My computer at work didn’t have a 1/4″ headphone jack, so I built simple box that did. It allows me to switch between headphones (1/4″ or 1/8″) or speakers. I also added a volume control for the headphones.
Jan 17, 2019
I was emailed by “dj mike d” for a proper schematic of this design. See below. I wired all three L, R and Ground wires all the way through everything to be consistent. I probably could have tied the grounds together more simply, but I like how clean the lines are this way as it makes it easier for me to understand the flow of electricity through the box.
Feb 12, 2018
I was emailed by “Nathan” about how a simpler version could be wired that only had one headphone out, and didn’t have a volume control. Here’s a quick sketch for that.
Also, if you want the front always on, and only the back switchable. See the following.
If you're interested in discussing this project or how we could work together, please get in touch at firstname.lastname@example.org