Check out this course at https://www.coursera.org/course/audiomusicengpart1
"You will learn how a guitar amplifier works and you'll have the satisfaction of building your own working amplifier."
About the Course
This 6-week course is for students who are interested in learning the basic concepts of sound & acoustics and signals & electronics as they relate to music. The goal is for students to understand the basic concepts and principles of musical acoustics and electronics and to learn how equipment such as electric guitars, amplifiers, and loudspeakers are designed and operate. Students are encouraged to put the theory into practice by building a simple guitar practice amplifier. The course employs high-school level algebra and trigonometry, no calculus is required.
