125B · 5 knobs
Perelandra DeluxeBoost / Overdrive
Based on the Xotic BB Preamp· 3 other boards clone it
- Category
- Overdrive· Boost, overdrive
- Controls
- Gain · Treble · Bass · Mid · Level
- Difficulty
- Intermediate
- Price
- $12.50in stock
From the vendor
A flexible drive pedal that can go from clean volume boost to smooth overdrive. Includes a 2-band tone stack for treble & bass as well as a clipping diode switch and midrange tone control.
The Perelandra Deluxe Boost / Overdrive is a recreation of the Xotic BB Preamp, a flexible tone machine that lets you go from a clean boost to a nice smooth overdrive with a 3-band EQ to shape the tone and three clipping options.
This is an expanded version of the original Perelandra, developed based on direct traces of several BB variants. Modifications have been incorporated from the “Comp” and “MB” (mid boost) custom shop models. Each of these modifications can be set to a position that mimics the stock circuit, so while you now have additional tone-shaping tools available, the original tone of the BB Preamp is unaffected.
The Perelandra Deluxe does not replace the original Perelandra, which is a simpler build with fewer controls and components. The original Perelandra also has the option to build the Bass BB Preamp variant which the Deluxe does not cover.
Note: This project uses a type of capacitor that has been temporarily discontinued by WIMA. Please see our news article about the issue and the substitution spreadsheet for project-specific recommendations. We are stocking an equivalent from Kemet in the mean time. The build document has not yet been updated to reflect this.
Schematic
The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 69 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 26 | ||||
| R1 | 1k | 1k | Metal film resistor, 1/4W | |
| R2 | 470k | 470k | Metal film resistor, 1/4W | |
| R3 | 10k | 10k | Metal film resistor, 1/4W | |
| R4 | 10k | 10k | Metal film resistor, 1/4W | |
| R5 | 10k | 10k | Metal film resistor, 1/4W | |
| R6 | 4k7 | 4.7k | Metal film resistor, 1/4W | |
| R7 | 1k | 1k | Metal film resistor, 1/4W | |
| R8 | 10k | 10k | Metal film resistor, 1/4W | |
| R9 | 220R | 220 | Metal film resistor, 1/4W | |
| R10 | 1k | 1k | Metal film resistor, 1/4W | |
| R11 | 1k | 1k | Metal film resistor, 1/4W | |
| R12 | 47k | 47k | Metal film resistor, 1/4W | |
| R13 | 10k | 10k | Metal film resistor, 1/4W | |
| R14 | 47k | 47k | Metal film resistor, 1/4W | |
| R15 | 4k7 | 4.7k | Metal film resistor, 1/4W | |
| R16 | 4k7 | 4.7k | Metal film resistor, 1/4W | |
| R17 | 33k | 33k | Metal film resistor, 1/4W | |
| R18 | 10k | 10k | Metal film resistor, 1/4W | |
| R19 | 470k | 470k | Metal film resistor, 1/4W | |
| R20 | 10k | 10k | Metal film resistor, 1/4W | |
| R21 | 470R | 470 | Metal film resistor, 1/4W | |
| R22 | 100k | 100k | Metal film resistor, 1/4W | |
| R23 | 10k | 10k | Metal film resistor, 1/4W | |
| R24 | 10k | 10k | Metal film resistor, 1/4W | |
| RPD | 1M | 1M | Metal film resistor, 1/4W | Input pulldown resistor. |
| LEDR | 4k7 | 4.7k | Metal film resistor, 1/4W | LED current-limiting resistor. Adjust value to change LED brightness. |
| Capacitors 19 | ||||
| C1 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C3 | 47pF | 47p | MLCC capacitor, NP0/C0G | |
| C4 | 47n | 47n | Film capacitor, 7.2 x 2.5mm | |
| C5 | 220n | 220n | Film capacitor, 7.2 x 2.5mm | |
| C6 | 220n | 220n | Film capacitor, 7.2 x 2.5mm | |
| C7 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C8 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C9 | 150pF | 150p | MLCC capacitor, NP0/C0G | |
| C10 | 33n | 33n | Film capacitor, 7.2 x 2.5mm | |
| C11 | 33n | 33n | Film capacitor, 7.2 x 2.5mm | |
| C12 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C13 | 4n7 | 4.7n | Film capacitor, 7.2 x 2.5mm | |
| C14 | 10uF | 10u | Electrolytic capacitor, 5mm | |
| C15 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C16 | 10uF | 10u | Electrolytic capacitor, 5mm | |
| C17 | 47uF | 47u | Electrolytic capacitor, 5mm | Reference voltage filter capacitor. |
| C18 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Power supply filter capacitor. |
| C19 | 100n | 100n | MLCC capacitor, X7R | Power supply filter capacitor. |
| Diodes 7 | ||||
| D1 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| D2 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D3 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D4 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D5 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D6 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D7 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| Transistors 2 | ||||
| Q1 | 2N5088 | 2N5088 | BJT transistor, NPN, TO-92 | Substitute. Original uses 2SC1815. |
| Q2 | 2N5088 | 2N5088 | BJT transistor, NPN, TO-92 | Substitute. Original uses 2SC1815. |
| ICs 2 | ||||
| IC1 | JRC4558D | JRC4558D | Operational amplifier, DIP8 | |
| IC2 | JRC4558D | JRC4558D | Operational amplifier, DIP8 | |
| Potentiometers 4 | ||||
| GAIN | 1MB | B1M | 16mm right-angle PCB mount pot | |
| BASS | 50kB | B50k | 16mm right-angle PCB mount pot | |
| MID | 20kW | W20k | 16mm right-angle PCB mount pot | Modification from “MB” custom shop model. |
| LEVEL | 100kB dual | 100KB DUAL | 16mm right-angle PCB mount pot | Linear taper, dual right-angle PCB mount. |
| Switches 2 | ||||
| COMP | SPDT cntr off | SPDT CNTR OFF | Toggle switch, SPDT on-off-on | Modification from “Comp” custom shop model. |
| FSW | 3PDT | 3PDT | Stomp switch, 3PDT | |
| LEDs 1 | ||||
| LED | 5mm | 5MM | LED, 5mm, red diffused | |
| Jacks & sockets 5 | ||||
| IC1-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IC2-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IN | 1/4" mono | 1/4" MONO | 1/4" phone jack, closed frame | Switchcraft 111X or equivalent. |
| OUT | 1/4" mono | 1/4" MONO | 1/4" phone jack, closed frame | Switchcraft 111X or equivalent. |
| DC | 2.1mm | 2.1MM | DC jack, 2.1mm panel mount | Mouser 163-4302-E or equivalent. |
| Hardware 1 | ||||
| ENC | 125B | 125B | Enclosure, die-cast aluminum | Can also use a Hammond 1590N1. |
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