1590B · 4 knobs
Fuzz Dog· regalblu
Regal Blu Drive
Based on the Mad Professor Royal Blue Overdrive· 2 other boards clone it
- Category
- Overdrive· OD/Dist/Preamp
- Difficulty
- Medium
- Price
- £36.00
- Tags
- od-distortion
From the vendor
'Transparent, dynamic...'. We've heard it all before, so let's cut to the chase.
Loosely based on a Tube Screamer, with a nicely tuned James (or Baxandall if you like, though that's active, not passive) tone stack. It just works.
Great range of grit, from light drive to full distortion. Stick it in front of a tube amp with light break-up and it'll make it sing.
The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.
If you opt for top mounted jacks you'll receive Lumberg sockets. The lugs need to be carefully bent back so they don't short on the enclosure. Be aware you'll be wiring in a tight space. Top jacks cannot be combined with battery provision.
If you want the PCB without parts there's a link for that at the bottom of the page.
Partial kit: PCB, all board-mounted components, pots.
Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.
Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.
Builds are only available with full kits including enclosures. Please choose appropriate knobs.
Inspired by: Royal Blue Overdrive
Difficulty: Medium
PCB size: 50 x 38mm
Knobs required: 4
Enclosure: 1590B
Direct Connect compatible (4-way)
Download the INSTRUCTION PDF
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 42 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 18 | ||||
| R1 | 200K | 200k | ||
| R2 | 15K | 15k | ||
| R3 | 1M | 1M | ||
| R4 | 1M | 1M | ||
| R5 | 1K | 1k | ||
| R6 | 5K6 | 5.6k | ||
| R7 | 5K6 | 5.6k | ||
| R8 | 2K | 2k | ||
| R9 | 330R | 330 | ||
| R10 | 5K6 | 5.6k | ||
| R11 | 1K | 1k | ||
| R12 | 47K | 47k | ||
| R13 | 5K6 | 5.6k | ||
| R14 | 1M | 1M | ||
| R15 | 1M | 1M | ||
| R16 | 3K6 | 3.6k | ||
| R17 | 15K | 15k | ||
| R18 | 2K | 2k | ||
| Capacitors 16 | ||||
| C1 | 4n7 | 4.7n | ||
| C2 | 100p | 100p | ||
| C3 | 100n | 100n | ||
| C4 | 4u7 | 4.7u | elec | |
| C5 | 1u | 1u | elec | |
| C6 | 220p | 220p | ||
| C7 | 100n | 100n | ||
| C8 | 22n | 22n | ||
| C9 | 220n | 220n | ||
| C10 | 3n3 | 3.3n | ||
| C11 | 22n | 22n | ||
| C12 | 47n | 47n | ||
| C13 | 1n | 1n | ||
| C14 | 1u | 1u | elec | |
| C15 | 1u | 1u | elec | |
| C16 | 100u | 100u | elec | |
| Diodes 1 | ||||
| D1 | 1N5817 | 1N5817 | ||
| ICs 1 | ||||
| IC1 | 4558 | 4558 | ||
| Potentiometers 4 | ||||
| BASS | 50KB | B50k | Potentiometer | |
| TREB | 50KB | B50k | Potentiometer | |
| GAIN | 1MA | A1M | Potentiometer | |
| VOL | 50KA | A50k | Potentiometer | |
| LEDs 2 | ||||
| D2 | 3mm Red LED | 3MM RED LED | ||
| D3 | 3mm Red LED | 3MM RED LED | ||
Other boards based on the Mad Professor Royal Blue Overdrive
- Mad Professor Royal Blue Overdrive Dirtbox Layouts
- Splendiferous Overdrive PedalPCB · 125B · $12.00