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Oberheim SEM-1A
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- Ring Mod / Synth· Full Synths Drum Synths and Misc Synth
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- 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 373 rows
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Check before you build · 4 values the reader of this schematic was not sure of
- R135: printed R155, a duplicate of the Lowpass Out R155 (1K); renamed by sequence
- Q20: printed Q29, a duplicate of ENV2's Q29; renamed by sequence
- Q501: NPN/PNP not legible, inferred NPN from the circuit
- S501-S506: pole counts read from small slide-switch drawings; S504 could be SPDT
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 214 | ||||
| R1 | 374K | 374k | 1%; read from the schematic by eye | |
| R2 | 100K | 100k | 1%, matched with R3; read from the schematic by eye | |
| R3 | 100K | 100k | 1%; read from the schematic by eye | |
| R4 | 806K | 806k | 1%; read from the schematic by eye | |
| R5 | 4.7M | 4.7M | read from the schematic by eye | |
| R6 | 100K | 100k | 1%; read from the schematic by eye | |
| R7 | 22K | 22k | read from the schematic by eye | |
| R8 | 57.6K | 57.6k | 1%; read from the schematic by eye | |
| R9 | 1K | 1k | tempco (TC); read from the schematic by eye | |
| R10 | 18.2K | 18.2k | 1%; read from the schematic by eye | |
| R11 | 18.2K | 18.2k | 1%; read from the schematic by eye | |
| R12 | 750K | 750k | 1%; read from the schematic by eye | |
| R13 | 820K | 820k | read from the schematic by eye | |
| R14 | 6.2K | 6.2k | read from the schematic by eye | |
| R15 | 2.2K | 2.2k | read from the schematic by eye | |
| R16 | 10K | 10k | read from the schematic by eye | |
| R17 | 511K | 511k | 1%; read from the schematic by eye | |
| R18 | 1M | 1M | read from the schematic by eye | |
| R19 | 1K | 1k | read from the schematic by eye | |
| R20 | 1.5K | 1.5k | read from the schematic by eye | |
| R21 | 1.5K | 1.5k | read from the schematic by eye | |
| R22 | 2.7K | 2.7k | read from the schematic by eye | |
| R23 | 18.2K | 18.2k | 1%; read from the schematic by eye | |
| R24 | 59K | 59k | 1%; read from the schematic by eye | |
| R25 | 10K | 10k | read from the schematic by eye | |
| R26 | 470 | 470 | read from the schematic by eye | |
| R27 | 1K | 1k | read from the schematic by eye | |
| R28 | 16.2K | 16.2k | 1%; read from the schematic by eye | |
| R29 | 28.7K | 28.7k | 1%; read from the schematic by eye | |
| R30 | 91K | 91k | read from the schematic by eye | |
| R31 | 82K | 82k | read from the schematic by eye | |
| R32 | 75K | 75k | read from the schematic by eye | |
| R33 | 1K | 1k | read from the schematic by eye | |
| R34 | 47K | 47k | read from the schematic by eye | |
| R35 | 1K | 1k | read from the schematic by eye | |
| R36 | 1K | 1k | read from the schematic by eye | |
| R37 | 10K | 10k | read from the schematic by eye | |
| R38 | 10K | 10k | read from the schematic by eye | |
| R39 | 2.2K | 2.2k | read from the schematic by eye | |
| R40 | 180K | 180k | read from the schematic by eye | |
| R41 | 100K | 100k | read from the schematic by eye | |
| R42 | 390K | 390k | read from the schematic by eye | |
| R43 | 33K | 33k | read from the schematic by eye | |
| R44 | 1K | 1k | read from the schematic by eye | |
| R45 | 2.2K | 2.2k | read from the schematic by eye | |
| R46 | 374K | 374k | 1%; read from the schematic by eye | |
| R47 | 100K | 100k | 1%, matched with R48; read from the schematic by eye | |
| R48 | 100K | 100k | 1%; read from the schematic by eye | |
| R49 | 806K | 806k | 1%; read from the schematic by eye | |
| R50 | 4.7M | 4.7M | read from the schematic by eye | |
| R51 | 100K | 100k | 1%; read from the schematic by eye | |
| R52 | 22K | 22k | read from the schematic by eye | |
| R53 | 57.6K | 57.6k | 1%; read from the schematic by eye | |
| R54 | 1K | 1k | tempco (TC); read from the schematic by eye | |
| R55 | 18.2K | 18.2k | 1%; read from the schematic by eye | |
| R56 | 18.2K | 18.2k | 1%; read from the schematic by eye | |
| R57 | 750K | 750k | 1%; read from the schematic by eye | |
| R58 | 820K | 820k | read from the schematic by eye | |
| R59 | 6.2K | 6.2k | read from the schematic by eye | |
| R60 | 2.2K | 2.2k | read from the schematic by eye | |
| R61 | 10K | 10k | read from the schematic by eye | |
| R62 | 511K | 511k | 1%; read from the schematic by eye | |
| R63 | 1M | 1M | read from the schematic by eye | |
| R64 | 10K | 10k | read from the schematic by eye | |
| R65 | 1.5K | 1.5k | read from the schematic by eye | |
| R66 | 1.5K | 1.5k | read from the schematic by eye | |
| R67 | 2.7K | 2.7k | read from the schematic by eye | |
| R68 | 18.2K | 18.2k | 1%; read from the schematic by eye | |
| R69 | 59K | 59k | 1%; read from the schematic by eye | |
| R70 | 10K | 10k | read from the schematic by eye | |
| R71 | 470 | 470 | read from the schematic by eye | |
| R72 | 1K | 1k | read from the schematic by eye | |
| R73 | 16.2K | 16.2k | 1%; read from the schematic by eye | |
| R74 | 28.7K | 28.7k | 1%; read from the schematic by eye | |
| R75 | 91K | 91k | read from the schematic by eye | |
| R76 | 82K | 82k | read from the schematic by eye | |
| R77 | 75K | 75k | read from the schematic by eye | |
| R78 | 1K | 1k | read from the schematic by eye | |
| R79 | 47K | 47k | read from the schematic by eye | |
| R80 | 1K | 1k | read from the schematic by eye | |
| R81 | 1K | 1k | read from the schematic by eye | |
| R82 | 10K | 10k | read from the schematic by eye | |
| R83 | 10K | 10k | read from the schematic by eye | |
| R84 | 2.2K | 2.2k | read from the schematic by eye | |
| R85 | 180K | 180k | read from the schematic by eye | |
| R86 | 100K | 100k | read from the schematic by eye | |
| R87 | 390K | 390k | read from the schematic by eye | |
| R88 | 33K | 33k | read from the schematic by eye | |
| R89 | 1K | 1k | read from the schematic by eye | |
| R90 | 2.2K | 2.2k | read from the schematic by eye | |
| R91 | 33K | 33k | read from the schematic by eye | |
| R92 | 1K | 1k | read from the schematic by eye | |
| R93 | 4.7K | 4.7k | read from the schematic by eye | |
| R94 | 10K | 10k | read from the schematic by eye | |
| R95 | 33K | 33k | read from the schematic by eye | |
| R96 | 10K | 10k | read from the schematic by eye | |
| R97 | 470 | 470 | read from the schematic by eye | |
| R98 | 47K | 47k | read from the schematic by eye | |
| R99 | 47K | 47k | read from the schematic by eye | |
| R100 | 47K | 47k | read from the schematic by eye | |
| R101 | 47K | 47k | read from the schematic by eye | |
| R102 | 47K | 47k | read from the schematic by eye | |
| R103 | 33K | 33k | read from the schematic by eye | |
| R104 | 33K | 33k | read from the schematic by eye | |
| R105 | 10K | 10k | read from the schematic by eye | |
| R106 | 1M | 1M | read from the schematic by eye | |
| R107 | 300 | 300 | read from the schematic by eye | |
| R108 | 9.1K | 9.1k | read from the schematic by eye | |
| R109 | 15K | 15k | read from the schematic by eye | |
| R110 | 33K | 33k | read from the schematic by eye | |
| R111 | 7.5K | 7.5k | read from the schematic by eye | |
| R112 | 22K | 22k | read from the schematic by eye | |
| R113 | 33K | 33k | read from the schematic by eye | |
| R114 | 1K | 1k | read from the schematic by eye | |
| R115 | 4.7K | 4.7k | read from the schematic by eye | |
| R116 | 10K | 10k | read from the schematic by eye | |
| R117 | 33K | 33k | read from the schematic by eye | |
| R118 | 10K | 10k | read from the schematic by eye | |
| R119 | 470 | 470 | read from the schematic by eye | |
| R120 | 47K | 47k | read from the schematic by eye | |
| R121 | 47K | 47k | read from the schematic by eye | |
| R122 | 47K | 47k | read from the schematic by eye | |
| R123 | 47K | 47k | read from the schematic by eye | |
| R124 | 47K | 47k | read from the schematic by eye | |
| R125 | 33K | 33k | read from the schematic by eye | |
| R126 | 33K | 33k | read from the schematic by eye | |
| R127 | 10K | 10k | read from the schematic by eye | |
| R128 | 1M | 1M | read from the schematic by eye | |
| R129 | 300 | 300 | read from the schematic by eye | |
| R130 | 9.1K | 9.1k | read from the schematic by eye | |
| R131 | 15K | 15k | read from the schematic by eye | |
| R132 | 33K | 33k | read from the schematic by eye | |
| R133 | 7.5K | 7.5k | read from the schematic by eye | |
| R134 | 22K | 22k | read from the schematic by eye | |
| R135 | 220K | 220k | drawn R155 (clashes with the Lowpass Out R155 1K); R135 by sequence with R136/R137; read from the schematic by eye | |
| R136 | 220K | 220k | read from the schematic by eye | |
| R137 | 220K | 220k | read from the schematic by eye | |
| R138 | 100K | 100k | read from the schematic by eye | |
| R139 | 100K | 100k | read from the schematic by eye | |
| R140 | 1K | 1k | read from the schematic by eye | |
| R141 | 22K | 22k | read from the schematic by eye | |
| R142 | 100K | 100k | read from the schematic by eye | |
| R143 | 1M | 1M | read from the schematic by eye | |
| R144 | 220 | 220 | read from the schematic by eye | |
| R145 | 220 | 220 | read from the schematic by eye | |
| R146 | 15K | 15k | read from the schematic by eye | |
| R147 | 15K | 15k | read from the schematic by eye | |
| R148 | 100K | 100k | read from the schematic by eye | |
| R149 | 1M | 1M | read from the schematic by eye | |
| R150 | 220 | 220 | read from the schematic by eye | |
| R151 | 220 | 220 | read from the schematic by eye | |
| R152 | 15K | 15k | read from the schematic by eye | |
| R153 | 15K | 15k | read from the schematic by eye | |
| R154 | 1K | 1k | read from the schematic by eye | |
| R155 | 1K | 1k | read from the schematic by eye | |
| R156 | 100K | 100k | read from the schematic by eye | |
| R157 | 33K | 33k | read from the schematic by eye | |
| R158 | 10K | 10k | read from the schematic by eye | |
| R159 | 47K | 47k | read from the schematic by eye | |
| R160 | 1K | 1k | read from the schematic by eye | |
| R161 | 100K | 100k | read from the schematic by eye | |
| R162 | 100K | 100k | read from the schematic by eye | |
| R163 | 47K | 47k | read from the schematic by eye | |
| R164 | 100K | 100k | read from the schematic by eye | |
| R165 | 100K | 100k | read from the schematic by eye | |
| R166 | 150K | 150k | read from the schematic by eye | |
| R167 | 180K | 180k | read from the schematic by eye | |
| R168 | 150K | 150k | read from the schematic by eye | |
| R169 | 100K | 100k | read from the schematic by eye | |
| R170 | 22K | 22k | read from the schematic by eye | |
| R171 | 47K | 47k | read from the schematic by eye | |
| R172 | 1K | 1k | read from the schematic by eye | |
| R173 | 150K | 150k | read from the schematic by eye | |
| R174 | 100K | 100k | read from the schematic by eye | |
| R175 | 220 | 220 | read from the schematic by eye | |
| R176 | 1M | 1M | read from the schematic by eye | |
| R177 | 220 | 220 | read from the schematic by eye | |
| R178 | 47K | 47k | read from the schematic by eye | |
| R179 | 22K | 22k | read from the schematic by eye | |
| R180 | 100K | 100k | read from the schematic by eye | |
| R181 | 100K | 100k | read from the schematic by eye | |
| R182 | 2.2K | 2.2k | read from the schematic by eye | |
| R183 | 47K | 47k | read from the schematic by eye | |
| R184 | 33K | 33k | read from the schematic by eye | |
| R185 | 150K | 150k | read from the schematic by eye | |
| R186 | 10K | 10k | read from the schematic by eye | |
| R187 | 47K | 47k | read from the schematic by eye | |
| R188 | 1M | 1M | read from the schematic by eye | |
| R189 | 100K | 100k | read from the schematic by eye | |
| R190 | 15K | 15k | read from the schematic by eye | |
| R191 | 4.7K | 4.7k | read from the schematic by eye | |
| R192 | 390K | 390k | read from the schematic by eye | |
| R193 | 47K | 47k | read from the schematic by eye | |
| R194 | 1K | 1k | read from the schematic by eye | |
| R195 | 1K | 1k | read from the schematic by eye | |
| R196 | 150K | 150k | read from the schematic by eye | |
| R197 | 22K | 22k | read from the schematic by eye | |
| R198 | 1K | 1k | read from the schematic by eye | |
| R199 | 10K | 10k | read from the schematic by eye | |
| R200 | 33K | 33k | read from the schematic by eye | |
| R201 | 390K | 390k | read from the schematic by eye | |
| R202 | 6.8K | 6.8k | read from the schematic by eye | |
| R203 | 4.7 | 4.7 | drawn 4.7Ω; read from the schematic by eye | |
| R204 | 13.3K | 13.3k | 1%; read from the schematic by eye | |
| R205 | 12.1K | 12.1k | 1%; read from the schematic by eye | |
| R206 | 100K | 100k | 1%, matched with R207; read from the schematic by eye | |
| R207 | 100K | 100k | 1%; read from the schematic by eye | |
| R208 | 47K | 47k | read from the schematic by eye | |
| R501 | 22K | 22k | pot board; read from the schematic by eye | |
| R502 | 22K | 22k | pot board; read from the schematic by eye | |
| R503 | 4.7K | 4.7k | pot board; read from the schematic by eye | |
| R504 | 4.7K | 4.7k | pot board; read from the schematic by eye | |
| R505 | 1K | 1k | pot board, LED current limit; read from the schematic by eye | |
| R506 | 33K | 33k | pot board; read from the schematic by eye | |
| Capacitors 30 | ||||
| C1 | 100pF | 100p | read from the schematic by eye | |
| C2 | 10pF | 10p | read from the schematic by eye | |
| C3 | 1000pF | 1n | polystyrene; read from the schematic by eye | |
| C4 | 5pF | 5p | read from the schematic by eye | |
| C5 | 300pF | 300p | read from the schematic by eye | |
| C6 | 100pF | 100p | read from the schematic by eye | |
| C7 | 10pF | 10p | read from the schematic by eye | |
| C8 | 1000pF | 1n | polystyrene; read from the schematic by eye | |
| C9 | 5pF | 5p | read from the schematic by eye | |
| C10 | 300pF | 300p | read from the schematic by eye | |
| C11 | .001uF | 1n | read from the schematic by eye | |
| C12 | 4.7uF | 4.7u | electrolytic; read from the schematic by eye | |
| C13 | .001uF | 1n | read from the schematic by eye | |
| C14 | 4.7uF | 4.7u | electrolytic; read from the schematic by eye | |
| C15 | .15uF | 150n | read from the schematic by eye | |
| C16 | .15uF | 150n | read from the schematic by eye | |
| C17 | .15uF | 150n | read from the schematic by eye | |
| C18 | 10pF | 10p | read from the schematic by eye | |
| C19 | 5pF | 5p | read from the schematic by eye | |
| C20 | 300pF | 300p | 2%; read from the schematic by eye | |
| C21 | 300pF | 300p | 2%; read from the schematic by eye | |
| C22 | .33uF | 330n | read from the schematic by eye | |
| C23 | .15uF | 150n | read from the schematic by eye | |
| C24 | 6.8uF | 6.8u | electrolytic; read from the schematic by eye | |
| C25 | .01uF | 10n | read from the schematic by eye | |
| C26 | .15uF | 150n | read from the schematic by eye | |
| C27 | 100pF | 100p | read from the schematic by eye | |
| C28 | 100pF | 100p | read from the schematic by eye | |
| C29 | 220uF | 220u | 16V electrolytic; read from the schematic by eye | |
| C30 | 220uF | 220u | 16V electrolytic; read from the schematic by eye | |
| Diodes 13 | ||||
| D1 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D2 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D3 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D4 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D5 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D6 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D7 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D8 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D9 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D10 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D11 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D12 | 1N4148 | 1N4148 | notes: all diodes 1N4148; read from the schematic by eye | |
| D501 | 1N965 | 1N965 / 15V | zener, pot board; read from the schematic by eye | |
| Transistors 48 | ||||
| Q1 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q2 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q3 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q4 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q5 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q6 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q7 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q8 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q9 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q10 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q11 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q12 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q13 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q14 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q15 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q16 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q17 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q18 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q19 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q20 | 2N5172 | 2N5172 | NPN per notes; printed Q29 (clashes with ENV2's Q29), Q20 by sequence; read from the schematic by eye | |
| Q21 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q22 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q23 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q24 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q25 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q26 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q27 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q28 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q29 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q30 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q31 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q32 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q33 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q34 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q35 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q36 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q37 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q38 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q39 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q40 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q41 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q42 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q43 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q44 | 2N5172 | 2N5172 | NPN per notes; read from the schematic by eye | |
| Q45 | 2N3905 | 2N3905 | PNP per notes; read from the schematic by eye | |
| Q46 | 2N4302 | 2N4302 | FET per notes; read from the schematic by eye | |
| Q47 | 2N3638A | 2N3638A | PNP pass transistor, -15V regulator; read from the schematic by eye | |
| Q501 | 2N5172 | 2N5172 | pot board LED driver; type inferred as NPN from the circuit; read from the schematic by eye | |
| ICs 27 | ||||
| A1 | CA3086 | CA3086 | transistor array; VCO1 and VCO2 expo converters and VCO2 sync transistor share it; read from the schematic by eye | |
| A2 | 741 | 741 | read from the schematic by eye | |
| A3 | 741 | 741 | read from the schematic by eye | |
| A4 | 301A | 301A | read from the schematic by eye | |
| A5 | 741 | 741 | read from the schematic by eye | |
| A6 | 301A | 301A | read from the schematic by eye | |
| A7 | 741 | 741 | read from the schematic by eye | |
| A8 | 741 | 741 | read from the schematic by eye | |
| A9 | 301A | 301A | read from the schematic by eye | |
| A10 | 741 | 741 | read from the schematic by eye | |
| A11 | 301A | 301A | read from the schematic by eye | |
| A12 | 301A | 301A | read from the schematic by eye | |
| A13 | CA3080 | CA3080 | read from the schematic by eye | |
| A14 | 741 | 741 | read from the schematic by eye | |
| A15 | CA3080 | CA3080 | read from the schematic by eye | |
| A16 | 741 | 741 | read from the schematic by eye | |
| A17 | 741 | 741 | read from the schematic by eye | |
| A18 | 741 | 741 | read from the schematic by eye | |
| A19 | 741 | 741 | read from the schematic by eye | |
| A20 | CA3080 | CA3080 | read from the schematic by eye | |
| A21 | 741 | 741 | read from the schematic by eye | |
| A22 | 741 | 741 | read from the schematic by eye | |
| A23 | CA3080 | CA3080 | read from the schematic by eye | |
| A24 | 741 | 741 | read from the schematic by eye | |
| A25 | 741 | 741 | read from the schematic by eye | |
| A26 | 723 | 723 | +15V regulator; read from the schematic by eye | |
| A27 | 301A | 301A | -15V regulator; read from the schematic by eye | |
| Potentiometers 20 | ||||
| VCO1 Freq | 50K | 50k | Potentiometer | P501; read from the schematic by eye |
| VCO1 Mod | 50K | 50k | Potentiometer | P502, FM/PWM; read from the schematic by eye |
| VCO1 PW | 50K | 50k | Potentiometer | P503; read from the schematic by eye |
| VCO2 Freq | 50K | 50k | Potentiometer | P504; read from the schematic by eye |
| VCO2 Mod | 50K | 50k | Potentiometer | P505, FM/PWM; read from the schematic by eye |
| VCO2 PW | 50K | 50k | Potentiometer | P506; read from the schematic by eye |
| Env1 Attack | 1M | 1M | Potentiometer | P507; read from the schematic by eye |
| Env1 Decay | 1M | 1M | Potentiometer | P508; read from the schematic by eye |
| Env1 Sust | 50K | 50k | Potentiometer | P509; read from the schematic by eye |
| Env2 Attack | 1M | 1M | Potentiometer | P510; read from the schematic by eye |
| Env2 Decay | 1M | 1M | Potentiometer | P511; read from the schematic by eye |
| Env2 Sust | 50K | 50k | Potentiometer | P512; read from the schematic by eye |
| P513 | 50K | 50k | Potentiometer | VCF input level, Ext 1 / VCO2 pulse; read from the schematic by eye |
| P514 | 50K | 50k | Potentiometer | VCF input level, VCO2 / VCO1; read from the schematic by eye |
| P515 | 50K | 50k | Potentiometer | VCF input level, VCO1 pulse / saw; read from the schematic by eye |
| VCF Res | 50K | 50k | Potentiometer | P516; read from the schematic by eye |
| VCF Freq | 50K | 50k | Potentiometer | P517; read from the schematic by eye |
| VCF Mod | 50K | 50k | Potentiometer | P518; read from the schematic by eye |
| Notch | 50K | 50k | Potentiometer | P519; read from the schematic by eye |
| LFO | 1M | 1M | Potentiometer | P520, rate; read from the schematic by eye |
| Trimmers 14 | ||||
| T1 | 100K | 100k | VCO1 init freq; read from the schematic by eye | |
| T2 | 10K | 10k | VCO1 volts/oct; read from the schematic by eye | |
| T3 | 10K | 10k | VCO1 hi-freq track; read from the schematic by eye | |
| T4 | 100K | 100k | VCO1 init PW; read from the schematic by eye | |
| T5 | 100K | 100k | VCO2 init freq; read from the schematic by eye | |
| T6 | 10K | 10k | VCO2 volts/oct; read from the schematic by eye | |
| T7 | 10K | 10k | VCO2 hi-freq track; read from the schematic by eye | |
| T8 | 100K | 100k | VCO2 init PW; read from the schematic by eye | |
| T9 | 100K | 100k | VCF offset 1; read from the schematic by eye | |
| T10 | 100K | 100k | VCF offset 2; read from the schematic by eye | |
| T11 | 100K | 100k | VCF init freq; read from the schematic by eye | |
| T12 | 10K | 10k | VCF volts/oct; read from the schematic by eye | |
| T13 | 100K | 100k | VCA offset; read from the schematic by eye | |
| T14 | 1K | 1k | regulator adjust; read from the schematic by eye | |
| Switches 6 | ||||
| S501 | SP3T | SP3T | VCO1 mod source LFO/Ext/Env1; read from the schematic by eye | |
| S502 | SP3T | SP3T | VCO2 mod source LFO/Ext/Env2; read from the schematic by eye | |
| S503 | SPST | SPST | VCO sync on/off; read from the schematic by eye | |
| S504 | DPDT | DPDT | filter mode, bandpass / notch; read from the schematic by eye | |
| S505 | SP3T | SP3T | VCF mod source LFO/Ext/Env2; read from the schematic by eye | |
| S506 | SPST | SPST | VCA Env1 on; read from the schematic by eye | |
| LEDs 1 | ||||
| D502 | LED | LED | pot board indicator, no part number given; read from the schematic by eye | |