Enclosure not stated · 3 knobs
Mad Professor Ruby Red BoosterVerified
Based on the Mad Professor Ruby Red Booster· 2 other boards clone it
From the post
A nice versatile booster here by Bjorn, with switchable buffered or true bypass switching. I have kept the buffer separate so those who just intend to use it true bypass don't have to bother with the extra components or board size.
Manufacturers info:
BJF design guitar booster/treble booster pedal with master volume
Mad Professor Ruby Red Booster (RRB) is a combination of two boosters and a switchable buffer.
The two boosters are based on the much sought after BJF Little Red Trebler and Red Rooster Booster, connected in that order and with a master volume control.
The RRB can be used as a treble booster, a clean boost or an overdrive unit or any combination of the above. Inside the pedal there is a switch for a high quality buffer. You can set the pedal for true bypass mode or "buffer on" in bypass mode. The Treble Booster is a fine-tuned booster for just the right treble frequency with carefully designed bandwidth and an optimized slope of bass cut.
The booster circuit is designed to overdrive the amplifier inputs from nice shimmer to heavy overdrive, thanks to the massive 40dB of boost. The booster is tuned so that it produces musical distortion by itself on higher boost settings.
You can control the total level of the two boosters with the Master Volume control and also use the Master Volume to achieve distortion from the unit.
The easy to use Mad Professor Ruby Red Booster must be the most versatile high quality booster on market. Build the Mad Professor way: small footprint and big tone.
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 30 rows
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Check before you build · 3 values the reader of this layout was not sure of
- 14K7 (nine of them on the booster board): printed clearly, unusual value
- 2K61 on the booster board left of Q1: printed clearly, unusual value
- Volume pot: the legend calls it Volume 50K Log, the board wires are labelled Master 1-3
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×2 | 4K7 | 4.7k | read from the layout by eye | |
| ×3 | 470R | 470 | read from the layout by eye | |
| ×9 | 14K7 | 14.7k | read from the layout by eye | |
| ×3 | 1M | 1M | read from the layout by eye | |
| ×1 | 470K | 470k | read from the layout by eye | |
| ×1 | 2K61 | 2.61k | read from the layout by eye | |
| ×1 | 2K | 2k | read from the layout by eye | |
| ×1 | 1K5 | 1.5k | read from the layout by eye | |
| ×1 | 6K8 | 6.8k | read from the layout by eye | |
| ×3 | 2M2 | 2.2M | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| Capacitors 8 | ||||
| ×2 | 100p | 100p | read from the layout by eye | |
| ×3 | 1n | 1n | read from the layout by eye | |
| ×1 | 4n7 | 4.7n | read from the layout by eye | |
| ×3 | 47n | 47n | read from the layout by eye | |
| ×2 | 470n | 470n | read from the layout by eye | |
| ×3 | 1u | 1u | read from the layout by eye | |
| ×3 | 22u | 22u | electrolytic; read from the layout by eye | |
| ×1 | 100u | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 4 | ||||
| Q1 | 2N5952 | 2N5952 | JFET; read from the layout by eye | |
| Q2 | 2N5952 | 2N5952 | JFET; read from the layout by eye | |
| Q3 | 2N5952 | 2N5952 | JFET; read from the layout by eye | |
| Q4 | 2N5952 | 2N5952 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| IC | NE5534 | NE5534 | buffer board; read from the layout by eye | |
| Potentiometers 3 | ||||
| Treble | B50K | B50k | Potentiometer | read from the layout by eye |
| Boost | A500K | A500k | Potentiometer | read from the layout by eye |
| Volume | A50K | A50k | Potentiometer | wires labelled Master; read from the layout by eye |
| Switches 1 | ||||
| True Bypass / Buffer | DPDT on/on | DPDT ON/ON | toggle; read from the layout by eye | |
Other boards based on the Mad Professor Ruby Red Booster
- Mad Professor Ruby Red Booster Dirtbox Layouts
- Mad Professor Ruby Red Booster Revolution Deux