Enclosure not stated · 6 knobs
Electro Harmonix Bass Synthesizer
Based on the Electro-Harmonix Bass Synthesizer
- Category
- Ring Mod / Synth· Guitar Synth and Misc Signal Shapers
- Controls
- Pre-Amp Gain · Guitar · Squelch · Octave · Trigger · Square Wave
- Price
- see vendor
- Tags
- Guitar Synth and Misc Signal Shapers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 81 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- ×1 resistor at A7A pin 3: no designator or value drawn
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 40 | ||||
| R1 | 68K | 68k | read from the schematic by eye | |
| R2 | 4.7K | 4.7k | read from the schematic by eye | |
| R4 | 470 | 470 | read from the schematic by eye | |
| R5 | 13K | 13k | read from the schematic by eye | |
| R7 | 2.2K | 2.2k | read from the schematic by eye | |
| R8 | 3.3K | 3.3k | read from the schematic by eye | |
| R9 | 33K | 33k | read from the schematic by eye | |
| R10 | 10K | 10k | read from the schematic by eye | |
| R11 | 10K | 10k | read from the schematic by eye | |
| R12 | 7.5K | 7.5k | read from the schematic by eye | |
| R13 | 15K | 15k | read from the schematic by eye | |
| R15 | 3.3M | 3.3M | read from the schematic by eye | |
| R16 | 27K | 27k | read from the schematic by eye | |
| R17 | 2.7K | 2.7k | read from the schematic by eye | |
| R18 | 27K | 27k | read from the schematic by eye | |
| R19 | 560 | 560 | read from the schematic by eye | |
| R20 | 3.3K | 3.3k | read from the schematic by eye | |
| R21 | 2.2K | 2.2k | read from the schematic by eye | |
| R22 | 22K | 22k | read from the schematic by eye | |
| R23 | 47K | 47k | read from the schematic by eye | |
| R24 | 1K | 1k | read from the schematic by eye | |
| R25 | 22K | 22k | read from the schematic by eye | |
| R26 | 820 | 820 | read from the schematic by eye | |
| R27 | 4.7K | 4.7k | read from the schematic by eye | |
| R29 | 8.2K | 8.2k | read from the schematic by eye | |
| R30 | 2.2K | 2.2k | read from the schematic by eye | |
| R32 | 390K | 390k | read from the schematic by eye | |
| R33 | 330 | 330 | read from the schematic by eye | |
| R34 | 2.7K | 2.7k | read from the schematic by eye | |
| R35 | 10K | 10k | read from the schematic by eye | |
| R37 | 13K | 13k | read from the schematic by eye | |
| R38 | 22K | 22k | read from the schematic by eye | |
| R39 | 120K | 120k | read from the schematic by eye | |
| R40 | 6.8K | 6.8k | read from the schematic by eye | |
| R41 | 220 | 220 | read from the schematic by eye | |
| R42 | 820K | 820k | read from the schematic by eye | |
| R43 | 1K | 1k | read from the schematic by eye | |
| R44 | 330K | 330k | read from the schematic by eye | |
| R45 | 470 | 470 | read from the schematic by eye | |
| ×1 | ? | ? | no designator or value; from A7A pin 3 to -V, beside R33; read from the schematic by eye | |
| Capacitors 16 | ||||
| C1 | 0.1uF | 100n | read from the schematic by eye | |
| C2 | 0.022uF | 22n | read from the schematic by eye | |
| C3 | 0.0022uF | 2.2n | read from the schematic by eye | |
| C4 | 0.47uF | 470n | tantalum; read from the schematic by eye | |
| C5 | 0.0018uF | 1.8n | read from the schematic by eye | |
| C6 | 1.0uF | 1u | electrolytic; read from the schematic by eye | |
| C7 | 4.7uF | 4.7u | tantalum; read from the schematic by eye | |
| C8 | 2.2uF | 2.2u | electrolytic; read from the schematic by eye | |
| C9 | 1.0uF | 1u | electrolytic; read from the schematic by eye | |
| C10 | 0.1uF | 100n | read from the schematic by eye | |
| C11 | 1.0uF | 1u | tantalum; read from the schematic by eye | |
| C12 | 0.47uF | 470n | tantalum; read from the schematic by eye | |
| C13 | 0.082uF | 82n | read from the schematic by eye | |
| C14 | 1.0uF | 1u | electrolytic; read from the schematic by eye | |
| C15 | 0.047uF | 47n | read from the schematic by eye | |
| C16 | 4.7uF | 4.7u | electrolytic; read from the schematic by eye | |
| Diodes 11 | ||||
| D1 | 1N914 | 1N914 | read from the schematic by eye | |
| D2 | 1N914 | 1N914 | read from the schematic by eye | |
| D3 | 1N914 | 1N914 | read from the schematic by eye | |
| D4 | 1N914 | 1N914 | read from the schematic by eye | |
| D5 | 1N914 | 1N914 | read from the schematic by eye | |
| D6 | 1N914 | 1N914 | read from the schematic by eye | |
| D7 | 1N914 | 1N914 | read from the schematic by eye | |
| D8 | 1N914 | 1N914 | read from the schematic by eye | |
| D9 | 1N914 | 1N914 | read from the schematic by eye | |
| D10 | 1N914 | 1N914 | read from the schematic by eye | |
| D11 | 1N914 | 1N914 | read from the schematic by eye | |
| Transistors 1 | ||||
| Q1 | 2N5087 | 2N5087 | read from the schematic by eye | |
| ICs 7 | ||||
| A2 | RC4558 | RC4558 | read from the schematic by eye | |
| A3 | RC4558 | RC4558 | read from the schematic by eye | |
| A4 | RC4558 | RC4558 | read from the schematic by eye | |
| A5 | RC4558 | RC4558 | read from the schematic by eye | |
| A6 | RC4558 | RC4558 | read from the schematic by eye | |
| A7 | RC4558 | RC4558 | read from the schematic by eye | |
| A8 | CA3094 | CA3094 | or EH1040 (EHX house number); read from the schematic by eye | |
| Potentiometers 6 | ||||
| Pre-Amp Gain | 10K | 10k | Potentiometer | R3; read from the schematic by eye |
| Guitar | B100K | B100k | Potentiometer | R6, drawn 100K LIN; read from the schematic by eye |
| Squelch | 100K | 100k | Potentiometer | R14; read from the schematic by eye |
| Octave | B100K | B100k | Potentiometer | R28, drawn 100K LIN; read from the schematic by eye |
| Trigger | B100K | B100k | Potentiometer | R31, drawn 100K LIN; read from the schematic by eye |
| Square Wave | B100K | B100k | Potentiometer | R36, drawn 100K LIN; read from the schematic by eye |