1590B · 1 knobs
Fuzz Dog· bbc
BBC Dumb
Based on the BBC-1 / JHS Fumble
- Category
- Boost
- Controls
- Bias
- Difficulty
- Easy
- Price
- £24.00
- Tags
- boost
From the vendor
Get yourself a little bit of that Dumble magic.
Here we have the BBC-1 - John Mayer's preamp buffer, recently replicated as the NotADumble clean channel.
Should work fine with any of the usual suspect FETs, but we care about you guys so have sourced the correct one, despite it being obsolete. Only available until we run out.
If you want the PCB without parts there's a link for that at the bottom of the page.
Partial kit: PCB, all board-mounted components), pots.
Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.
Enclosure (pre-drilled) is available as an option with full kits, and can take a battery if desired with footswitch positioned 22mm higher, closer to the controls. Knobs are not included.
Builds are only available with full kits including enclosure. Please choose appropriate knobs.
Inspired by: BBC-1 / JHS Fumble
Difficulty: Easy
PCB size: 50 x 25mm
Knobs required: 2
Enclosure: 1590B
Direct-Connect compatible (4-way)
Download the INSTRUCTION PDF
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 14 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| R1 | 100R | 100 | ||
| R2 | 1M5 | 1.5M | ||
| R3 | 1M | 1M | ||
| R5 | 5K6 | 5.6k | ||
| R6 | 100R | 100 | ||
| Capacitors 6 | ||||
| C1 | 100n | 100n | ||
| C2 | 100p | 100p | ||
| C3 | 100n | 100n | ||
| C4 | 100u | 100u | Electrolytic capacitor | |
| C5 | 4u7 | 4.7u | Electrolytic capacitor | |
| C6 | 10u | 10u | Electrolytic capacitor | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | ||
| Transistors 1 | ||||
| Q1 | J309* | J309 | ||
| Potentiometers 1 | ||||
| BIAS | 50K trimmer | 50K TRIMMER | ||