User Manual

into the bass frequencies. Do this by setting Channel A’s polarity switch to -/+ , then turning the
corresponding attenuator knob counterclockwise past 12:00. Because nothing is plugged into
Quadratt’s OUT A , OUT B contains a sum of Channels A and B, giving you both the reduced
note range and the lower frequencies you desire.
● CV Mixing : What if you want to modulate some parameter with more than one control voltage at
a time? Perhaps you want to send a square wave to modulate a filter’s cutoff frequency giving it
a steady “pulsing” sound while simultaneously sweeping it with a slow, triangular LFO so that
the pulsing sound rises and falls over time. Again, Quadratt is on the case. And, once again,
you’ll be using two channels.
Plug the square wave output of the “pulsing” LFO into Quadratt’s IN A and connect OUT B to
your filter’s frequency CV input. Use Channel A’s attenuverter to set the amount of pulse you
want to hear. Next, plug the triangle wave output of the “slow sweeping” LFO into Quadratt’s
IN B . OUT B now contains of sum of Quadratt’s A and B channels. Use Channel B’s
attenuverter to set how much the pulse sweeps up and down the frequency band. You now have
two different CV sources controlling one destination.
● Audio Mixing : Audio is a voltage too. So you’re probably asking yourself, “can I use Quadratt to
mix multiple channels of audio together as well?” Yes, you can!
Set all of Quadratt’s polarity switches to UNI and turn all its knobs fully counterclockwise . Plug
the output of one oscillator in IN A , another into IN B , and so on. Plug only OUT D into your
audio amplifier, leaving OUTS A-C unconnected. Rotate Channel A’s attenuator clockwise and
you’ll hear the oscillator connected to IN A . Turn Channel B, C and D’s attenuators clockwise to
add their corresponding inputs to the mix.
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Quadratt 1U Manual 7