The upcycled “LESA Boogie” guitar amplifier @davidegironi
Davide Gironi blogs a vintage guitar amplifier build:
I’ve built this guitar amplifier from a 1950’s turntable with speakers. This turntable was built by LESA (Laboratori Elettrotecnici Società Anonima). It was left in an house with water leaks, the water was running just over the turntable. Luckily the speakers were intact. Because I liked the turntable front and the speaker cases, I decided to build a small guitar amplifier out of the pieces.
The speakers were obviously old. They both consist of a woofer and a tweeter, joined together using a single capacitor filter. The original speaker impedance was 3.2 ohms. In order to connect the amplifier board to the speaker, Davide connected the two speakers using a single filtering capacitor.
See the blog and the video below for more details.
Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.