1590B · 5 knobs
Fuzz Dog· EngChan
English Channel - Vox Top-Boost In A Box
Based on the English Channel· 1 other board clones it
- Category
- Boost· OD/Dist/Preamp
- Controls
- Volume · Master · Treble · Bass · Cut
- Difficulty
- Hard
- Price
- £39.60
- Tags
- od-distortion
From the vendor
From the excellent project at Run Off Groove, here's a box of Vox that, erm... rocks! Based on a '61 Vox AC30 Top Boost, this overdrive gives all the rich, sparkling break-up of that classic amp. Highly tweakable tone with Volume (Gain), Bass, Treble, Treble Cut and Master Volume controls, and trim pots on all the FETs for perfect biasing. All in a package that'll fit a 1590B. WARNING: This circuit requires precise biasing of the FETs, so a Digital Multimeter is required. It'll be all-but impossible to do it by ear, hence the difficulty rating. Pot spacing is 21mm - take that into account when choosing your knobs. Board-mounted pots for minimal wiring and easy enclosure mounting. 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 will not take a battery. Knobs are not included. Inspired by: English Channel Difficulty: Hard PCB size: 100 x 22mm Knobs required: 5 Enclosure: 1590B Download INSTRUCTION PDF
Schematic
The schematic is in the vendor's build document, page 2. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 43 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 17 | ||||
| R1 | 1M | 1M | ||
| R2 | 33K | 33k | ||
| R3 | 1K5 | 1.5k | ||
| R4 | 1K5 | 1.5k | ||
| R5 | 10K | 10k | ||
| R6 | 100K | 100k | ||
| R7 | 10K | 10k | ||
| R8 | 1M | 1M | ||
| R9 | 1K2 | 1.2k | ||
| R10 | 1M | 1M | ||
| R11 | 220K | 220k | ||
| R12 | 1K5 | 1.5k | ||
| R13 | 47R | 47 | ||
| R14 | 15K | 15k | ||
| R15 | 15K | 15k | ||
| R16 | 2K2 | 2.2k | ||
| R17 | 220K | 220k | ||
| Capacitors 16 | ||||
| C1 | 470p | 470p | ||
| C2 | 100p | 100p | ||
| C3 | 22u | 22u | elec | |
| C4 | 22u | 22u | elec | |
| C5 | 47p | 47p | ||
| C6 | 22n | 22n | ||
| C7 | 22n | 22n | ||
| C8 | 47n | 47n | ||
| C9 | 10n | 10n | ||
| C10 | 47n | 47n | ||
| C11 | 4n7 | 4.7n | ||
| C12 | 22u | 22u | elec | |
| C13 | 15n | 15n | ||
| C14 | 2n2 | 2.2n | ||
| C15 | 2n2 | 2.2n | ||
| C16 | 100u | 100u | elec | |
| Transistors 5 | ||||
| Q1 | J201 | J201 | ||
| Q2 | J201 | J201 | ||
| Q3 | J201 | J201 | ||
| Q4 | J201 | J201 | ||
| Q5 | J201 | J201 | ||
| Potentiometers 5 | ||||
| VOLUME | 500KA | A500k | Potentiometer | |
| MASTER | 100KA | A100k | Potentiometer | |
| TREBLE | 1MA | A1M | Potentiometer | |
| BASS | 1MA | A1M | Potentiometer | |
| CUT | 250KA | A250k | Potentiometer | |
Other boards based on the English Channel
- English Channel - Vertical Format Fuzz Dog · 1590B · £39.60