Enclosure not stated · 7 knobs
Maestro G2
Based on the Maestro G2
- Category
- Ring Mod / Synth· Full Synths Drum Synths and Misc Synth
- Controls
- Sensitivity · Wow-Wow Speed · Echo Repeat Speed · String Bass Volume · Percussion Volume · Treble Volume · Treble Tone
- Price
- see vendor
- Tags
- Full Synths Drum Synths and Misc Synth
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 136 rows
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Check before you build · 5 values the reader of this schematic was not sure of
- 33uF/47uF/56uF caps: drawn without decimal point, could be .33/.47/.56
- L1: 27mH or 2.7mH
- Regulator transistor designator illegible
- VR8 area: 10K label may belong to the pot rather than the series resistor
- Resistor/cap counts tallied by eye on an undesignated drawing; small miscount possible
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 38 | ||||
| ×1 | 1.8 | 1.8 | read from the schematic by eye | |
| ×1 | 47 | 47 | read from the schematic by eye | |
| ×1 | 120 | 120 | read from the schematic by eye | |
| ×1 | 270 | 270 | read from the schematic by eye | |
| ×1 | 470 | 470 | read from the schematic by eye | |
| ×1 | 560 | 560 | read from the schematic by eye | |
| ×10 | 1K | 1k | read from the schematic by eye | |
| ×1 | 1.2K | 1.2k | read from the schematic by eye | |
| ×5 | 2.2K | 2.2k | read from the schematic by eye | |
| ×1 | 2.7K | 2.7k | read from the schematic by eye | |
| ×7 | 3.3K | 3.3k | read from the schematic by eye | |
| ×7 | 4.7K | 4.7k | read from the schematic by eye | |
| ×1 | 5.6K | 5.6k | read from the schematic by eye | |
| ×2 | 6.8K | 6.8k | read from the schematic by eye | |
| ×1 | 8.2K | 8.2k | read from the schematic by eye | |
| ×24 | 10K | 10k | one is the series resistor after the VR8 wiper; its 10K label may belong to VR8; read from the schematic by eye | |
| ×2 | 15K | 15k | read from the schematic by eye | |
| ×4 | 22K | 22k | read from the schematic by eye | |
| ×1 | 30K | 30k | mains side, across the pilot light; read from the schematic by eye | |
| ×4 | 33K | 33k | read from the schematic by eye | |
| ×8 | 47K | 47k | read from the schematic by eye | |
| ×4 | 56K | 56k | read from the schematic by eye | |
| ×4 | 68K | 68k | one is marked with a factory-tailored dot (bongo gen collector); read from the schematic by eye | |
| ×4 | 82K | 82k | read from the schematic by eye | |
| ×7 | 100K | 100k | read from the schematic by eye | |
| ×2 | 150K | 150k | read from the schematic by eye | |
| ×5 | 220K | 220k | read from the schematic by eye | |
| ×2 | 330K | 330k | read from the schematic by eye | |
| ×1 | 390K | 390k | read from the schematic by eye | |
| ×2 | 470K | 470k | read from the schematic by eye | |
| ×1 | 820K | 820k | read from the schematic by eye | |
| ×5 | 1M | 1M | read from the schematic by eye | |
| ×1 | 1.2M | 1.2M | read from the schematic by eye | |
| ×2 | 1.5M | 1.5M | read from the schematic by eye | |
| ×1 | 1.8M | 1.8M | read from the schematic by eye | |
| ×1 | 2.2M | 2.2M | read from the schematic by eye | |
| ×1 | 10M | 10M | read from the schematic by eye | |
| ×3 | ? | ? | factory-tailored resistors marked with a dot, no value (noise gen Q16 emitter, noise amp, string bass network); read from the schematic by eye | |
| Capacitors 30 | ||||
| ×1 | 200pF | 200p | drawn as mmf (pF); read from the schematic by eye | |
| ×3 | 500pF | 500p | drawn as mmf (pF); read from the schematic by eye | |
| ×1 | .001uF | 1n | read from the schematic by eye | |
| ×1 | .0022uF | 2.2n | read from the schematic by eye | |
| ×1 | .0033uF | 3.3n | read from the schematic by eye | |
| ×1 | .0068uF | 6.8n | read from the schematic by eye | |
| ×6 | .01uF | 10n | one is on the mains side, across the on/off switch; read from the schematic by eye | |
| ×3 | .015uF | 15n | read from the schematic by eye | |
| ×2 | .022uF | 22n | read from the schematic by eye | |
| ×1 | .027uF | 27n | read from the schematic by eye | |
| ×2 | .033uF | 33n | read from the schematic by eye | |
| ×4 | .047uF | 47n | read from the schematic by eye | |
| ×1 | .056uF | 56n | read from the schematic by eye | |
| ×1 | .1uF | 100n | read from the schematic by eye | |
| ×3 | .18uF | 180n | read from the schematic by eye | |
| ×1 | .33uF | 330n | read from the schematic by eye | |
| ×14 | 1uF | 1u | read from the schematic by eye | |
| ×2 | 2uF | 2u | read from the schematic by eye | |
| ×1 | 3uF | 3u | read from the schematic by eye | |
| ×1 | 6uF | 6u | read from the schematic by eye | |
| ×1 | 10uF | 10u | read from the schematic by eye | |
| ×2 | 15uF | 15u | read from the schematic by eye | |
| ×1 | 22uF | 22u | read from the schematic by eye | |
| ×5 | 25uF | 25u | read from the schematic by eye | |
| ×4 | 33uF | 33u | drawn without a decimal point; may be .33/.47/.56 uF on a bad copy; read from the schematic by eye | |
| ×2 | 47uF | 47u | drawn without a decimal point; may be .33/.47/.56 uF on a bad copy; read from the schematic by eye | |
| ×1 | 50uF | 50u | read from the schematic by eye | |
| ×1 | 56uF | 56u | drawn without a decimal point; may be .33/.47/.56 uF on a bad copy; read from the schematic by eye | |
| ×1 | 500uF | 500u | read from the schematic by eye | |
| ×2 | 1000uF | 1m | read from the schematic by eye | |
| Diodes 12 | ||||
| D1 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D2 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D3 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D4 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D5 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D6 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D7 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D8 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D9 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D10 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D11 | Diode | DIODE | no part number given; read from the schematic by eye | |
| Z1 | ? | ? | zener, voltage not given; read from the schematic by eye | |
| Transistors 31 | ||||
| Q1 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q2 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q3 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q4 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q5 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q6 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q7 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q8 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q9 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q10 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q11 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q12 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q13 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q14 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q15 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q16 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q17 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q18 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q19 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q20 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q21 | ? | ? | FET, type not given; read from the schematic by eye | |
| Q22 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q23 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q24 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q25 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q26 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q27 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q28 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| Q29 | ? | ? | FET, type not given; read from the schematic by eye | |
| Q30 | ? | ? | transistor, type not given (drawing refers to a separate parts list); read from the schematic by eye | |
| ×1 | ? | ? | series regulator transistor; designator illegible (Q3? clashes with pick-detector Q3); read from the schematic by eye | |
| Opto 1 | ||||
| P1 | ? | ? | lamp and photocell (wow-wow photocell); read from the schematic by eye | |
| Inductors 3 | ||||
| L1 | 27mH | 27mH | read as 27mh, could be 2.7mH; read from the schematic by eye | |
| L2 | 100mH | 100mH | read from the schematic by eye | |
| L3 | 500mH | 500mH | read from the schematic by eye | |
| Potentiometers 7 | ||||
| Sensitivity | 10K | 10k | Potentiometer | VR1; read from the schematic by eye |
| Wow-Wow Speed | 10K | 10k | Potentiometer | VR2; read from the schematic by eye |
| Echo Repeat Speed | 1M | 1M | Potentiometer | VR4; read from the schematic by eye |
| String Bass Volume | 10K | 10k | Potentiometer | VR6; read from the schematic by eye |
| Percussion Volume | 10K | 10k | Potentiometer | VR7; read from the schematic by eye |
| Treble Volume | 10K | 10k | Potentiometer | VR8; read from the schematic by eye |
| Treble Tone | 250K | 250k | Potentiometer | VR9; read from the schematic by eye |
| Trimmers 2 | ||||
| Bongo Adj | 1K | 1k | VR3; read from the schematic by eye | |
| Percussion Adj | 10K | 10k | VR5; read from the schematic by eye | |
| Switches 11 | ||||
| Brush | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Clave | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Tambourine | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Bongo | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| String Bass | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Wow-Wow | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Color Tones 1 | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Color Tones 2 | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Natural Amp | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Fuzz Tone | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Echo Repeat | ? | ? | tab switch, pole count not given; read from the schematic by eye | |
| Other 1 | ||||
| ×2 | P-8802-1 | P-8802-1 | squarer and divider flip-flop modules (700R, 2x2.2K, 2x22K, 2x22K, .001, 2x.0058, .015 inside); read from the schematic by eye | |