Enclosure not stated · 3 knobs
Catalinbread Galileo Mk. IIVerified
Based on the Catalinbread Galileo Mk. II· 4 other boards clone it
From the post
The Catalinbread Galileo emulates an Vox AC30 and a Rangemaster treble boost in one to give the user tones like Brian May of Queen. The Galileo Mk. II differs from the Mk. I with fewer controls and in a much more pedalboard-friendly enclosure. It's a bit stripped down from the original, but sounds fantastic, and some say it's easier to dial in tones on the Mk. II over the Mk. I. Comparing the schematic with the Catalinbread Sabbra Cadabra, the Galileo has a very similar structure. The input stage is similar (though not identical), the stacked JFET gain stages are nearly identical, as is the gain recovery stage after the tone control. Though, this makes sense since both are emulating British tube amps and Rangemaster variations. To board mount the pots, use right angle PCB mount types from the solder-side.
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 38 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 16 | ||||
| ×5 | 1M | 1M | read from the layout by eye | |
| ×4 | 1K | 1k | read from the layout by eye | |
| ×2 | 10K | 10k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 8.2K | 8.2k | read from the layout by eye | |
| ×2 | 2.2M | 2.2M | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 2.2K | 2.2k | read from the layout by eye | |
| ×1 | 680K | 680k | read from the layout by eye | |
| ×1 | 62K | 62k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| Capacitors 12 | ||||
| ×2 | 47pF | 47p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 4.7nF | 4.7n | read from the layout by eye | |
| ×2 | 10nF | 10n | read from the layout by eye | |
| ×2 | 22nF | 22n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 680nF | 680n | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×1 | 22uF | 22u | electrolytic; read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 6 | ||||
| Q1 | 2N2222 | 2N2222 | read from the layout by eye | |
| Q2 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q3 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q4 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q5 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Q6 | MPF4393 | MPF4393 | JFET; read from the layout by eye | |
| Potentiometers 3 | ||||
| Gain | C5K | C5k | Potentiometer | read from the layout by eye |
| Tone | A1M | A1M | Potentiometer | read from the layout by eye |
| Volume | B250K | B250k | Potentiometer | read from the layout by eye |
Other boards based on the Catalinbread Galileo Mk. II
- Catalinbread Galileo Mk. II Dirtbox Layouts
- The Queen PCB Guitar Mania · 125B · €11.90
- Bohemia PedalPCB · 125B · $8.00
- Catalinbread Galileo MKII Tagboard Effects