Enclosure not stated
Sheepylove· PCB006
Celestial Screamer
Based on the hot rod Tube Screamer
- Category
- Overdrive· OD
- Price
- €10.00in stock
From the vendor
A great design by Celestial Engineering, aka Chuck D Bones. It takes all that is good with a Tube Screamer, and adds some great tone shaping abilities.
The main circuit is pretty flexible. There’s a boost upfront, followed by a low cut which lets you take out some of that bass when you slam the next gain stages. In between those is a hi-cut which lets you stop the high end from going wild. I look at these as the gain EQ.
After all that, there’s a Baxandall EQ stack! Adjust to your amp and go!
It’s a lot of knobs, but they all do the right things in the right places. It’s my choice when I want to tailor a TS tone.
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 52 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 22 | ||||
| R2 | 100 | 100 | ||
| R3 | 200k | 200k | ||
| R4 | 220k | 220k | ||
| R5 | 3M3 | 3.3M | ||
| R6 | 1M | 1M | ||
| R7 | 100k | 100k | ||
| R23 | 100k | 100k | ||
| R8 | 560 | 560 | ||
| R9 | 4k7 | 4.7k | ||
| R10 | 3k9 | 3.9k | ||
| R11 | 27k | 27k | ||
| R12 | 2k2 | 2.2k | ||
| R22 | 2k2 | 2.2k | ||
| R13 | 1k5 | 1.5k | ||
| R14 | 470 | 470 | ||
| R15 | 47k | 47k | ||
| R16 | 47k | 47k | ||
| R17 | 6k8 | 6.8k | ||
| R18 | 6k8 | 6.8k | ||
| R20 | 6k8 | 6.8k | ||
| R21 | 6k8 | 6.8k | ||
| R19 | 39k | 39k | ||
| Capacitors 13 | ||||
| C1 | 100u | 100u | ||
| C2 | 10u | 10u | ||
| C13 | 10u | 10u | ||
| C3 | 22n | 22n | ||
| C4 | 2u2 | 2.2u | ||
| C7 | 2u2 | 2.2u | ||
| C5 | 3n9 | 3.9n | ||
| C6 | 47p | 47p | ||
| C8 | 47n | 47n | ||
| C9 | 39n | 39n | ||
| C10 | 39n | 39n | ||
| C11 | 2n2 | 2.2n | ||
| C12 | 330p | 330p | ||
| Diodes 5 | ||||
| D1 | 1N5817 | 1N5817 | ||
| D3 | 1N4007 | 1N4007 | ||
| D5 | 1N4007 | 1N4007 | ||
| D4 | 1N4148 | 1N4148 | ||
| D6 | 1N4148 | 1N4148 | ||
| Transistors 1 | ||||
| Q1 | MMBF4393 | MMBF4393 | ||
| ICs 2 | ||||
| IC1 | TL072 | TL072 | Usual dual | |
| IC2 | TL072 | TL072 | Usual dual op-amp suspects can be used. 4558, etc. | |
| Potentiometers 8 | ||||
| POT1 | A100k | A100k | ||
| POT2 | C10k | C10k | ||
| POT3 | A500k | A500k | ||
| POT7 | A500k | A500k | ||
| POT4 | B50k | B50k | ||
| POT6 | B100k | B100k | ||
| POT8 | B10k | B10k | ||
| RV1 | 5k | 5k | ||
| LEDs 1 | ||||
| D2 | LED | LED | ||