User manual

SEM Filter Module
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Description
Sensei Caswell: "Our SEM is known as a "Voltage Controlled State Variable Filter" because it provides simultaneous high pass,
low pass, and band pass outputs, all with a 12 dB/oct slope. The notch is the inverse of the bandpass, achieved by summing
the Low Pass and high pass outputs. This version is a combination of the original SEM filter and the newer design from the
OBX, along with improvements by Studio Electronics. It has a modest current draw, which it pulls evenly from the plus and
minus rails."
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If you've heard the SEM filter in our Boomstar desktop (https://soundcloud.com/studio-electronics/sets/mean-sem-ranch/)
you also know that this 12 dB favorite is “… capable of lighter, more subtle tones than the other three models. This isn't to
suggest the filter's Low Pass mode can't cater for fat and punchy, because it can." - Paul Nagle, Sound on Sound. Deeply
gratifying tonal variance and this emotional warmth https://soundcloud.com/alanc3-1/switched-on-sem—our friend Fred
Falke's favorite—can reach into your head and heart, and stay as long as desired. Thank you Lord Tom Oberheim for this
marvelous design/template from which we were able to work our very own Studio Electronics eurorack filter enchantments.
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Potentiometer Potential
Three attenuverter and four attenuation pots control the FREQUENCY, RESONANCE, FREQ CV 1, RESO CV, LP HP, INPUT and
OUTPUT, delivering smooth, detailed, and ever variable expression.
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Switch It Up
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FULL and HALF strength filter frequency keyboard/voltage tracking, and BP / LP-HP modes.!
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