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Noisebug (RSS)
"The a-100 basic system 2 is a portable true analog modular synthesizer. This modular system is capable of creating basslines, leads, pads, percussion and effects plus filter processing. The Midi module makes this system compatible with keyboards, sequencers and computers.
The voltage-controlled oscillators have a solid frequency range of eight octaves. It can produce four waveforms simultaneously: square, sawtooth, triangle, and sine wave. The frequency or pitch of the vco is determined by the position of the octave (range) switch and tuning (tune) knob, and by the voltage present at the cv inputs. Frequency modulation (fm) of the vco is therefore a possibility. Footage (the octave of the fundamental) is set by the range control, and fine tuning controlled by the tune knob.
Also included is a voltage controlled low-pass filter, which filters out the higher parts of the sound spectrum, and lets lower frequencies pass through. the cut-off frequency determines the point at which filtering takes effect. You can control this manually, or by voltage control (filter modulation, for instance by an lfo). The vcf1 is a "transistor ladder" design, with a cut-off slope of -24 db/octave, as in various moog synthesizers. That's what gives it its classic, legendary moog sound. The filter resonance (or emphasis) is adjustable all the way up to self-oscillation - in which case the filter behaves like a sine wave oscillator.
This system is based on the Eurorack format and is compatible with most of the new eurorack module makers out there along with modular synths and vintage keyboards like Arp, Moog and Oberheim. It is also 100% Portable!
2x standard vco a-110
2x adsr a-140
2 x lfo a-145
1 x a-106-6 16-fold vc xpander filter
1 x ring modulator a-114
1 x audio divider a-115
1 x vc waveform processor a-116
1 x noise/random a-118
1 x vcf1 a-120 (24db low pass 1)
1 x linear vca a-130
1 x logarithmic vca a-131
1 x linear mixer a-138a
1 x logarithmic mixer a-138b
1 x dual s&h a-148
1 x trigger divider a-160
1 x trigger sequencer a-161
1 x dual slew limiter a-170
1 x multiple i a-180
1 x midi interface a-190
20 patch cables (mixed)
A-100 user manual"
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