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PorkBarrel24
PorkBarrel24
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Build Level: Intermediate
Based On: Boss® CE-2™
The 2024 version of the PorkBarrel has no circuit changes and some minor layout adjustments.
The PCB has been converted from a 2-layer to 4-layer design for low noise operation.
The Pork Barrel is a clone of the classic Boss® CE-2™. The CE-2™ has a signature sound and
been a staple of many guitar and bass pedal boards for decades. Next to the EHX Small Clone, it is
one of the most instantly recognizable chorus effects out there. Even if you don't like chorus, this is
one of the best analog ones ever made.
The Pork Barrel is designed to utilize several different BBD types (MN3207 or MN3007) depending
on availability and price. Minimal modifications are required to set the build up for these different
BBDs, and this will be explained in detail later on in this document. A BLEND control mod has also
been added. This allows for both a chorus and vibrato effect (by eliminating the dry signal). It is
completely optional.
•
RATE: Chorus speed from slow to fast.
•
DEPTH: Chorus depth from min to max.
•
BLEND: Mix of dry, chorus and vibrato. CCW is dry (no modulation), 1/4 up to middle is chorus
and fully CW is vibrato.
•
T1: Sets he bias of the chorus effect.
Further Study:
https://www.electrosmash.com/boss-ce-2-analysis
Terms of Use:
You are free to use purchased PorkBarrel24 circuit boards for both DIY and small commercial operations. You may not offer PorkBarrel24 PCBs for
resale or as part of a "kit" in a commercial fashion. Peer to peer re-sale is fine, though.
Technical assistance
for is available via the
available to respond via email in a timely and continuous manner, and (2) posting technical problems and solutions in the forum creates a record from which other
members may benefit.
All copyrights and registered trademarks are property of their original owners. Any mention of trademarked or intellectual properties in this documents is purely for
comparative purposes.
Overview
Controls
madbeanpedals
forum. Please go there rather than emailing me for personal assistance. This is because (1) I'm not always
Last Updated:
August 18, 2024 10:35 AM
© 2024
madbeanpedals
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Table of Contents
Related Manuals for madbeanpedals PorkBarrel24
Summary of Contents for madbeanpedals PorkBarrel24
- Page 1 Terms of Use: You are free to use purchased PorkBarrel24 circuit boards for both DIY and small commercial operations. You may not offer PorkBarrel24 PCBs for resale or as part of a “kit” in a commercial fashion. Peer to peer re-sale is fine, though.
-
Page 2: Parts Layout
Parts Layout PorkBarrel24 pg. 2... -
Page 3: Component Values
Component Values PorkBarrel24 pg. 3... - Page 4 Trace Layout - Outer Layers PorkBarrel24 pg. 4...
- Page 5 Trace Layout - Inner Layers PorkBarrel24 pg. 5...
- Page 6 Wiring The PorkBarrel24 is compatible with the SSBP bypass board available at madbeanpedals. There was no room for extra grounding pads on the layout so the ground wiring is slightly awkward here. PorkBarrel24 pg. 6...
- Page 7 1N5817 220k 100pF *see notes 100pF omit Transistors Q1 - Q5 2N5088 150k 4558 470pF CLOCK 470R TL022 100k Trimmer 100k Pots 470pF DEPTH 100kB RATE 100kB 47uF BLEND 50kA 100n 330k 47pF 100uF 100n 47uF 47uF PorkBarrel24 pg. 7...
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Page 8: Shopping List
25v min. 100uF Electrolytic 25v min. 1n914 1N5817 Zener *see notes 2N5088 4558 *see notes CLOCK *see notes TL022 or, TL062 Bourns 3362p or 6mm 100kB Right Angle, PCB Mount 16mm 50kA Right Angle, PCB Mount 16mm PorkBarrel24 pg. 8... - Page 9 If you want to try different speed ranges, socket C19 and try 82n or 68n in place of the 100n. If you want to modify the overall intensity of the chorus, play with the value of C21. Try 68pF or 82pF in place of 47pF. PorkBarrel24 pg. 9...
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Page 10: Circuit Voltages
VB supply voltage you can expect to see 2n5088 some variation in other readings. Consider MN3102 9.23 the chart here a guide, but not 100% accurate for every build. 9.16 4.35 4.66 2n5088 7.73 ~310mV ~420mV 8.77 ~3.3 2n5088 8.57 9.16 varies varies PorkBarrel24 pg. 10... -
Page 11: Drill Template
Coordinates are denoted in (X,Y), drill size format starting from the center (0,0) location of the enclosure. Tayda drill link: https://drill.taydakits.com/box-designs/new?public_key=WUpwalEzZzllY1Ftc1ZERE5OV0FaQT09Cg== Hardware (1) 1590B enclosure (2) 1/4” mono jacks (1) Slim 2.1mm DC jack (1) Standard 3PDT footswitch (1) 5mm LED PorkBarrel24 pg. 11... - Page 12 Build Pic PorkBarrel24 pg. 12...
- Page 13 Schematic PorkBarrel24 pg. 13...
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