Guitar Amplifier Electronics: Fender Bassman

Guitar Amplifier Electronics: Fender Bassman image 1
Click to zoom in
Customer Images:
No Images yet! Submit a product image below!

Guitar Amplifier Electronics: Fender Bassman

In Stock

by Richard Kuehnel

Fender designed the Bassman in 1952 to be an amplifier for its new Precision Bass. The amp had a 15-inch speaker with a closed back and used a pair of 5881 beam power tetrodes for lots of volume. Throughout the decade it would be modified and improved until culminating in the model 5F6-A.

Ironically it didn't quite make it as a bass amp, but the musical tones it created from a guitar made history. The Bassman's long-tailed-pair phase inverter with negative feedback became the foundation for many great rock and blues sounds. Many other amplifier manufacturers created new Bassman-derived designs that themselves became the legendary instruments of a rock generation. For more than half a century the 5F6-A circuit has been tweaked, enhanced, and re-introduced under many different logos, and the late-1950's original has become one of the most iconic guitar amplifiers of all time.

Fender's product line represents a master class in evolutionary design. For this reason, we begin our circuit exploration with the TV front and wide panel 5B6. We also examine the narrow panel 5E6, 5E6-A, and 5F6, because they are major milestones in the evolutionary development of the 5F6-A. With each model we explain system design concepts, the motivations underlying design changes, stage-by-stage circuit operation, and overall system performance. Analysis includes a stage-by-stage profile of audio signal levels, system voicing, harmonic distortion, intermodulation distortion, and overdrive dynamics.

Author: Richard Kuehnel is a member of the Circuits and Systems Society of the Institute of Electrical and Electronic Engineers.

Item ID:
RoHS Compliant
Item Height0.44 in.
Item Length9 in.
Item Width7 in.
Page Count162 pages
Packaging Information
Packaging Dimensions9 in. × 7 in. × 0.5 in.
Weight (Packaging)0.7672 lbs.

My Project Lists

You must be logged in to add items to a project list.

Questions? Contact us at [email protected], or give us a call at 480-296-0890

Product Reviews

4.00 out of 5 based on 1 reviews
J1 - February 23rd, 2023
4 out of 5

Written by an engineer for other engineers. That being said it is a fantastic resource breaking down Leo Fender’s iconic early circuits and revisions that ultimately lead to the 5F6-A Bassman. Probably not a book for your average guitar player( unless you’re Brian May!) Schematics, graphs and formulas , the building blocks of a legendary amplifier! No pics of tweed cabs or naughty shots of tag boards, resistors and caps unfortunately .