AM8044 Cascade VCF & VCA
AMSynths
Page 6
4
Connections & Controls
The two uppermost jack sockets INA and INB are for
connecting audio signals into the input side of the filter,
these signals are mixed together. The level of each audio
signal can be varied from nil to maximum using the front
panel rotary potentiometers Signal A and Signal B.
The next jack socket Env is for connecting a modulation
control voltage to modify the volume of the module.
The middle jack sockets CV1 and CV2 are for connecting
modulation control voltages into the filter. These signals
vary the cut off frequency of the filter, with the front panel
rotary potentiometers adjusting the amount of modulation.
The lowest jack socket marked Out is the audio signal
output of the filter and it is typically connected to a VCA.
The Frequency potentiometer varies the cut off frequency
of the filter. At the minimum setting the filter will cut off all
frequencies with no audio output and at the maximum
setting the filter will pass all frequencies.
The Key Track potentiometer adjusts the amount by which
the keyboard note value control voltage on the internal
Doepfer bus controls frequency cut-off. This enables
brighter sounds as higher notes are played.
The Resonance potentiometer adjusts the resonant peak of
the filter from a minimum setting of no resonance, through
subtle resonance enhancement to a maximum setting when
the filter will break into self oscillation.
The Gain/Env potentiometer adjusts either the VCA gain or
when a jack is inserted into Env socket, it controls the
amount the CV signal varies the level of the VCA.
