User manual

5089 Filter Module
Description
The 5089 filter is a voltage controlled, discrete analog, 24 db/oct transistor ladder, low-pass filter, employing hand-matched
transistors. Our ladder low-pass filter—a subtractive analog sound synthesis foundation—in its lowest FREQUENCY setting
removes, or cuts off higher frequency harmonics; its RESONANCE or Q circuit emphasizes those harmonics to the point of
“squealy,” giddy self-oscillation, tracking the keyboard in its FULL setting quite nicely if seeking an alternative sine wave.
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Our 5089 has the roundest, slickest tone of all the Boomstar’s filters. Go easy on it, and round, creamy buttery flavors wrap
the oscillators in earthy warmth; smash it and a!meaty, satisfying overdrive, and a maximum harvest of vintage 1960s and
1970s organic-sounding, second-order harmonic distortion fill the plate. Every setting is balanced and bountiful. Looking for
traditional R ’n B baselines and leads? Focus here on the rich saturation of this benchmark filter and its symmetrical cascades
of generation-stretching timbres. All BOOMSTAR MODULAR filters are hand-built in the U. S. Pick-and-Place all the way!
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Potentiometer Potential
Three attenuverter and four attenuation pots control the FREQUENCY, RESONANCE, FREQ CV 1, RESO CV, FREQ CV 2, INPUT
and OUTPUT, delivering smooth, detailed, and complex expression.
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Switch It Up
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Classic Minimoog FULL and HALF strength filter frequency keyboard/voltage tracking for rounder low end with brilliant highs.
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Patch It Up
Seven patch points: 1 V/O, FREQ CV 1, FREQ CV 2, RESO CV, INPUT and 2x OUTPUT direct the deepest manipulation.!
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