1590B · 5 knobs
Black Forest - Uberschall EmulationVerified
Based on the Black Forest - Uberschall Emulation
- Category
- Preamp / Amp-in-a-box
- Build
- Vero· 21×19· 27 cuts, 9 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Amp Emulation, Distortion
From the post
Another one of the amp emulation circuits I'm collecting at the moment, this one based on the Bogner Uberschall by JOK3RX on freestompboxes. You could get this in a 1590B but with two stomps, a toggle and 5 pots it may even be a pain to put in a 125B, so as with the other recent amp sims I think most people will put this in a 1590BB.
Except Javi :o)
The effect is designed with a 9V supply in mind, but again I would strongly recommend trying this with a voltage doubler charge pump and seeing what you think about it at the higher voltage.
You're all going to have to get some more J201s in :o)
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 43 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 14 | ||||
| ×3 | 470K | 470k | read from the layout by eye | |
| ×3 | 68K | 68k | read from the layout by eye | |
| ×2 | 330K | 330k | read from the layout by eye | |
| ×2 | 1K5 | 1.5k | read from the layout by eye | |
| ×1 | 33K | 33k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 820R | 820 | read from the layout by eye | |
| ×1 | 100R | 100 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 1K8 | 1.8k | read from the layout by eye | |
| ×1 | 2K4 | 2.4k | read from the layout by eye | |
| ×1 | ? | ? | value not given; printed '? *', legend: socket and select the one that gives the best sound in both Boost positions; read from the layout by eye | |
| Capacitors 13 | ||||
| ×6 | 22n | 22n | read from the layout by eye | |
| ×3 | 2n2 | 2.2n | read from the layout by eye | |
| ×1 | 1n | 1n | read from the layout by eye | |
| ×1 | 470n | 470n | read from the layout by eye | |
| ×1 | 1u | 1u | read from the layout by eye | |
| ×1 | 22p | 22p | read from the layout by eye | |
| ×1 | 220p | 220p | read from the layout by eye | |
| ×1 | 270p | 270p | read from the layout by eye | |
| ×2 | 470p | 470p | read from the layout by eye | |
| ×1 | 2u2 | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 4u7 | 4.7u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| ×1 | 220u | 220u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| D1 | BAT85 | BAT85 | read from the layout by eye | |
| D2 | BAT85 | BAT85 | read from the layout by eye | |
| D3 | BAT85 | BAT85 | read from the layout by eye | |
| Transistors 5 | ||||
| Q1 | J201 | J201 | JFET; read from the layout by eye | |
| Q2 | J201 | J201 | JFET; read from the layout by eye | |
| Q3 | J201 | J201 | JFET; read from the layout by eye | |
| Q4 | J201 | J201 | JFET; read from the layout by eye | |
| Q5 | J201 | J201 | JFET; read from the layout by eye | |
| Potentiometers 5 | ||||
| Gain | A500K | A500k | Potentiometer | read from the layout by eye |
| Treble | A250K | A250k | Potentiometer | read from the layout by eye |
| Bass | A1M | A1M | Potentiometer | read from the layout by eye |
| Mids | B25K | B25k | Potentiometer | read from the layout by eye |
| Volume | A500K | A500k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×4 | 100K | 100k | bias Q1 to Q4 drains at 4.5-5V; read from the layout by eye | |
| Switches 2 | ||||
| Wide | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
| Boost | SPDT | SPDT | stomp (or DPDT for LED indication); read from the layout by eye | |