The Bone Ray Tone Stack & the 432 Hz Mystery - LET'S REPAIR! - EPISODE 49

Today the Tone Priest continues to improve the awesomeness of his 1967 Gibson GA-20 RVT guitar amplifier by adding a Bone Ray tone stack to the normal channel. Meanwhile, we ponder the inner mysteries of the 432 Hz tuning paradigm.

- Part 1: https://youtu.be/i_xzAWFU3eM
- Part 2: https://youtu.be/5vyl5Kyigtw

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- Schematic: https://schematicheaven.net/gibsonamps/ga20rvt.pdf

- Tone Stack Calculator: http://www.guitarscience.net/tsc/fender.htm#RIN=38k&R1=100k&RT=250k&RB=250k&RM=10k&RL=1M&C1=250p&C2=100n&C3=47n&RB_pot=LogA&RM_pot=Linear&RT_pot=LogA

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People we like - no affiliation, just channels I enjoy and learn a lot from:

The Squishy Guitar Project: https://www.youtube.com/channel/UCdOIsOWKupFbet1zQ8zr5Rg
Uncle Doug: https://www.youtube.com/user/Stratosaurus1
Brad the Guitologist: https://theguitologist.locals.com/ and https://www.youtube.com/user/electrictoothsyndrom
Rob Robinette: https://robrobinette.com/Amp_Stuff.htm
Mr. Carlson's Lab: https://www.youtube.com/c/MrCarlsonsLab/videos
Blueglow Electronics: https://www.youtube.com/c/BlueglowElectronics/videos
Vintage Guitar Amp Repairs & Online Guitar Teacher: https://www.youtube.com/@vintageguitaramp_guitarteacher/videos
Guitar C.P.R. https://www.youtube.com/@guitarc.p.r.9675/videos
Stuart guitarampguy: https://www.youtube.com/@stuartukguitarampguy5830/videos
Johan Sageborn: https://www.youtube.com/user/JohanSegeborn
Matthew Scott: https://www.youtube.com/c/MatthewScottmusic/videos
Fran Capitanelli: https://www.youtube.com/@francapitanelli9775
Dave's World of Fun Stuff: https://www.youtube.com/channel/UCOXNPo7CtnzzZ9A4GyQ6Tog
REXYLAB: https://www.youtube.com/c/REXYLAB/videos
SCAR-MY-GUITAR: https://www.youtube.com/user/scarmyguitar
ElectroBOOM: https://www.youtube.com/user/msadaghd
432 Hz: https://www.youtube.com/watch?v=Rt3EAPDn-Ug&pp=ygURcGF1bCA0MzJoeiBkYXZpZHM%3D
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Want to help the channel out? Below are some Amazon links to stuff I use. If you make a purchase using the links below I make a small commission:

- RG174 shielded cable: https://amzn.to/43ACGNH
- Wilkinson middle pickup: https://amzn.to/3AkZAfl
- Wilkinson Telecaster pickup set: https://amzn.to/41Q9bGt
- Resistor kit: https://amzn.to/3HPoNTk
- Capacitor kit, pico: https://amzn.to/3M1iYVg
- Capacitor kit, nano: https://amzn.to/3pjnmGl
- Electrolytic capacitor kit: https://amzn.to/3pl8WFn
- Diode kit: https://amzn.to/3VDjaxa
- Trimmer kit: https://amzn.to/42aTDhp
- Hookup wire: https://amzn.to/3nBqi0j
- Radius gauge set: https://amzn.to/41jhYAw
- Notched straight edge tool: https://amzn.to/40Wvuuh
- Radius sanding block: https://amzn.to/43gUgHb
- Volume pots: https://amzn.to/43jwUk6
- No load tone pots: https://amzn.to/3Kt35Vp
- Boomas: https://amzn.to/3zKOX5h
- 3 conductor power cable: https://amzn.to/3UtvhMz
- Hakko FX-888d soldering iron: https://amzn.to/3vR5OS1
- Multimeter: https://amzn.to/3kFo4v2
- Preamp Bible: https://amzn.to/3Y61Ukg
- Power amp Bible: https://amzn.to/40blbSV
- Hi-Fi Bible: https://amzn.to/3RiacTY
- Solder: https://amzn.to/3GeoT5h
- Solder wick: https://amzn.to/3Z1qZxw
- Switchcraft 1/4" jacks (mono, non shorting): https://amzn.to/3X2EaN5
- F/X pedal enclosures: https://amzn.to/3WWE0Ha

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This and all Tone Priest videos are for edu-tainment purposes only. Vacuum tube amplifiers can have lethal voltages in excess of 700 volts. Capacitors can retain a deadly charge even when an amplifier is turned off and unplugged. Videos are not instructional nor do they advocate anyone doing any kind of repairs on their gear. Nobody should do electrical work on anything for any reason ever. Keep your hands and belongings inside the car at all times.

tonepriest@gmail.com