1590BB2
Sheepylove· PCB056
DayJ
Based on the Limetone Audio Jackal
- Category
- Distortion
- Price
- €15.00in stock
- Tags
- Distortion
From the vendor
This is a pedal with a lot of gain stages. It can do a bit, it's not the end-all for gain but it does well enough. You're going to get compression, low-end, and fun. It's lot of soldering and then you need to bias and adjust the internal trim pots. Finally, you can play with diodes to see if that makes a difference to you.
I labelled all the bias points with ~5V, but this is just a default. Similarly with the transistors, I used MMBFJ201 like the original, but other options are probably feasible. With the number of gain stages, you can play around a lot. Make 'em all hot, put a "cold clipper" in, craft the tone more to how you like it. The hard clipping diodes are LEDs in the original, but play around and see what works for you. I liked Ge and BAT42 when I tried them, cork sniffery at its best.
The internal trim pots are Resonance (low end), Presence (high end), and Balance (tone). Set the tone for your preference, then do the low-end and then presence.
It's a fun one, no exotic parts, just a lot of them. Take your time, make sure your solder flows, and enjoy yourself!
Uses a 1590BB2 enclosure.
Schematic
The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 87 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 28 | ||||
| R1 | 1M | 1M | ||
| R3 | 1M | 1M | ||
| R31 | 1M | 1M | ||
| R2 | 1k | 1k | ||
| R10 | 1k | 1k | ||
| R33 | 1k | 1k | ||
| R39 | 1k | 1k | ||
| R5 | 3k3 | 3.3k | ||
| R11 | 220k | 220k | ||
| R13 | 220k | 220k | ||
| R12 | 100k | 100k | ||
| R16 | 100k | 100k | ||
| R15 | 220R | 220 | ||
| R17 | 33k | 33k | ||
| R20 | 510k | 510k | ||
| R22 | 3k | 3k | ||
| R25 | 3k | 3k | ||
| R23 | 560R | 560 | ||
| R24 | 820R | 820 | ||
| R27 | 100R | 100 | ||
| R35 | 100R | 100 | ||
| R28 | 10k | 10k | ||
| R29 | 10k | 10k | ||
| R30 | 47k | 47k | ||
| R45 | 47k | 47k | ||
| R32 | 470R | 470 | ||
| R36 | 470R | 470 | ||
| R44 | 68k | 68k | ||
| Capacitors 29 | ||||
| C1 | 100n | 100n | ||
| C23 | 100n | 100n | ||
| C2 | 1u | 1u | ||
| C8 | 1u | 1u | ||
| C19 | 1u | 1u | ||
| C20 | 1u | 1u | ||
| C3 | 4n7 | 4.7n | ||
| C5 | 1n5 | 1.5n | ||
| C7 | 10n | 10n | ||
| C9 | 15n | 15n | ||
| C13 | 22n | 22n | ||
| C14 | 22n | 22n | ||
| C15 | 22n | 22n | ||
| C34 | 22n | 22n | ||
| C38 | 22n | 22n | ||
| C16 | 6n8 | 6.8n | ||
| C41 | 6n8 | 6.8n | ||
| C17 | 1u5 | 1.5u | ||
| C18 | 47n | 47n | ||
| C21 | 10u | 10u | ||
| C25 | 10u | 10u | ||
| C32 | 10u | 10u | ||
| C22 | 47u | 47u | ||
| C24 | 47u | 47u | ||
| C26 | 47u | 47u | ||
| C27 | 150n | 150n | ||
| C30 | 680n | 680n | ||
| C31 | 1n | 1n | ||
| C37 | 2n2 | 2.2n | ||
| Diodes 3 | ||||
| D1 | 1N5817 | 1N5817 | ||
| D2 | 1N5817 | 1N5817 | ||
| D3 | 1N5817 | 1N5817 | ||
| Transistors 6 | ||||
| Q1 | MMBFJ201 | MMBFJ201 | ||
| Q2 | MMBFJ201 | MMBFJ201 | ||
| Q3 | MMBFJ201 | MMBFJ201 | ||
| Q4 | MMBFJ201 | MMBFJ201 | ||
| Q5 | MMBFJ201 | MMBFJ201 | ||
| Q6 | MMBFJ201 | MMBFJ201 | ||
| ICs 4 | ||||
| U1 | TL072CP | TL072CP | ||
| U2 | TL072CP | TL072CP | ||
| U3 | TL072CP | TL072CP | ||
| U4 | ICL7660S | ICL7660S | ||
| Potentiometers 10 | ||||
| RV1 | A1M | A1M | ||
| RV2 | A1M | A1M | ||
| RV3 | B25k | B25k | ||
| RV4 | B250k | B250k | ||
| RV5 | A100k | A100k | ||
| RV6 | 25k | 25k | 15k on original | |
| RV9 | 25k | 25k | 15k on original | |
| RV10 | 25k | 25k | 15k on original | |
| RV7 | 25k | 25k | 18k on original | |
| RV8 | 50k | 50k | 22k on original | |
| Trimmers 3 | ||||
| T1 | 50k | 50k | ||
| T2 | 50k | 50k | ||
| T3 | 50k | 50k | ||
| Switches 1 | ||||
| SW5 | On/On | ON/ON | ||
| LEDs 3 | ||||
| D4 | Red LED | RED LED | Red LED is in stock | |
| D5 | Red LED | RED LED | Red LED is in stock unit, try anything! | |
| D11 | RED_LED | RED_LED | ||