Din Sync SARA VCF Manual - Página 5
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NOT JUST ANOTHER FILTER
when approaching the SARA VCF, it's best not to think of it as just another filter, or two filters in
one. The design philosophy was to create a musical tool that would reward the user with time
and effort. Take some time to explore the possibilities with external cv control, theres some
weird shit in there I can tell you.
Most filters are pretty easy to operate, however SARA VCF has a few things to note.
The default routing is to plug a signal into core 1 input and take the output from core 2 notch, in
this setup core 1 notch output is normalised to core 2 input and both cores are "opposed"
That's to say when core 1 is set to low pass (via the state control) core 2 will be high pass, and
vice versa.
When first using the notch modes its very easy to filter everything, resulting in no sound at all!! If
this happens take a moment to check the positions of the frequency knobs, rotating them
opposite (or the state) usually fixes things.
Single core outputs will be inverted, this is to say that when using the cores as single filters the
outputs are inverted. If the signal passes through both cores it will of course not be inverted any
longer.
When you have a control voltage connected to the Q or STATE cv inputs the knobs become
attenuators. (this is not the case with the frequency knobs)
The input/output ratio for both cores is slightly different, core 2 is more dampened since its
considered the output stage and so is tamed a little. In use this will mean the output of core 1 is
louder. If you want the best possible single filter response then core 1 should be used as it has
roughly a 1:1 input/output ratio.
The center frequency of each core can be adjusted to your taste, they have been adjusted to
give an optimal range for the cutoff knobs. However this means that the filters will bleed slightly in
low pass mode with the cutoff at zero. You can find more information about the adjustments in
the calibration section of the manual.
wow you read this far? I'm impressed. That's probably pretty much all you need to get started
and if you didn't just jump in already, read on for a little more detail. Or skip forward to find some
weird patches to try out for yourself!