![]() ![]() ![]() ![]() The Six-Trak uses parameter access programming via a single data knob and a single two-digit LED display. Without a computer, programming is a bit of a chore. Available waveforms for the LFO are square and triangle with controls for amount and frequency. The LFO can be routed to the VCO, the VCR, and pulse width modulation. Both the VCF's and the VCO's ADSRs can be inverted. In each voice the VCO, VCF, and VCA have their own ADSR envelope generators with variable envelope amounts. The filter is self-resonating and can be modulated by the oscillator. Keyfollow modulation can be set to off, half, or full keyboard. The filter section features controls for the cut-off frequency, and resonance. Each oscillator can be mixed with the noise generator. The VCO has coarse and fine tuning, glide (portamento), and available sawtooth, triangle, and pulse (with pulse width modulation) waveforms. It is also syncable to an external source.Įach voice consists of a single Curtis 3394 chip, which basically contains the entire synth engine (one VCO, a VCF, a VCA, and an LFO) except for the ADSR envelope generators. Also available was a built-in 800 note sequencer consisting of two multitimbral Six-Trak sequences with individual volume controls. Each voice can be programmed to any of 100 internal patches and played (via an external sequencer or external keyboard controller) as a separate monophonic synth. Some say that the SixTrak was the first multitimbral MIDI synth to respond to multiple MIDI channels. The Six-Trak was also designed as a MIDI instrument. Sequential marketed the Six-Trak and its software with their Drumtraks drum machine as a complete MIDI system. The software allowed you to program the voices and the sequencer. Software was available for the Commodore 64 computer, then a very popular home personal computer. It was one of the first multitimbral MIDI instruments designed to be used with a computer. The Six-Trak is a 6-voice, polyphonic, multitimbral, programmable analog synthesizer with MIDI, a squencer, an arpeggiator, and a 4-octave, 49-note (C-C) keyboard. Image courtesy of the archives at Hyperreal Information on the Six-Trak's MIDI implementation, Search the Classifieds for this instrument. (remote controller keyboard for the Prophet-5) Six-Trak Split-8 Prophet-3000 Prophet-T8 Prophet-VS Remote Pro-8 PRO-FX Pro-One Prophet-5 Prophet-10 Prophet-600 Sequential Circuits Instruments Drumtraks Fugue Max Multi-Trak Model 800 Home Site Map About Us Contact Us Support Us ![]()
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