1590BB · 2 knobs
From the vendor
NOTE: This does not include the DIP switch options recently added to the original. A behemoth of bass fuzz. If you want to take down the walls at a molecular level, this is the fuzz for you. A bass fuzz at heart, this will work just as well with guitar, throwing out massive, saturated doomy sludge with abandon. Take control of the madness with controls for: • INPUT - input signal level - higher = more saturation • MORE FK - how much more gain and volume you want when you kick in the second footswitch • OUTPUT - master volume • SLOPE - essentially your tone control, adjusting the frequency balance • NOTCH - cut your mids or leave them in • SHIFT - moves the cut-off frequency of the notch The last three controls are very interactive. The pedal this is based on had a three-way switch for the shift control. This version can be built with a three-way toggle switch or a pot that will give you much more control. Board-mounted pots (and switch if you're using one) make this a quick, simple build considering the amount of controls. Coupled with the seperate daughterboard for the footswitches, connected to the main circuit by a 7-way ribbon cable), this is as neat as it gets. Only six off-board wired to connect. The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs. If you want the PCBs without parts there's a link for that at the bottom of the page. Partial kit: PCBs, all board-mounted components (not footswitches), 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. 1590BB Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included. Builds are only available with full kits including enclosures. Please choose appropriate knobs. Inspired by: Megalith Difficulty: Medium PCB size: 80 x 40mm / 80 x 20mm Knobs required: 5 / 6 Enclosure: 1590BB 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 32 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| R1 | 100K | 100k | ||
| R2 | 4K7 | 4.7k | ||
| R3 | 47K | 47k | ||
| R4 | 47K | 47k | ||
| R5 | 10K | 10k | ||
| R6 | 51K | 51k | ||
| R7 | 33K | 33k | ||
| R8 | 330K | 330k | ||
| R9 | 51K | 51k | ||
| R10 | 4M7 | 4.7M | ||
| R11 | 51K | 51k | ||
| R12 | 1M | 1M | ||
| Capacitors 13 | ||||
| C1 | 22n | 22n | ||
| C2 | 4n7 | 4.7n | ||
| C3 | 1n | 1n | ||
| C4 | 10n | 10n | ||
| C5 | 22n | 22n | ||
| C7 | 470n | 470n | ||
| C8 | 10u | 10u | elec | |
| C9 | 47u | 47u | elec | |
| C10 | 47u | 47u | elec | |
| C11 | 47u | 47u | elec | |
| C12 | 47u | 47u | elec | |
| C13 | 47u | 47u | elec | |
| C14 | 100u | 100u | elec | |
| Diodes 2 | ||||
| D1 | 3mm | 3MM | ||
| D2 | 1N4001 | 1N4001 | ||
| Transistors 3 | ||||
| Q1 | BC550 | BC550 | ||
| Q3 | BC550 | BC550 | ||
| Q2 | 2N5088 | 2N5088 | ||
| Potentiometers 2 | ||||
| MORE | 5KB | B5k | Potentiometer | |
| SHIFT | 100KB | B100k | Potentiometer | |