Sturdy steel chassis, 29-31 pots, 2 rotary switches, 18-19 toggle switches—15 three way for expanded functionality—AC power triple output desktop adaptor (15, -15 Volt Auto-Switching Supply). Tried and true through-hole technology—not surface mount—for integrity of sound quality, durability, and serviceability.
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).
All discrete circuity, with the exception of the software LFO. Hand matched transistors in filter and amplifier.
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.
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.
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.
3003—resonant low-pass, diode ladder, 4-pole 24 dB/octave (Roland® TB-303); 4072—resonant low-pass, 4-pole 24 dB/octave—12 kHz design miscalculation corrected—(ARP® 2600); 5089—resonant low-pass, transistor cascade ladder, 4-pole 24 dB/octave (Moog® Model D); 8106—multi-mode non-resonant high-pass, resonant low-pass, 4-pole 24 dB/octave (Roland® Jupiter8); SEM—multi-mode resonant low‑pass/high‑pass, band‑pass and notch, 2-pole 12 dB/octave (Oberheim®); SE80—dual resonant hi-pass/low-pass, 2-pole 12 dB/octave (Yamaha® CS-80).
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.
Oscillator 2 mod depth pot with center off toggle switch to select modulation of oscillator 1 pulse width or oscillator 1 frequency.
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.
Center off toggle switch to select two levels of overdrive; Volume pot.
Master tune pot.
Bend range pot.
Hardware exponential glide time pot.
(routes MIDI keyboard) Dynamics to filter frequency pot.
(routes) Envelope 1 to Oscillator 1 pulse width pot.
Oscillator 1 level pot; Oscillator 2 level pot.
Hardware Ring Modulator level pot.
Noise level pot.
(routes the synth's output back through the filter) Feedback level pot.
CV in, Gate in, Filter frequency modulation in, Amplifier modulation in, Oscillator out, External signal in.
MIDI In, MIDI Out, 1/4" Audio out, Traveller input (SE80 model only), DC power input.
Learn switch: Selects MIDI channel.
For chaining together multiple Boomstars together via MIDI overflow.