Page History

Hi all, this is the place to find the latest building documents for Black Corporation's Deckard's Dream polyphonic synthesizer.

Currently, this project is at rev 1.0, PCB's are currently being released to builders. (18.Oct. 2017) and are being constructed.

A new PCB version rev. 2.1 is planned and the release is planned for July 2018, this page is only for rev.2.x

Product Info:

the Deckard's Dream product is available as Build to order and DIY KIT Version, both released in 2017.

Its also known or coined as the "DDRM".

The difference in the DIY KIT and assembled (Build to order) are:

• the component format, the DIY KIT is mostly THT, the build to order synth is mostly in SMT.
• The case size is not as deep for the build to order as it is for the DIY.

Note: Although the DIY has most of the SMT devices pre-installed onto the PCBs, there are over 675 SMT decoupling capacitors (0805) and one small (SOIC8) power switch device that MUST be installed by the builder, in addition to the through hole components

A addional 1U expander is planned - release in 2018

Examples of Presets and voices: https://soundcloud.com/deckardsdream

Synthesizer features

• 8-voice polyphonic analogue synthesizer
• Fully analogue signal path
• 2 synthesis layers per voice
• 256 presets

Layer architecture

• VCO with square, saw and sine waveforms
• PWM with sine-wave LFO
• Manual PW (50-90%)
• 12dB HP and LP discrete filters with separate resonance controls
• ADSR filter envelope with adjustable initial and attack levels
• ADSR VCA envelope
• Velocity and aftertouch controls for filter brilliance and volume levels

Master controls

• Global coarse/fine tune
• VCO2 detune
• LFO with sine, saw, ramp, square and stepped random waveforms
• LFO destinations: VCO, VCF, VCA
• Crossfade between layers 1 and 2
• Global filter brilliance and resonance control for additional resonance
• Polyphonic aftertouch destinations: LFO speed, LFO to VCO amount, LFO to VCF amount, filter brilliance, volume level
• Keyboard tracking adjustment for VCF and VCA

Controls

• MIDI/MPE with polyphonic aftertouch
• Polyphonic pitchbend
• Unison
• MIDI over USB
• 128 factory and 128 user presets
• Alternate scales and tunings
• Software editor by Spektro Audio

Display

• 128×64 OLED display

Connectors

• DC input jack (9-24V)
• External modulation input jack (1/4″)
• Expander jack (DIN5)
• USB jack (type B, device/host)
• MIDI IN jack (DIN5)
• MIDI THRU jack (DIN5)
• AUDIO OUT LOW jack (1/4″)
• AUDIO OUT HIGH jack (1/4″)

Physical specifications  *   the DIY VERSION is different for the depth and weight

• 19″ 4U rack-mount
• Width: 483mm / 19″
• Height: 178mm / 7″
• Depth: 200mm / 7.8″
• Weight: ~ 4.8 kg / 10.6 lbs incl external PSU brick.

REVxxx     update here