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1. UNIPOLAR MODE
Unipolar mode (button lit green) is designed
for unipolar control voltages commonly
found in envelope generators. In this mode,
the attenuator knob controls offsets to the
incoming CV, allowing the dynamic response
to CV to be retained regardless of attenua-
tor position (fig. 4a, 4b). With attenuators
at maximum, a CV of 8V opens the channels
to 0dB, while closing the attenuators allows
silencing the channels to -85dB. Control
2
voltages above 8V are well-tolerated, how-
ever, the gain response is strongly tempered
above 0dB, offering only up to +3dB so as to
minimize distortion. This behavior affects
the sound in a way similar to dynamic com-
pression, however lowering the attenuators
diminishes the effect, eventually bringing it
5
down to a non-compressed operation.
2. BIPOLAR MODE
Bipolar mode (button lit red) is designed for
7
bipolar control voltages commonly found in
LFOs. In this mode, the attenuators act by
scaling the CV together with an internally
generated offset voltage. Therefore the depth
9
of amplitude modulation (in dB) decreases
as the channel is lowered. The response is
optimized for control voltage in the range of
-5V to +5V, whereby a fully-open attenuator
offers 0dB at +5V and turning it fully coun-
terclockwise yields an attenuation of -56dB
with no modulation (see fig. 5a, 5b). Again,
higher amplitudes of the CV are well-toler-
ated, however, the response is strongly com-
pressed above 0dB.
4
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