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OSCILLATORS - Two discrete oscillators with Sawtooth and Pulse waveforms
- Pulse width and pulse width modulation
- Hard sync: OSC2 to OSC1 with envelope control
- Oscillators can be synced to Gate
- OSC2 tuning: Interval and Beat (fine) amount
- Pink noise generator
MIXER - OSC1 amount
- OSC2 amount
- Noise / External input amount
FILTERS - Four-pole (24db/oct) transistor ladder Low Pass Filter with resonant control
- LPF can be driven to self-oscillation
- Keyboard tracking amount
- Independent passive High Pass Filter
ENVELOPES - Two ADS style envelopes for LPF and VCA
LFO / SAMPLE & HOLD - Triangle, Square and random waveforms
- Rate, OSC amount, VCF amount
- Midi modwheel / aftertouch to VCF / VCA / both
MIDI - Built-in 16-bit Midi to CV converter with 2 channel DAC
- 1V/OCT and MOD amount (via mod wheel or aftertouch)
- Poly-chain (for max. 5 units)
IN/OUT - Mono output (1/4" phone jack)
- Headphones output (1/4" stereo phone jack)
- Mono external input (1/4" phone jack)
- CV input (1/4" phone jack)
- GATE input (1/4" phone jack)
- VCF CV input (1/4" phone jack)
- Midi input and thru (5-pin DIN)
POWER - 12VDC (0.35A) power adapter (2.1mm DC jack)
DIMENSIONS - Enclosure 10" x 6" x 2" (254mm x 152.4mm x 50.8mm)
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BOM:
PROGUE-REV-A-BOM.pdf (last version February 2020)
Digikey: https://www.digikey.fi/short/4720z1
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LM393D should be 511-LM393ADT
alpha 9mm not in card
2x C1M
1x C50K
Guide:
| ID | date | issue | solution |
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| 1 | 26.1.2021 | info- ribbon cable | buy a floppy disk cable 2*17pin its cheaper 15cm is fine
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| 2 |
| ic pin out | DAC and LDO is upside down, all other pin1 top-left or check dadatsheet |
| 3 |
| C95A is C15A1 C95B is C15B1 on pcbs |
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| 4 | 26.1 | bom change (last version is A) | R210 was 1k5 now 1k (SMT led resistor) C95a1 and C95b1 changed to: C95A and C95B added one dip8 socket to bom |
| 5 | 26.1 | install S7 at the end of the build - for prototype version only !!!
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Panel: