Studio Electronics BOOMSTAR SEM Classic Analog Oberheim 12db Clone Module
SPECIFICATIONS & FUNCTIONS
Construction
Sturdy steel chassis, 31 pots, 2 rotary switches, 18 toggle switches––15 three way for expanded functionality, through hole circuit boards, AC power adaptor.
Dimensions
Height: 2.05" (52.07 mm) at front, 3.625" (92.075 mm) at back, Width: 8.7 " (220.98 mm), Depth: 7.05" (179.07 mm).
Sound Generation
All discrete circuity. Hand matched transistors in filter and amplifier.
Oscillator 1
6 position rotary range switch; Two center off toggle switches select combinations of sine, triangle, saw and square waveforms; Pulse width for square waveform; Sub oscillator with center off toggle switch for half and full level positions; Sync oscillator 2 to oscillator 1 switch.
Oscillator 2
6 position rotary range switch; Three position toggle switch to select triangle, saw or square waveform; Fine tune pot; Mod depth pot with center off toggle switch to select modulation by envelope 1 or 2; Keyboard tracking on-off switch.
Filter / Envelope 1
Frequency and resonance pots; Center off toggle switch to select half and full keyboard tracking; Envelope mod depth pot; Additional mod depth pot with center off toggle to select modulation by oscillator 2 or the LFO. Envelope 1: Attack, decay, sustain, and release pots; Center off toggle switch to select envelope invert or envelope loop.
Filter Types
4075-classic Arp 2600, 5089-classic Moog® 24db ladder, SEM-classic Oberheim® 12db (full function, with LP to HP mix control), 303-classic Roland® TB.
Envelope 2
Attack, decay, sustain, and release pots; Center off toggle switch to select envelope invert or LFO gate trigger; Single or multiple triggering switch; Center off toggle switch to select drone and envelope 1 as master. With master selected, envelope 2 is the modulator for both the amplifier and filter frequency. Envelope 1 remains active for oscillator 2 frequency and oscillator 1 pulse width modulation.
XMod
Oscillator 2 mod depth pot with center off toggle switch to select modulation of oscillator 1 pulse width or oscillator 1 frequency.
LFO
Rate pot; Midi sync on-off switch; Waveform pot––sine, triangle, saw up, saw down, square, offset square 1 and 2, random and slew random waveforms; Mod depth pot with center off toggle switch to select oscillator 1 frequency or oscillator 1 pulse width; Mod depth pot with center off toggle switch to select oscillator 2 frequency or oscillator 2 pulse width.
Amplifier
Center off toggle switch to select two levels of overdrive; Volume pot.
Additional
Master tune pot; Bend range pot; Glide time pot: Dynamics to filter frequency pot; Envelope 1 to oscillator 1 pulse width pot.
Mixer
Oscillator 1 level pot; Oscillator 2 level pot; Ring Modulator level pot; Noise level pot; Feedback pot.
Front Panel Jacks
CV in, Gate in; Filter frequency modulation in; Amplifier modulation in; Oscillator out; External signal in.
Back Panel Jacks
Midi In, Midi Out, 1/4" Audio out, DC power input.
Back Panel Switches
Learn switch: Select midi channel, note priority, aftertouch and mod wheel assignment; Tap tempo for LFO.
Overflow Switch
For polyphonic "Boom-Starring."