1590B · 3 knobs
Fuzz Dog· HeavScr
Heavy Screamer
Based on the Fortin modded 808 Tube Screamer
- Category
- Overdrive· OD/Dist/Preamp
- Controls
- Gain · Tone · Vol
- Difficulty
- Easy
- Price
- £31.20
- Tags
- od-distortion
From the vendor
Yet Another Tube Screamer, sure...
This one does something a little different, and is perfect for all you high-gain junkies.
The differences between this and a standard 808 are apparent when running it on its own into a clean amp. Lots more output, more saturation and accentuated upper mids. Where it really does the business is pushing a gainy amp. Here the extra boost and mids start to sing, giving you that tight metal chug.
Supplied with board-mounted pots with 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 only available with full kits, and won't take a battery . Knobs are not included.
Builds are only available with full kits including enclosures. Please choose appropriate knobs.
Inspired by: Fortin modded 808 Tube Screamer
Difficulty: Easy
PCB size: 50 x 40mm
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 42 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 19 | ||||
| R1 | 2M2 | 2.2M | ||
| R2 | 1K | 1k | ||
| R3 | 510K | 510k | ||
| R4 | 10K | 10k | ||
| R5 | 10K | 10k | ||
| R6 | 1K8 | 1.8k | ||
| R7 | 33K | 33k | ||
| R8 | 220K | 220k | ||
| R9 | 1K | 1k | ||
| R10 | 10K | 10k | ||
| R11 | 220R | 220 | ||
| R12 | 1K | 1k | ||
| R13 | 1K | 1k | ||
| R14 | 510K | 510k | ||
| R15 | 10K | 10k | ||
| R16 | 10K | 10k | ||
| R17 | 10K | 10k | ||
| R18 | 10K | 10k | ||
| R19 | 10K | 10k | ||
| Capacitors 12 | ||||
| C1 | 47n | 47n | ||
| C2 | 1u | 1u | ||
| C3 | 51p | 51p | ||
| C4 | 220n | 220n | ||
| C5 | 220n | 220n | ||
| C6 | 1u | 1u | ||
| C7 | 100n | 100n | ||
| C8 | 100n | 100n | ||
| C9 | 10u | 10u | elec | |
| C10 | 100n | 100n | ||
| C11 | 100u | 100u | elec | |
| C12 | 100u | 100u | elec | |
| Diodes 5 | ||||
| D2 | 3mm | 3MM | ||
| D3 | 3mm | 3MM | ||
| D4 | 1N4148 | 1N4148 | ||
| D5 | 1N4148 | 1N4148 | ||
| D1 | 1N5817 | 1N5817 | ||
| Transistors 2 | ||||
| Q1 | 2SC1815 | 2SC1815 | ||
| Q2 | 2SC1815 | 2SC1815 | ||
| ICs 1 | ||||
| IC1 | 4558 | 4558 | ||
| Potentiometers 3 | ||||
| GAIN | 500KA | A500k | Potentiometer | |
| TONE | 20KW | W20k | Potentiometer | |
| VOL | 100KB | B100k | Potentiometer | |