1590B · 4 knobs
Fuzz Dog· tweed55
Tweed 55
Based on the Formula 55
- Category
- Distortion· OD/Dist/Preamp
- Controls
- Master · Pres · Tone · Vol
- Difficulty
- Medium
- Price
- £40.80
- Tags
- od-distortion
From the vendor
Gloriously detailed recreation of a Fender Tweed 5E3 Deluxe preamp.
Shape your signal into those classic US tones with accurate feel and response.
The toggle switch flips between cleaner vintage tweeds and a high gain tube hotrodded model. Sweet.
You can go for the simple to handle but slightly pricier through hole FETs, or if you're handy with little fiddly bits you can save some cash with SMT units.
The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.
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 (depending on selected options), 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 only available with full kits, and will not take a battery. Knobs are not included.
Builds are only available with full kits including enclosure and vertical-mount pots. Please choose appropriate knobs.
Inspired by: Formula 55
Difficulty: Medium
PCB size: 50 x 50mm
Knobs required: 4
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 50 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 24 | ||||
| R1 | 1M | 1M | ||
| R2 | 33K | 33k | ||
| R3 | 1M | 1M | ||
| R4 | 1M | 1M | ||
| R5 | 1K | 1k | ||
| R6 | 15K | 15k | ||
| R7 | 56K | 56k | ||
| R8 | 4K7 | 4.7k | ||
| R9 | 1M | 1M | ||
| R10 | 68K | 68k | ||
| R11 | 1M | 1M | ||
| R12 | 1M | 1M | ||
| R13 | 1K | 1k | ||
| R14 | 10K | 10k | ||
| R15 | 5K1 | 5.1k | ||
| R16 | 100R | 100 | ||
| R17 | 10K | 10k | ||
| R18 | 10K | 10k | ||
| R19 | 3K9 | 3.9k | ||
| R20 | 100R | 100 | ||
| R21 | 1M | 1M | ||
| R22 | 5K6 | 5.6k | ||
| R23 | 15K | 15k | ||
| R24 | 100R | 100 | ||
| Capacitors 15 | ||||
| C1 | 1u | 1u | ||
| C2 | 2u2 | 2.2u | ||
| C3 | 22u | 22u | elec | |
| C4 | 100n | 100n | ||
| C5 | 470p | 470p | ||
| C6 | 4n7 | 4.7n | ||
| C7 | 2u2 | 2.2u | ||
| C8 | 22u | 22u | elec | |
| C9 | 22n | 22n | ||
| C10 | 3n3 | 3.3n | ||
| C11 | 100n | 100n | ||
| C12 | 2u2 | 2.2u | ||
| C15 | 100n | 100n | ||
| C16 | 100u | 100u | elec | |
| C17 | 47u | 47u | elec | |
| Diodes 1 | ||||
| D3 | 1N5817 | 1N5817 | ||
| Transistors 5 | ||||
| Q1 | MBF4393/MMBF4393 | MBF4393/MMBF4393 | ||
| Q2 | MBF4393/MMBF4393 | MBF4393/MMBF4393 | ||
| Q3 | MBF4393/MMBF4393 | MBF4393/MMBF4393 | ||
| Q4 | MBF4393/MMBF4393 | MBF4393/MMBF4393 | ||
| Q5 | MBF4393/MMBF4393 | MBF4393/MMBF4393 | ||
| Potentiometers 4 | ||||
| MASTER | 250KA | A250k | Potentiometer | |
| PRES | 50KB | B50k | Potentiometer | |
| TONE | 1MA | A1M | Potentiometer | |
| VOL | 1MA | A1M | Potentiometer | |
| Switches 1 | ||||
| SW1 | DPDT | DPDT | ||