Enclosure not stated · 3 knobs
Ramble FX Marvel Drive (version 1)Verified
Based on the Ramble FX Marvel Drive (version 1)
- Category
- Preamp / Amp-in-a-box
- Build
- Perfboard
- Layout
- Verified · Effects Layouts (blog) marks it as built and working
- Tags
- Amp Emulator, Distortion, Overdrive, Ramble FX
From the post
One of the many Plexi-in-a-pedal options out there, the Marvel Drive has parallel input stages allowing you to create your own blend between the normal "channel" and the treble "channel." Gearmandude can show you better than I can try to explain it:
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 28 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
- 50K fixed resistors at the right edge (two, beside the 100nF): printed clearly, unusual value
- small electrolytic right of centre reads 1uF; the mark before the 1 is taken as the polarity stripe, not a decimal point (.1uF)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×4 | 1M | 1M | read from the layout by eye | |
| ×2 | 33K | 33k | read from the layout by eye | |
| ×2 | 470K | 470k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 50K | 50k | read from the layout by eye | |
| ×1 | 2.7K | 2.7k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 820Ω | 820 | read from the layout by eye | |
| Capacitors 10 | ||||
| ×3 | 2.2nF | 2.2n | read from the layout by eye | |
| ×3 | 180pF | 180p | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 680nF | 680n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 100pF | 100p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| ×1 | 330uF | 330u | electrolytic; read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | 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 3 | ||||
| Treble | A1M | A1M | Potentiometer | read from the layout by eye |
| Normal | A1M | A1M | Potentiometer | read from the layout by eye |
| Master | A25K | A25k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×3 | 50K | 50k | read from the layout by eye | |