Page 2
Boomstar Modular combines a set of individual modules to create a complete instrument. The individual modules can be rearranged, removed, and replaced with any compatible eurorack modules from Studio Electronics and other manufacturers. Boomstar Modular uses a standard eurorack power rail to connect the modules to the internal bipolar +/-12v power supply. Please pay very close attention to the orientation of the ribbon cable when adding and removing modules.
C2S, PRE 2, and SLATE PRO AUDIO DRAGON and FOX to market, and the air waves worldwide. Our Boomstar Modular System’s (Modstar) 5089 circuit mirrors faithfully the filter design from the Minimoog—it is not a style; it’s not a type, not reminiscent of, not vintage inspired—it is the analog sound standard manufactured anew, and how we love it so.
Modular Signal Paths (Copy courtesy of Pittsburgh Modular) The BOOMSTAR MODULAR’S signal path is divided into two types of signals: audio signals and control voltages. The audio signal is the sound that is produced. The audio signal path starts at a sound source such as a Waveforms oscillator, LFO running at audio rate, or the Filter in oscillator mode.
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,”...
Page 13
5089 Filter Module - 2 All Controls and Patch Points FREQUENCY – Adjusts the frequency, or cut-off of the filter. RESONANCE – Adjusts the resonance, or “Q” of the filter. * FULL HALF TRACK – Switch between full and half keyboard/voltage tracking. FREQ CV 1 – Frequency control voltage 1 input attenuverter. RESO CV –...
Page 14
4075 Filter Module Description The 4075 filter is a voltage controlled, discrete analog, 24/db/oct cascaded transconductance low-pass filter, employing hand- matched transistors. In its lowest FREQUENCY setting it shaves off higher frequency harmonics; its RESONANCE or “Q” circuit pushes those harmonics past the self-oscillation boiling point, projecting a thumpy, thrashing squeal, with explosive low to mid-range power and depth.
Page 15
4075 Filter Module - 2 All Controls and Patch Points FREQUENCY – Adjusts the frequency, or cut-off of the filter. RESONANCE – Adjusts the resonance, or “Q” of the filter. * FULL HALF TRACK – Switch between full and half keyboard/voltage tracking. FREQ CV 1 – Frequency control voltage 1 input attenuverter. RESO CV –...
Page 16
Our 3003 filter has the most gentle sonic touch of its partners in the Boomstar fold, but nevertheless is quite capable of shaping precise, very dynamic tone. Whether or not this STUDIO ELECTRONICS filter is filling its traditional baseline boxing niche, driving a harsh, liquid, acid-like tone, a softer more rubber-bandy SH-101-ish presence, or out of the bass range altogether, leading the way, all is within easy reach of this surprisingly warm and versatile VCF .
Page 17
3003 Filter Module - 2 All Controls and 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 attenuverter. RESO CV –...
Page 18
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. 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.
Page 19
SEM Filter Module - 2 All Controls and 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 attenuverter. RESO CV –...
Page 20
AMP Module Description From Designer Tim Caswell’s own hand: The amplifier (AMP) is a 2 stage Class A discrete design using three pairs of hand matched transistors. Envelope is usually applied to ST1 CV1; ST1 CV2 goes thru an attenuverter and can be used for envelope or modulation; ST2 CV1 goes to the 2nd stage, and is typically used for volume control;...
Page 21
AMP Module All Controls and Patch Points INPUT – Adjusts the audio input. ST1 CV2 (formerly STAGE 1/2) – Adjusts stage 1, control voltage 2 (CV). ST2 CV2 (formerly STAGE 2/2) – Adjusts stage 2, control voltage 2 (CV). DRONE – Sustains the last note received—“Hold that Train.” DRIVE –...
Page 22
OSCILLATION Module Description Tim Caswell unplugged: “Another hybrid, utilizing an exponential current source similar the the ones from ARP and Oberheim, followed by wave shaping circuits adapted from the 2nd generation MiniMoog oscillator board, and incorporating waveform mixing circuits pioneered by SE. This provides a large variety of tones that would otherwise require several patch cords and an external mixer.
Page 23
OSCILLATION Module - 2 Patch It Up Six patch points: INPUT, ST1 CV1, ST1 CV2, ST2 CV1, ST2 CV2, OUTPUT direct the deepest manipulation. All Controls and Patch Points INPUT FREQUENCY – Oscillator frequency attenuator. NORMAL / LOW RANGE – Oscillator domain switch. TUNE – Oscillator fine-tune attenuverter.
Page 24
OSCILLATION Module - 3 SUB OUT – Sub Oscillator output. SINE OUT – Sine Oscillator output. TRI OUT – Triangle wave output. SAW OUT – Sawtooth wave output. RAMP OUT – Ramp (reverse sawtooth) wave output. SQR OUT – Square wave output.
Page 25
GRAINY CLAMP-IT is a granular and phase modulated additive oscillator—brand new heavy territory for Studio Electronics... we know; wait till you hear the stunning contrast it creates when paired with our discrete Class-A OSCILLATION module, and the inorganic to downright 1970's combo organy / CS-80-ish tones it can generate.
Page 26
GRAINY CLAMP-IT - 2 Patch It Up Five patch points: 1V/OCT, L/P CV, OMX CV, S/A CV, OUTPUT. All Controls— arranged in order of signal flow —and Patch Points WAVE TYPE – Selects one of 16 source waveforms. OT TYPE – Combines 4 copies of the Wave Type – selects one of 16 variations of four overtones. OT MIX – Controls the mix of the four overtones, from lowest pitched to highest pitched dominance.
Page 27
GRAINY CLAMP-IT - 3 FIX – Up: the pitch control of Len/Pitch is continuous; Down: Len/Pitch selects a range of fixed pitches. RANGE – Up: PD sample window is long, for wave sequencing; Down: PD sample window is short, for detune effects.
ANALOGIA INC./STUDIO ELECTRONICS warrants to the first owner of a covered product purchased directly from ANALOGIA INC./STUDIO ELECTRONICS, or an authorized ANALOGIA INC./STUDIO ELECTRONICS dealer in the U.S., that this product will be free from defects in materials and or workmanship for a period of one year from the date of purchase.
Page 29
WITHOUT LIMITATION, LOSS OF USE, PROFITS, GOODWILL OR SAVINGS OR LOSS OF DATA, MUSIC, ELECTRONIC FILES, OR PREFERENCES THAT MAY HAVE BEEN STORED BY A USER OF THE PRODUCT, EVEN IF ANALOGIA INC./ STUDIO ELECTRONICS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR CLAIMS.
Need help?
Do you have a question about the MODSTAR and is the answer not in the manual?
Questions and answers