1590B · 7 knobs
Diefet - Diezel VH4S SimulatorVerified
Based on the Diefet· 1 other board clones it
- Category
- Preamp / Amp-in-a-box
- Build
- Vero· 33×20· 48 cuts, 14 links
- Layout
- Verified · Tagboard Effects marks it as built and working
- Tags
- Amp Emulation, Distortion
From the post
With 7 pots this was never going to be put in a 1590B anyway and so I wasn't so concerned about keeping the size down, although I bet it could fit in a 125B and would be very impressed if someone did it. :o) I think most people will opt for a 1590BB though.
This is a project from techniguitare which has gone through a number of revisions over the years, with this version based on their 18V version of the circuit. Use the trimmers along the middle of the board to bias each JFET drain to half the supply voltage. The bottom right trimmer seems to alter the frequency of a high pass filter after Q3, and so will cut some low end. This wasn't in earlier version of the schematic which instead just had a 100K to ground, but I can't speak French and so maybe someone could tell me the reason for its inclusion.
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 47 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this layout was not sure of
- 220R at the right of IC2, upper right: small turned text, could be 220K
- Bias trimmers (100K x3, 470K x2): values read from the trimmer bodies, not confirmed by the legend
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| ×4 | 220K | 220k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×2 | 39K | 39k | read from the layout by eye | |
| ×2 | 2K2 | 2.2k | read from the layout by eye | |
| ×1 | 120K | 120k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 56K | 56k | 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 | 4K7 | 4.7k | read from the layout by eye | |
| ×1 | 470R | 470 | read from the layout by eye | |
| ×1 | 220R | 220 | read from the layout by eye | |
| Capacitors 17 | ||||
| ×2 | 47p | 47p | read from the layout by eye | |
| ×2 | 100p | 100p | read from the layout by eye | |
| ×3 | 220p | 220p | read from the layout by eye | |
| ×4 | 470p | 470p | read from the layout by eye | |
| ×1 | 680p | 680p | read from the layout by eye | |
| ×4 | 1n | 1n | read from the layout by eye | |
| ×1 | 3n3 | 3.3n | read from the layout by eye | |
| ×2 | 6n8 | 6.8n | read from the layout by eye | |
| ×1 | 10n | 10n | read from the layout by eye | |
| ×1 | 15n | 15n | read from the layout by eye | |
| ×4 | 22n | 22n | read from the layout by eye | |
| ×1 | 47n | 47n | read from the layout by eye | |
| ×2 | 100n | 100n | read from the layout by eye | |
| ×3 | 1u | 1u | drawn as film/box, not a can; read from the layout by eye | |
| ×2 | 10u | 10u | electrolytic; read from the layout by eye | |
| ×3 | 100u | 100u | electrolytic; read from the layout by eye | |
| ×1 | 470u | 470u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| ×2 | 1N4148 | 1N4148 | D1, D2; read from the layout by eye | |
| ×2 | 1N5817 | 1N5817 | D3, D4; read from the layout by eye | |
| D5 | 9V1 zener | 9V1 | read from the layout by eye | |
| Transistors 1 | ||||
| ×5 | J201 | J201 | Q1-Q5, JFET; read from the layout by eye | |
| ICs 2 | ||||
| IC1 | TL072 | TL072 | read from the layout by eye | |
| IC2 | ICL7660S | ICL7660S | read from the layout by eye | |
| Potentiometers 7 | ||||
| Gain | A100K | A100k | Potentiometer | read from the layout by eye |
| Treble | B220K | B220k | Potentiometer | read from the layout by eye |
| Bass | A1M | A1M | Potentiometer | read from the layout by eye |
| Mids | B22K | B22k | Potentiometer | read from the layout by eye |
| Presence | B22K | B22k | Potentiometer | read from the layout by eye |
| Deep | B10K | B10k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 2 | ||||
| ×3 | 100K | 100k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
Other boards based on the Diefet
- Diefet Dirtbox Layouts