All books using the keywords: R.G. Keen

Updated May 24, 2023!! The V1083 Berkeley III Repair Supplement contains information helpful in repairing the Thomas Organ Vox V1083 "Berkeley III" guitar amplifier. It extends the more general how-it-works information contained in the Vox Owner's Safety Net with V1083-specific schematics, parts lists, board diagrams and other info on this one model. It is much more than a copy of the original factory schematics, and includes entirely redrawn schematics and board diagrams as well as working voltages taken from simulations of the circuits. This allowed sidestepping the occasional error in the original Thomas Organ service information. This update corrects some subtle mistakes and incons ...

A detailed repair supplement for the earliest of the Thomas Organ Vox amplifiers. This adds to the design and how-it-works information in the Vox Owner's Safety Net with detailed parts lists, schematics, debugging voltages, and advice on replacement parts. This supplement corrects the mistakes in the Thomas Vox factory service literature.

The Repair Supplement to the Vox Owner's Safety Net for the Vox Cambridge Reverb V1031 and V1032, and the electronically identical Berkeley II V1081. This manual covers detailed schematics, PCB diagrams, parts lists, parts substitutions and other information for repairing these vintage amps. It extends the design and overview information to the Vox Owner's Safety Net.

Want to design your own PCBs? Don't know where to start? This book's got you covered! It's a manual on how to think about where the parts go, not just what mouse moves to do. It is aimed specifically at someone who wants to convert a schematic diagram into a practical printed circuit board. The design process is explained from schematic parts all the way down to optimizing placement and routing. The most recent edition here includes not only through-hole parts but also extension to surface mount part layout. The author has designed PCBs for decades. You can do it too!

Repair or replace a missing footpedal switch for your USA Vox amplifier - a Beatle, Royal Guardsman, Viscount, Buckingham, Cambridge, Berkeley, Pacemaker, or Pathfinder. Contains instructions, advice, and construction details to fix one or make a new one, including parts sources. Anyone modestly skilled at electronics construction should be able to follow the instructions and make their USA Vox amplifier footswitch work again. Note: UK Vox amplifiers and Vox amps built by Korg are not covered; only the USA Vox amps built by Thomas Organ in the 1960s and 1970s.

The V1141 Beatle Repair Supplement contains information helpful in repairing the Thomas Organ Vox V1141 "Beatle" guitar amplifier. It extends the more general how-it-works information contained in the Vox Owner's Safety Net with V1141-specific schematics, parts lists, board diagrams and other info on this one model. It is much more than a copy of the original factory schematics, and includes entirely redrawn schematics and board diagrams as well as working voltages taken from simulations of the circuits. This allowed sidestepping the occasional error in the original Thomas Organ service information. This information is suitable for the owner of a Beatle who wants to keep his amp runn ...

A detailed Repair Supplement to the Vox Owner's Safety Net for the specific models V1121 Buckingham and V1151 Viscount. These models are electronically identical. They differ only in the Buckingham being a head-and-cabinet while the Viscount is a combo style. The Supplement is intended for the experienced electronic tech or hobbyist who wants to know how to repair his amp. The Supplement contains detailed parts lists, parts substitutions, schematics, PCB diagrams, modification and real-world repair advice on what to watch for. The schematics and PCB diagrams have been drafted fresh from zero, for better understanding of the somewhat opaque style of the Thomas Organ service literature - t ...

Vox Essex Repair Supplement; service your Thomas Organ Vox Essex bass amplifier. This supplement to the Vox Owner's Safety Net covers all four models (V-4/V104, V-4A/V1041, V1042 and V1043) with schematics, parts lists, recommended substitution parts where needed, and recommended service updates. This will be invaluable to you if you have a broken or malfunctioning Essex amplifier.

Do you own a Thomas Organ Vox amplifier? Does it work properly? If it doesn't, it can be hard to get it fixed, because amplifier repairmen have an arguably-unwarranted fear of working on these amps. But with some insights into the designs of the amps, they can be repaired to good-as or better-than new condition. The insider tidbits and deeper understanding of these amps has been collected into this book. The circuits are explained to gain an understanding of their operation, not just a scattergun repair approach. This book contains what the factory schematics don't tell you. Written by a lifelong devotee of the technology of guitar amps who also has both EE degrees and decades of ana ...