I’ve wanted a Bluetooth speaker when working in the yard or around the house. There are a lot of options to purchase one, JBL makes a great item, but it’s too much money for what I need. Since bluetooth/amp boards…
DIY Bluetooth Speaker
Category: Stereo
Earbud Headphone Case
A simple project made of scraps, this box was designed to house and protect earbud headphones when they are in a backpack. In this example, hard maple was used but a piece of pine two by material would work as…
Tablet Arm Mount
Overview Working in the shop is a relaxing and rewarding way to spend some free time; either repairing or creating. While working it’s nice to have either news or music playing. The shop already has four speakers and an amplifier…
Loudspeaker DIY in the 80’s
Speakerlab Design Guide from 1983 and the Speakerlab 1985 Catalog. SpeakerlabDesignGuide_1983 SpeakerlabCatalog_1985
Review: Magic Sound Box by Sunpak
Manufacturer: Sunpak Model: Magic Sound Box Web: http://www.magicsoundbox.com/ Place of Purchase: Woot! Cost: $4.99 The reason this was purchased is simply for the gimmick of “sound induction technology”. Of course the cheap price was also a motivating factor. I have…
Review: Lepai LP-2020A+ 20W Amplifier
Manufacturer: Lepai Model: LP-2020A+ 20W Amplifier Web: Parts Express Place of Purchase: Parts Express Cost: $17.00 Garage Sound Last winter’s project was to be a small, somewhat powerful amplifier for use in the garage. It didn’t go so well, and…
20W Amplifier Project – Circuit Complete
Read the previous entries for this project: 20W Amplifier Project 20W Amplifier Project – Redo 20W Amplifier Project – Prep Work The remaining components finally arrived, the work can begin on the volume, tone and balance portion of the circuit. …
20W Amplifier Project – Redo
The 20W amplifier project, as detailed in the last entry, was a partial success. It was working, in that the sound was being amplified, but there was a tremendous amount of humming. The other issue, which does not have anything…
20W Amplifier Project
After attempting, and failing, at building an audio amplifier for the garage, simpler design was in order. After some research, amplifiers based on the TDA2003 IC seem quite common and rather easy to build. This is the schematic used for…
Amplifier Project – Part 6
This is the sixth part in the Amplifier Project series. This covers the entire process of building an audio amplifier based on the information located at Red Free Circuit Designs. The previous installments of this project are located here: Amplifier Project…