MATRIXSYNTH: Introducing the New Dave Smith Instruments Sequential Prophet-6

Thursday, January 22, 2015

Introducing the New Dave Smith Instruments Sequential Prophet-6


Published on Jan 22, 2015 Dave Smith Instruments

Note the new Sequential branding and site vs. DSI or Sequential Circuits. Maybe they were afraid KORG would grab it. ;) SequentialCircuits.com appears to be owned by a fan site. There is Prophet-6 page at DSI as well.

Update: regarding the Sequential name: "In an unprecedented gesture of good will, Yamaha Corporation and its President, Takuya Nakata, have granted possession of the Sequential brand back to its original owner and company founder, Dave Smith. “To say that I’m grateful would be putting it mildly,” said Smith. “Generosity at this level is almost unheard of in today’s corporate climate.”

Video Description:

"Sequential is back! 100% analog signal path with discrete voltage controlled oscillators, filters, and amplifiers. More info at www.sequential.com

Vintage with a Modern Twist

The Prophet-6 is Dave Smith's tribute to the poly synth that started it all—the Sequential Prophet-5. But it’s not simply a reissue of a classic. Rather, as Dave puts it, “It’s the result of our effort to build the most awesome-sounding, modern analog poly synth possible.” The Prophet-6 takes the best qualities of the original Prophet-5—true voltage-controlled oscillators, filters, and amplifiers—and adds enhancements such as studio-quality effects, a polyphonic sequencer, an arpeggiator, and more. The result is pure, unadulterated analog tone with the stability and reliability of a state-of-the-art modern synth.

Classic Tone, Classic Vibe

Central to the warm, punchy sound of the Prophet-6 are its two newly-designed, discrete voltage-controlled oscillators (plus sub-oscillator) per voice. Continuously variable waveshapes provide the tonal palette with triangle, sawtooth, and variable-width pulse waves. There are two discrete filters per voice—a four-pole, resonant, low-pass inspired by the original Prophet-5 filter, and a two-pole, resonant, high-pass filter. Voltage-controlled amplifiers complete the all-analog signal path.

Dual Effects

The dual effects section provides studio-quality reverbs, delays (standard and BBD), chorus and phase shifter. While the effects themselves are digital, with 24-bit, 48 kHz resolution, a true bypass maintains a full analog signal path. There's also an independent stereo distortion effect, which is 100% analog.

Poly Mod and Poly Step Sequencing

Also present from its classic predecessor is a Poly Mod section, with enhancements. True to the original, modulation sources are filter envelope and oscillator 2 (both with bi-polar control). Destinations include oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, low-pass filter cutoff, and high-pass filter cutoff. Another welcome reprise is Unison mode, which features configurable voice count (1-6 voices) and key modes. The polyphonic step sequencer allows up to 64 steps and up to 6 notes per step. You can create sequences polyphonically, with rests and sync to an external MIDI clock. The full-featured arpeggiator can be synced to external MIDI clock as well.

Easy to Program

The knob-per-function front panel offers instant access to virtually all Prophet-6 functions. Included are 500 permanent factory programs in 10 banks of 100 programs. In addition to these, you can create and save up to 500 user programs of your own. Toggling off the Preset button enables live panel mode, in which the sound of the Prophet-6 switches to the current settings of its knobs and switches. In this state, what you see is what you hear.

Easy to Play

All of this awe-inspiring sound is packed into a four octave, semi-weighted keyboard with velocity and channel aftertouch that's an ideal combination portability and power for the project studio or the gigging musician.

Special thanks to Peter Dyer! www.peterdyer.net"


Specs

OSCILLATORS
Continuously variable wave shape (triangle, sawtooth, pulse, square) per oscillator
Pulse width per oscillator
Hard sync: oscillator 1 syncs to oscillator 2
Triangle sub-octave generator (oscillator 1) per voice
Low frequency mode (oscillator 2)
Keyboard tracking on/off (oscillator 2)
Oscillator slop amount for increased tuning instability, from subtle to extreme

MIXER
Oscillator 1 amount
Oscillator 1 sub-octave amount
Oscillator 2 amount
White noise amount

HIGH-PASS FILTER
2-pole, resonant, high-pass filter per voice
Bi-polar filter envelope amount
Velocity modulation of envelope amount
Keyboard tracking: off, half, full


LOW-PASS FILTER
Four-pole, resonant, low-pass filter per voice, inspired by the original Prophet-5 filter
Filter can be driven into self-oscillation with the Resonance control
Bi-polar filter envelope amount
Velocity modulation of envelope amount
Keyboard tracking: off, half, full

POLY MOD
Sources: filter envelope (bi-polar) and oscillator 2 (bi-polar)
Destinations: oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, low-pass filter cutoff, high-pass filter cutoff

EFFECTS
Stereo analog distortion
Dual, 24-bit, 48 kHz digital effects, including: reverb (room, hall, plate, spring), delay (full bandwidth digital delay and emulated bucket brigade and tape delays), chorus, and phase shifter
Delay sync
True bypass maintains fully analog signal path when digital effects are off

SEQUENCER
Polyphonic step sequencer with up to 64 steps and rests

PATCH MEMORY
500 user and 500 factory programs in 10 banks of 100 programs each
Direct program access, including Prophet-5 style single-button access to the current set of 10 programs

PERFORMANCE CONTROLS
Full-sized, semi-weighted, 4-octave keyboard with velocity and aftertouch
Backlit pitch and mod wheels
Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down)
Transpose controls for an 8-octave range
Hold switch latches held notes on
Polyphonic glide (portamento)
Unison (monophonic) mode with configurable voice count, from one to all six voices, and key modes
Preset switch: when off, the front panel is live; what you see is what you hear

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