GUITAR RECONSTRUCTION Michael C. wells EKU, Dept. of Technology, CEN.
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Transcript of GUITAR RECONSTRUCTION Michael C. wells EKU, Dept. of Technology, CEN.
GUITAR RECONSTRUCTION
Michael C. wellsEKU, Dept. of Technology, CEN
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OUTLINE
Topics to be covered: Motivation behind Guitar
Reconstruction Background Design of Guitar Design of Effects Assembly Troubleshooting (Mostly the Effects) Final Result
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MOTIVATION
Obvious Motivation Guitarist for nearly
9 years No pre-existing
knowledge of guitar electronics
Future Applications
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MOTIVATION
Computer Science Major Programming Computer
Systems CSC 370 and
400 Web Project
CSC 440
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INTRODUCTION
Never worked with Guitar Electronics
Familiar with the very basic guitar electronics. Guitar draws power from amp Effects are powered separately Guitar pickups are magnets Potentiometers used for
volume/tone
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INTRODUCTION
Research definitely required Lutherie – Building Electric Guitars by Martin
Koch Covers full guitar construction. Choosing Wood to
Choosing Strings. Fairly light electronics section.
http://www.youtube.com/watch?v=t3gkVmVYujs
Video showing the reconstruction of the same type of Guitar used in Project.
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INTRODUCTION
www.tonepad.com Ideal resource for FX Projects
The actual guitar Electronics were not working Not even sure the exact type
(squier?) Tuning Pegs damaged eBay Purchase, unsure the actual
value. Missing several pieces of hardware
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PROBLEM STATEMENT
Rebuilding an Electric Guitar and including additional functionality. Guitar Effects crafted onboard is
an obvious choice for functionality.
Which Effect? Additional Functionality?
(Killswitch, etc.)
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PROPOSED SOLUTION Which effect to create?
Original Idea: Wah-Wah Pedal Pros/Cons
Second Idea: Fuzz Pedal (old distortion)
Pros/Cons Finalized Idea: MXR Distortion+
Pros/Cons Guitar Needs
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PROPOSED SOLUTION
Guitar in decent shape
Needed to solder a select few wires
Electronics replacement too expensive
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PROPOSED SOLUTION
Guitar finished early on
Tuning pegs and other hardware replacement simple
Block off tremolo system.
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PROPOSED SOLUTION
Tonepad.com Multiple Layouts
for MXR Distortion Plus
Parts Recommend http://www.smallb
earelec.com
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PROPOSED SOLUTION The MXR
Distortion Plus Well Known
Distortion Unit Used by Randy
Rhodes, Jerry Garcia, and others
Easily Available Schematics
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PROPOSED SOLUTIONMXR Distortion Plus w/ 741 IC
MXR Distortion Plus w/ 4558 IC
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PROPOSED SOLUTION
Purchased all parts for MXR Distortion Plus w/ 4558 IC
Purchased the pre-made PCB for the unit with a 741 IC.
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PROPOSED SOLUTIONLayout with IC 741 Layout with IC 4558
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PROPOSED SOLUTION Breadboard
Failures, starting with 4558.
Signal not being sent.
True Bypass (DTDP Switch) works with interference
Frustration
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PROPOSED SOLUTION
Late nights thinking only about electronics.
Perhaps the Grounds
What is a “Jack Shield Connector”?
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PROPOSED SOLUTION
Research through Google led me to Wikipedia
Picture led to understanding
Further research explained what I was missing.
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PROPOSED SOLUTIONMono Jack on Guitar
Purchased “Stereo” Jack
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PROPOSED SOLUTION
Stereo Jacks require Tip-Ring-Sleeve. Label from
SmallBearElec My
Understanding Replace with
Mono Jacks.
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PROPOSED SOLUTION
Distortion Unit worked after second rebuild
Unit has very “basic” distortion sound
Video will help in explanation.
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PROPOSED SOLUTION
Conversion to PCB?
Simple, but space limitations in guitar.
Unit small; pots and off-board components large
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RESULTS
Working Electric Guitar
Working Distortion Pedal
Include lots of images & relevant multimedia on (no dancing pink elephants)
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CONCLUSIONS
Project and my workplace No relationship expect
Project and my hobby Very close relationship Will definitely use in the future Save a lot of money So many more effects
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FUTURE WORK
Incorporate other guitar effects, or build a multi-effect pedal.
Implement more digital applications
Completely make a new instrument
Email: [email protected]
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REFERENCES Koch, Martin. Lutherie – Building Electric Guitars.
Available from http://www.buildyourguitar.com/books/ebooks/index.htm
Axh6877. (2010, January 25). Strat Rebuild for Under $500.mov. Video posted to http://www.youtube.com/watch?v=t3gkVmVYujs
Wikipedia. TRS connector. Available from http://en.wikipedia.org/wiki/TRS_connector
Pedalarea. MXR – Distortion+. Available from http://www.pedalarea.com/mxr_distortion.htm
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ACKNOWLEDGEMENTS
All photos and videos provided by presenter except where noted. Slide 12: Photo from
http://www.pedalarea.com/mxr_distortion.htm
Slide 14, 16, 18: All Photos from http://www.tonepad.com
Slide 19: Photo from http://en.wikipedia.org/wiki/File:Jack_plug.png