Enclosure not stated
BOSS GE-7
Based on the Boss GE-7· 1 other board clones it
- Category
- EQ / Filter· Tone Control and EQs
- Price
- see vendor
- Tags
- Tone Control and EQs
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 108 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- R37: designator not printed on the 56K at Q2; assigned by elimination
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 52 | ||||
| R1 | 470 | 470 | low noise mod: 140 ohms (470 parallel 200); read from the schematic by eye | |
| R2 | 2.2k | 2.2k | read from the schematic by eye | |
| R3 | 820 | 820 | read from the schematic by eye | |
| R4 | 330 | 330 | read from the schematic by eye | |
| R5 | 82K | 82k | read from the schematic by eye | |
| R6 | 330 | 330 | read from the schematic by eye | |
| R7 | 100K | 100k | read from the schematic by eye | |
| R8 | 330 | 330 | read from the schematic by eye | |
| R9 | 82K | 82k | read from the schematic by eye | |
| R10 | 3.9K | 3.9k | read from the schematic by eye | |
| R11 | 100 | 100 | read from the schematic by eye | |
| R12 | 100K | 100k | read from the schematic by eye | |
| R13 | 1M | 1M | read from the schematic by eye | |
| R14 | 1K | 1k | read from the schematic by eye | |
| R15 | 10K | 10k | read from the schematic by eye | |
| R16 | 100K | 100k | read from the schematic by eye | |
| R17 | 330 | 330 | read from the schematic by eye | |
| R18 | 100K | 100k | read from the schematic by eye | |
| R19 | 330 | 330 | read from the schematic by eye | |
| R20 | 3.3K | 3.3k | read from the schematic by eye | |
| R21 | 82K | 82k | read from the schematic by eye | |
| R22 | 330 | 330 | read from the schematic by eye | |
| R23 | 3.3K | 3.3k | read from the schematic by eye | |
| R24 | 3.3k | 3.3k | read from the schematic by eye | |
| R25 | 3.3k | 3.3k | read from the schematic by eye | |
| R26 | 10k | 10k | read from the schematic by eye | |
| R27 | 10k | 10k | read from the schematic by eye | |
| R28 | 470 | 470 | read from the schematic by eye | |
| R29 | 470K | 470k | read from the schematic by eye | |
| R30 | 10K | 10k | read from the schematic by eye | |
| R31 | 4.7K | 4.7k | read from the schematic by eye | |
| R32 | 1M | 1M | read from the schematic by eye | |
| R33 | 4.7k | 4.7k | read from the schematic by eye | |
| R34 | 1M | 1M | read from the schematic by eye | |
| R35 | 1M | 1M | read from the schematic by eye | |
| R36 | 470 | 470 | read from the schematic by eye | |
| R37 | 56K | 56k | designator not printed; the unlabeled 56K at Q2 base, only number missing from R1-R52; read from the schematic by eye | |
| R38 | 56K | 56k | read from the schematic by eye | |
| R39 | 56K | 56k | read from the schematic by eye | |
| R40 | 56K | 56k | read from the schematic by eye | |
| R41 | 100K | 100k | read from the schematic by eye | |
| R42 | 100K | 100k | read from the schematic by eye | |
| R43 | 1M | 1M | read from the schematic by eye | |
| R44 | 1M | 1M | read from the schematic by eye | |
| R45 | 1M | 1M | read from the schematic by eye | |
| R46 | 22K | 22k | read from the schematic by eye | |
| R47 | 470K | 470k | read from the schematic by eye | |
| R48 | 470K | 470k | read from the schematic by eye | |
| R49 | 470K | 470k | read from the schematic by eye | |
| R50 | 470K | 470k | read from the schematic by eye | |
| R51 | 470K | 470k | read from the schematic by eye | |
| R52 | 470K | 470k | read from the schematic by eye | |
| Capacitors 32 | ||||
| C1 | .047uF | 47n | read from the schematic by eye | |
| C2 | .039uF | 39n | read from the schematic by eye | |
| C3 | .0022uF | 2.2n | read from the schematic by eye | |
| C4 | .1uF | 100n | tantalum; read from the schematic by eye | |
| C5 | .15uF | 150n | tantalum; read from the schematic by eye | |
| C6 | .0082uF | 8.2n | read from the schematic by eye | |
| C7 | .33uF | 330n | tantalum; read from the schematic by eye | |
| C8 | .033uF | 33n | read from the schematic by eye | |
| C9 | .68uF | 680n | tantalum; read from the schematic by eye | |
| C10 | 1.5uF | 1.5u | tantalum; read from the schematic by eye | |
| C11 | 1.0uF | 1u | 50V; read from the schematic by eye | |
| C12 | .01uF | 10n | read from the schematic by eye | |
| C13 | .056uF | 56n | read from the schematic by eye | |
| C14 | .015uF | 15n | read from the schematic by eye | |
| C15 | .0039uF | 3.9n | read from the schematic by eye | |
| C16 | 10uF | 10u | tantalum; read from the schematic by eye | |
| C17 | 100uF | 100u | 16V; read from the schematic by eye | |
| C18 | 47uF | 47u | 10V; read from the schematic by eye | |
| C19 | 1.0uF | 1u | 50V; read from the schematic by eye | |
| C20 | .015uF | 15n | read from the schematic by eye | |
| C21 | 47pF | 47p | read from the schematic by eye | |
| C22 | .047uF | 47n | read from the schematic by eye | |
| C23 | .047uF | 47n | read from the schematic by eye | |
| C24 | .047uF | 47n | read from the schematic by eye | |
| C25 | 1.0uF | 1u | 50V; read from the schematic by eye | |
| C26 | .047uF | 47n | read from the schematic by eye | |
| C27 | .015uF | 15n | read from the schematic by eye | |
| C28 | 470pF | 470p | read from the schematic by eye | |
| C29 | 470pF | 470p | read from the schematic by eye | |
| C30 | 220pF | 220p | read from the schematic by eye | |
| C31 | 220pF | 220p | read from the schematic by eye | |
| ×1 | 270pF | 270p | optional: added across U4B feedback in the low noise mod; read from the schematic by eye | |
| Diodes 5 | ||||
| D1 | Diode | DIODE | no part number given; adapter polarity; 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 | 5.6V Zener | 5V6 | read from the schematic by eye | |
| D5 | 1N4001 | 1N4001 | read from the schematic by eye | |
| Transistors 5 | ||||
| Q1 | 2SC732 | 2SC732 | read from the schematic by eye | |
| Q2 | 2SC945 | 2SC945 | read from the schematic by eye | |
| Q3 | 2SC945 | 2SC945 | read from the schematic by eye | |
| Q4 | 2SK30A | 2SK30A | JFET switch; read from the schematic by eye | |
| Q5 | 2SK30A | 2SK30A | JFET switch; read from the schematic by eye | |
| ICs 5 | ||||
| U1 | TL022 | TL022 | low noise mod: TL072; read from the schematic by eye | |
| U2 | TL022 | TL022 | low noise mod: TL072; read from the schematic by eye | |
| U3 | TL022 | TL022 | low noise mod: TL072; read from the schematic by eye | |
| U4 | JRC4558 | JRC4558 | low noise mod: JRC2068; read from the schematic by eye | |
| U5 | HA12017 | HA12017 | 8-pin SIP; low noise mod: OPA134; read from the schematic by eye | |
| Potentiometers 8 | ||||
| 100Hz | B10K | B10k | Potentiometer | VR1 slider; drawn 10K Lin; read from the schematic by eye |
| 200Hz | B10K | B10k | Potentiometer | VR2 slider; drawn 10K Lin; read from the schematic by eye |
| 400Hz | B10K | B10k | Potentiometer | VR3 slider; drawn 10K Lin; read from the schematic by eye |
| 800Hz | B10K | B10k | Potentiometer | VR4 slider; drawn 10K Lin; read from the schematic by eye |
| 1.6kHz | B10K | B10k | Potentiometer | VR5 slider; drawn 10K Lin; read from the schematic by eye |
| 3.2kHz | B10K | B10k | Potentiometer | VR6 slider; drawn 10K Lin; read from the schematic by eye |
| 6.4kHz | B10K | B10k | Potentiometer | VR7 slider; drawn 10K Lin; read from the schematic by eye |
| Level | B10K | B10k | Potentiometer | VR8; drawn 10K Lin; read from the schematic by eye |
| LEDs 1 | ||||
| ×1 | Red LED | RED LED | read from the schematic by eye | |
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