Driven by rapid fire hardware envelope snap, and near Modular sound flexibility (at the flip of any of its 20 toggle switches), the Studio Electronics Boomstar® SEM Desktop synth is a performer and sound designer's waking dream. The Boomstar foundation: two Oscillators—stackable waveforms with Sub OSC, two Envelopes—invertible, loopable, with drone and master modes, is accented expressively by hardware XMod and exponential glide, extensive modulation routing.
A flexible software LFO: jacked for heavy lifting and fine-tuned experimentation—even go "off synth" with the external input and color exotic oscillations.nThe synth is capable of many sounds, from mighty leads to thick basses, crazy FM sounds to cutting sync sounds.
VCO1 has a six-position octave switch (from LO to 2´), sync, pulse width modualtion and a sub-oscillator. Up to two wave forms can be mixed with the wave-mix switches: triangle/sawtooth or sine/pulse. VCO2 can be removed from the keyboard tracking, has six octave ranges, switchable wave forms (saw, triangle and pulse), a detune control and a control for modulation intensity with Env1 or Env2 as selectable modulation source. Cross modulation of VCO2 to pulse width or frequency of VCO1 is available, too.
The oscillators, the ring modulator and the noise are mixed in the mixer section at the bottom where you´ll find also the lovely feedback control and en external audio input.
The filter is a resonant Oberheim SEM 12dB low pass filter with keyboard tracking (0%, 50% or 100%). Besides the modulation intensity control for Env1 there´s also a modulation control for VCO2 or the LFO as source.
The first ADSR type envelope is assigned to the filter. It can be inverted and even looped. The second ADSR also offers an inverting function, additionally triggering by the LFO and different keyboard trigger modes. In the DRONE position of the master switch the VCA stays open what makes filtering external sounds possible without constantly pressing a key.
The LFO can be synched to the MIDI clock if desired, offers nine wave forms and can e assigned to the pulse widths or frequencies of the VCOs.
The VCA is being modulated by the 2nd envelope, has a volume control and two overdrive modes. in the lowest section left of the mixer you´ll find additional tiny controls for main tune, pitch bend intensity, glide time, dynamics and modulation intensity of Env1 to VCO1´s PWM.
back: power inlet (6 pin DIN), MIDI In and Out (5-pin DIN), Audio output (6.35mm = 1/4" socket)
front: frequency CV input, gate input, fliter cutoff CV input, VCA CV input, oscillator output, external audio input (all 3.5mm sockets)
Studio Electronicnic's Boomstar systems include: patchable, discrete, through-hole, hand-matched transistor, American-made analog synthesizers are as rugged as they are flexible; inspiring instruments built to last a lifetime, and then some, no matter which brilliant, hand-crafted filter model you choose.