Enclosure not stated · 2 knobs
Royal RC-1 Effect MachineVerified
Based on the Royal RC-1 Effect Machine
- Category
- Wah / Envelope
- Controls
- Wah · Volume
- Build
- Vero· 14×12· 6 cuts, 5 links
- Layout
- Verified · Dirtbox Layouts marks it as built and working
- Tags
- Royal, Wah
From the post
The Royal line of effects was made in Tokyo, Japan in the early 70s by Thunder Electronics. Not much is known about the company but they had some own designs in their portifolio along with the casual Shin Ei superfuzz clone. Royal RC-1 Effect Machine was an inductorless wah which topology was based on fuzz face and a twin notch filter. It is not the most powerful or vocal wah but it does a decent job after a superfuzz just like in Royal RFC-1 Double Effect Machine. The layout and schematic is verified.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 15 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 250pF (left edge, rows D-E): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×2 | 47K | 47k | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| ×1 | 10K | 10k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 250pF | 250p | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×5 | 10uF | 10u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N2222 | 2N2222 | 2N2222, 2N3904 etc. (2SC828-R in original); read from the layout by eye | |
| Q2 | 2N2222 | 2N2222 | 2N2222, 2N3904 etc. (2SC828-R in original); read from the layout by eye | |
| Potentiometers 2 | ||||
| Wah | B50K | B50k | Potentiometer | 50kC if using rotary potentiometer; read from the layout by eye |
| Volume | B50K | B50k | Potentiometer | read from the layout by eye |