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PERELANDRA BOOST / OVERDRIVE

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PROJECT NAME

PERELANDRA

BASED ON

EFFECT TYPE

PROJECT SUMMARY

DOCUMENT VERSION

Xotic BB Preamp

A flexible drive pedal that can go from clean volume boost to smooth overdrive. Includes a 2-band tone 
stack for treble & bass.

Boost / Overdrive

2.0.0 (2021-10-22)

BUILD DIFFICULTY

Easy

Actual size is 2.3” x 1.86” (main board) and 2.3” x 0.86” (bypass board).

This documentation is for the standard (non-deluxe) version of the project. Early PCBs of the 
Deluxe version were labeled “Perelandra V2” rather than “Perelandra Deluxe”. Please make sure 
your PCB matches the above image (four knobs and no toggles) before proceeding since the part 
numbering is different. The 

Perelandra Deluxe

 is available as a separate project.

IMPORTANT NOTE

Summary of Contents for PERELANDRA

Page 1: ... 0 2021 10 22 BUILD DIFFICULTY Easy Actual size is 2 3 x 1 86 main board and 2 3 x 0 86 bypass board This documentation is for the standard non deluxe version of the project Early PCBs of the Deluxe version were labeled Perelandra V2 rather than Perelandra Deluxe Please make sure your PCB matches the above image four knobs and no toggles before proceeding since the part numbering is different The ...

Page 2: ...sing a 1k and a 18k resistor The main difference between the BB Preamp and the AC or RC Booster is the presence of this Tube Screamer tone control stage to shape the tone going into the Baxandall EQ Version 2 of the Perelandra is a full redesign based on traces of several versions of the BB Preamp in 2021 The PCB supports the standard BB Preamp called the version 1 5 the AT Andy Timmons model and ...

Page 3: ...etal film resistor 1 4W Jumper for bass version R12 1k Metal film resistor 1 4W R13 1k Metal film resistor 1 4W R14 47k Metal film resistor 1 4W Use 22k for bass version R15 10k Metal film resistor 1 4W R16 47k Metal film resistor 1 4W R17 4k7 Metal film resistor 1 4W R18 4k7 Metal film resistor 1 4W R19 33k Metal film resistor 1 4W R20 10k Metal film resistor 1 4W R21 470k Metal film resistor 1 4...

Page 4: ...acitor 7 2 x 2 5mm C17 1uF Film capacitor 7 2 x 3 5mm Alternative to C18 for better quality output capacitor C18 OMIT Use 10uF for original output capacitor Recommended to use C17 instead except for bass version C19 47uF Electrolytic capacitor 5mm Power supply filter capacitor C20 100uF Electrolytic capacitor 6 3mm Reference voltage filter capacitor C21 100n MLCC capacitor X7R Power supply filter ...

Page 5: ...right angle PCB mount LED 5mm LED 5mm red diffused IN 1 4 stereo 1 4 phone jack closed frame Switchcraft 112BX or equivalent OUT 1 4 mono 1 4 phone jack closed frame Switchcraft 111X or equivalent DC 2 1mm DC jack 2 1mm panel mount Mouser 163 4302 E or equivalent BATT Battery snap 9V battery snap Optional Use the soft plastic type the hard shell type will not fit FSW 3PDT Stomp switch 3PDT ENC 125...

Page 6: ...s no version 2 but presumably they didn t feel the pre and post 2007 versions were different enough to warrant a whole number change in version as with the V2 AC RC Boosters The default parts list provided above is for version 1 5 the current production model To build the AT version just jumper one of the two diodes in each direction i e D3 and D4 Bass version The Bass BB Preamp was released in 20...

Page 7: ...R 100k GND VA GND JRC4558D JRC4558D VA GND 150pF 47k 10k VB 1k 220n 220R GND VB VB VB VB 47n 4k7 VB 100kB 47k 10k 1uF 100kB VB 1k 100n 1n 1k 18k 1uF 1uF RPD D1 C20 GAIN 1 2 3 TREBLE 1 2 3 BASS 1 2 3 C21 R25 C19 R26 R1 C1 R2 Q1 R3 C2 R4 IC1A 2 3 1 C3 D3 D2 R5 R7 C5 R17 C11 C12 R18 R19 R20 C13 C14 6 5 7 IC1B C16 R21 Q2 R22 C18 R23 R24 8 4 2 3 1 IC2A 6 5 7 IC2B 8 4 C10 R16 R8 R12 C6 R11 C4 R6 D4 D5 V...

Page 8: ...f closed frame jacks like the Switchcraft 111X If you d rather use open frame jacks please refer to the Open Frame Jack Drill Template for the top side LED hole drill size assumes the use of a 5mm LED bezel available from several parts suppliers Adjust size accordingly if using something different such as a 3mm bezel a plastic bezel or just a plain LED x 0 y 1 20 ø15 32 x 0 775 y 1 20 ø5 16 CENTER...

Page 9: ...PERELANDRA BOOST OVERDRIVE 9 ENCLOSURE LAYOUT Enclosure is shown without jacks See next page for jack layout and wiring 125B ...

Page 10: ...IAGRAM 125B IN V GND N C N C OUT PCB IN GND V V JACK GND JACK OUT IN GND GND PCB OUT Shown with optional 9V battery If battery is omitted both jacks can be mono rather than one being stereo Leave the far right lug of the DC jack unconnected ...

Page 11: ... opinions of others Projects may be used for commercial endeavors in any quantity unless specifically noted No attribution is necessary though a link back is always greatly appreciated The only usage restrictions are that 1 you cannot resell the PCB as part of a kit without prior arrangement and 2 you cannot goop the circuit scratch off the screenprint or otherwise obfuscate the circuit to disguis...

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