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 subtractive analog sound synthesis foundation 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.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!Potentiometer Potential Seven attenuation pots control the FREQUENCY, RESONANCE, FREQ CV 1, RESO CV, FREQ CV 2, INPUT and OUTPUT, delivering smooth, detailed, and complex expression.Switch it Up Classic Minimoog FULL and HALF strength filter frequency keyboard/voltage tracking for rounder low end with brilliant highs.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.All Controls & Patch Points FREQUENCY - Adjusts the frequency, or cut-off of the filter. RESONANCE - Adjusts the resonance of the filter. * FULL HALF TRACK - Switch between full and half keyboard/voltage tracking. FREQ CV 1 - Frequency control voltage 1 input attenuverters. RESO CV - Resonance control voltage input attenuverters. FREQ CV 2 - Frequency control voltage 2 input attenuverters. INPUT - Adjusts the audio input. OUTPUT - Adjusts the audio output. 1 V/O - One volt per octave control voltage input. FREQ CV 1 - Frequency control voltage 1 input. FREQ CV 2 - Frequency control voltage 2 input. RESO CV - Resonance control voltage input. INPUT - Audio input. 2x OUTPUT - Audio outputs.* From 7:00 (0) to 9:00 our Negative Resonance Saturation adds beefiness, boosting the waveform amplitude and taming waveform transients; set to 9:00 to achieve the cleanest tone possible.
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