Enclosure not stated · 7 knobs
Hybrid EQ
Based on the Friedman BE-OD· 7 other boards clone it
- Category
- EQ / Filter· Pedal Development Tool
- Controls
- Bass · Mids · Treble · Volume · Presence · Deep · Mid
- Difficulty
- Advanced
- Price
- €7.90out of stock
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From the vendor
Project overview
Based on the EQ section of the REVV G3 and G4 present on our Revolution III and IV. Combines a Baxandall section for the bass and treble frequencies with an active mid-control section.
Introduction
In this project, we have included a Volume trim pot instead of the vol pot on the Revv. This could be bypassed, or you can connect an external pot through the numeric PADS (1, 2/OUT, 3).
Controls
• Bass
• Mid
• Treble
For further analysis on REVV´s circuit take a look at this thread on Free Stomp Boxes Forum.
For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.
EQ Development Tool – Building Docs
Hybrid EQ – Drilling template
Schematic
The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 51 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| R1 | 2K2 | 2.2k | ||
| R2 | 33K | 33k | ||
| R3 | 33K | 33k | ||
| R4 | 2K2 | 2.2k | ||
| R5 | 470K | 470k | ||
| R6 | 2K2 | 2.2k | ||
| R7 | 2k2 | 2.2k | ||
| R8 | 22K | 22k | ||
| R9 | 100K | 100k | ||
| R10 | 2K2 | 2.2k | ||
| R11 | 150k | 150k | ||
| R12 | 100k | 100k | ||
| R13 | 20K | 20k | ||
| R14 | 22K | 22k | ||
| R15 | 2k2 | 2.2k | ||
| R22 | 10K | 10k | ||
| R23 | 10K | 10k | ||
| R16 | 20K | 20k | ||
| R17 | 1K5 | 1.5k | ||
| Capacitors 17 | ||||
| C19 | 22uf | 22u | ||
| C1 | 10n | 10n | ||
| C2 | 4n7 | 4.7n | ||
| C3 | 22n | 22n | ||
| C4 | 220n | 220n | ||
| C5 | 2n2 | 2.2n | ||
| C6 | 10n | 10n | ||
| C7 | 220n | 220n | ||
| C8 | 2n2 | 2.2n | ||
| C10 | 100n | 100n | ||
| C9 | 10u | 10u | ||
| C13 | 2u2 | 2.2u | ||
| C22 | 10u | 10u | ||
| C11 | 220nf | 220n | ||
| C14 | 100n | 100n | ||
| C12 | 100u | 100u | ||
| C15 | 22u | 22u | ||
| Diodes 1 | ||||
| D1 | 1n5817 | 1N5817 | ||
| ICs 3 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | TL072 | TL072 | ||
| IC3 | TLO74 | TLO74 | ||
| Potentiometers 9 | ||||
| BASS | 100KC | C100k | Potentiometer | |
| MIDS | 100KC | C100k | Potentiometer | |
| TREBLE | 100KB | B100k | Potentiometer | |
| VOL | 50KA | A50k | Potentiometer | |
| PRESENCE | 10K | 10k | Potentiometer | |
| DEEP | 25KC | C25k | Potentiometer | |
| MID | 25KB | B25k | Potentiometer | |
| PRES | 25KC | C25k | Potentiometer | |
| VOLUME | A50K | A50k | Potentiometer | |
| LEDs 2 | ||||
| LED1 | 3mm LED | 3MM LED | ||
| LED2 | 3mm LED | 3MM LED | ||
Other boards based on the Friedman BE-OD
- Tempest Aion FX · 125B · $12.50
- BE-My-OD Five Cats Pedals · 1590BB · £5.00
- Active EQ PCB Guitar Mania · €7.90
- Amp Tone Stack + Gain Recovery PCB Guitar Mania · €7.90
- Falcon EQ PCB Guitar Mania · 125B · €7.90
- Freeman BE-OD PCB Guitar Mania · 125B · €9.90
- Freeman Supreme PCB Guitar Mania · 1590BB · €11.90