1590B · 3 knobs
From the vendor
Ever wanted to have a box full of that classic on-record 70s rock amp tone? Yeah, it's a pretty broad church, but you know the thing... Well here you go. Essentially a Cone Cranker into a Rat-style tone control and a handy gain recovery tagged at the back end. It just works. This thing really does the business when powered with 18V, so we've added an optional charge pump section. Include the toggle switch if you want to flip from 9V to 18V, or just hard wire it and play. 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, 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 and vertical-mount pots. Please choose appropriate knobs. Inspired by: Chrysalis Difficulty: Medium PCB size: 50 x 32mm Knobs required: 3 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 33 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| R1 | 4K7 | 4.7k | ||
| R2 | 2M2 | 2.2M | ||
| R3 | 2M2 | 2.2M | ||
| R4 | 8K2 | 8.2k | ||
| R5 | 470R | 470 | ||
| R6 | 1K | 1k | ||
| R7 | 470K | 470k | ||
| R8 | 47K | 47k | ||
| R9 | 10K | 10k | ||
| R10 | 1K | 1k | ||
| Capacitors 11 | ||||
| C1 | 1n | 1n | ||
| C2 | 100n | 100n | ||
| C3 | 220n | 220n | ||
| C4 | 100p | 100p | ||
| C5 | 4n7 | 4.7n | ||
| C6 | 100n | 100n | ||
| C7 | 100n | 100n | ||
| C8 | 4u7 | 4.7u | elec | |
| C9 | 10u | 10u | elec | |
| C10 | 100u | 100u | elec | |
| C11 | 100u | 100u | elec | |
| Diodes 6 | ||||
| D1 | BAT48 | BAT48 | ||
| D2 | BAT48 | BAT48 | ||
| D3 | BAT48 | BAT48 | ||
| D5 | 1N5817 | 1N5817 | ||
| D6 | 1N5817 | 1N5817 | ||
| D4 | 1N5817 | 1N5817 | ||
| Transistors 2 | ||||
| Q1 | MPSA18 | MPSA18 | ||
| Q2 | MPSA18 | MPSA18 | ||
| ICs 1 | ||||
| IC1 | 7660SEPA* | 7660SEPA | ||
| Potentiometers 3 | ||||
| DRIVE | 50KB | B50k | Potentiometer | |
| TONE | 25KB | B25k | Potentiometer | |
| VOL | 50KA | A50k | Potentiometer | |