Home
Contact

Resources

Projects

Design and Build

Maestro G-2 Project
Tracing, documenting, and duplicating a multi-effects unit from 1968. Demo and schematics included.
LV-100
Updating my lunchbox reverb prototype for small batch manufacturing
Optical Tremolo
A guitar effect built from an old record player
Tele-microphone
A rotary phone turned vocal effect and stage monitor
Bluetooth Tube Radio
Adding bluetooth functionality to an old tube radio
Lunchbox Reverb
A very capable spring reverb effect hidden in a stinky old lunch box
Dim Bulb Limiter
Building a switchable current limiter to keep my fuse budget in check. (It blinks too!)
Auto A/B Box
Finding a way to switch between two circuits without plugging or unplugging anything
Germanuim Fuzzrite
Tracing out a corrected schematic to right the Fuzzwrongs of the past and build a couple pedals

Repair

Bluetooth Record Player
A vibrant mustard record player from a school classroom gets a tune up and modern upgrade
Japanese Mystery Amp
A transformerless practice amp from an unknown Japanese manufacturer gets restored to working condition.
Super Reverb
Undoing a crazy mod on a blackface super reverb. This amp has been through a lot.
Roland RE-201
Restoring an almost totalled Space Echo
Tascam 48
Repairing an 8 track tape machine that won't record
Pro Reverb
Repairing a 60's Fender and adding a negative feedback switch
Summit Audio EQ
Fixing an abandoned mastering EQ unit
Rumble 25
Reviving a dead solid-state bass amp
Yamaha CR-420
Quick repair of a Yamaha stereo receiver
Vibrolux
Repair of an impressively preserved silverface that lost its reverb
Nikko NR-315
Repair of a flea market found amplifier
Pax I
Fixing a vaporizer that doesn't heat up
Lafayette Stereo-10
Recapping a flea market receiver

Miscellaneous

AT803b
Reverse engineering an Audio Technica lavalier microphone preamp
Comparator Fuzz
Using a comparator to create a fuzz effect for guitar
Head Shots
Looking at some eroded tape heads with a microscope
Pendulum Preamp
Reverse engineering a Pendulum single pickup preamp module

© Copyright 2023 Jacob Ellzey