Enclosure not stated
GE7b Bass Equalizer
Based on the Boss GEB-7 Bass Equalizer· 1 other board clones it
- Category
- EQ / Filter
- Price
- €6.25in stock
From the vendor
Often, the three-point correction that the amplifier is equipped with is insufficient because it covers too much of the bandwidth and by correcting one area of it we interfere with the others. Sometimes the instrument itself requires cutting or emphasizing certain frequencies for the distortion to sound selectively. This is where the graphic equalizer comes in handy.
PCB. Dimensions: 82mm x 39mm.
Files to download:
•
GE-7B graphic equalizer ENG.pdf
Schematic
The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 73 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 32 | ||||
| R20 | 330R | 330 | ||
| R22 | 330R | 330 | ||
| R24 | 330R | 330 | ||
| R26 | 330R | 330 | ||
| R28 | 330R | 330 | ||
| R30 | 330R | 330 | ||
| R4 | 470R | 470 | ||
| R13 | 470R | 470 | ||
| R18 | 560R | 560 | ||
| R16 | 1k | 1k | ||
| R7 | 2k2 | 2.2k | ||
| R9 | 3k3 | 3.3k | ||
| R10 | 3k3 | 3.3k | ||
| R5 | 4k7 | 4.7k | ||
| R12 | 4k7 | 4.7k | ||
| R2 | 10k | 10k | ||
| R6 | 10k | 10k | ||
| R8 | 10k | 10k | ||
| R15 | 10k | 10k | ||
| R31 | 33k | 33k | ||
| R32 | 33k | 33k | ||
| R19 | 82k | 82k | ||
| R21 | 82k | 82k | ||
| R27 | 82k | 82k | ||
| R17 | 100k | 100k | ||
| R23 | 100k | 100k | ||
| R25 | 100k | 100k | ||
| R29 | 100k | 100k | ||
| R3 | 470k | 470k | ||
| R1 | 1M | 1M | ||
| R11 | 1M | 1M | ||
| R14 | 1M | 1M | ||
| Capacitors 26 | ||||
| C1 | 10p | 10p | ||
| C6 | 220p | 220p | ||
| C13 | 3n3 | 3.3n | ||
| C15 | 5n6 | 5.6n | ||
| C17 | 12n | 12n | ||
| C3 | 15n | 15n | ||
| C9 | 15n | 15n | ||
| C19 | 22n | 22n | ||
| C21 | 33n | 33n | ||
| C2 | 47n | 47n | ||
| C10 | 47n | 47n | ||
| C23 | 56n | 56n | ||
| C12 | 68n | 68n | ||
| C14 | 68n | 68n | ||
| C4 | 100n | 100n | ||
| C7 | 100n | 100n | ||
| C16 | 150n | 150n | ||
| C18 | 220n | 220n | ||
| C20 | 470n | 470n | ||
| C8 | 1u | 1u | ||
| C11 | 1u | 1u | ||
| C22 | 1u5 | 1.5u | ||
| C24 | 2u2 | 2.2u | ||
| C5 | 10u | 10u | ||
| C25 | 47u | 47u | ||
| C26 | 100u | 100u | ||
| Diodes 1 | ||||
| D1 | 1N400X | 1N400X | ||
| Transistors 1 | ||||
| Q1 | BC550 | BC550 | ||
| ICs 5 | ||||
| U2 | 4558 | 4558 | ||
| U1 | NE5534 | NE5534 | ||
| U3 | TL072 | TL072 | ||
| U4 | TL072 | TL072 | ||
| U5 | TL072 | TL072 | ||
| Potentiometers 8 | ||||
| RV1 | B10k | B10k | ||
| RV2 | B10k | B10k | ||
| RV3 | B10k | B10k | ||
| RV4 | B10k | B10k | ||
| RV5 | B10k | B10k | ||
| RV6 | B10k | B10k | ||
| RV7 | B10k | B10k | ||
| RV8 | B10k | B10k | ||
Other boards based on the Boss GEB-7 Bass Equalizer
- Boss GEB-7 Equalizer Dirtbox Layouts