible. A Filter Blend setting of +1 will limit
audibility to Filter 2. This is reflected in the user interface.
In conjunction with the overdrive/distortion circuit (Drive) and a series cabling
configuration, the ES2’s signal flow is far from commonplace. The graphics illustrate the
signal flow between the Oscillator Mix stage (the Triangle) and the dynamic stage,
which is always controlled by ENV 3. The signal flow through the filters, the overdrives
and the sidechains is dependent on the Filter Blend setting.
Filter Blend and Series Filter Configuration Tips
 With positive values for Filter Blend, Filter 1 is partially bypassed.
 With negative values for Filter Blend, Filter 2 (the lowpass) is partially bypassed.
 At zero and positive values for Filter Blend, there is only one overdrive circuit for both
filters.
 With negative values, another overdrive circuit is introduced, distorting the output
signal of the Oscillator Mix stage before it is fed into the first filter—where Filter
Blend = –1.
Note: If Drive is set to 0, no distortion occurs.
Mix
Filter 1
Drive
Filter 2
Filter Blend in parallel filter mode.
Filter 1
Filter 1
Filter 1
Drive
Drive
Drive
Drive
Drive
Filter 1
Filter 1
Filter 2
Filter 2
Filter 2
Drive
Drive
Filter 2
Filter 2
+1:
–0,5:
+0,5:
–1:
0:
Filter Blend in series filter mode. Between 0 and –1 two distortion
circuits are active—one pre each filter. Filter Blend cross-fades up to
three bypassing lines simultaneously.