Purpose: To allow for selection from an audio input to one of two audio outputs.
Other uses: To allow for selection From one of two audio inputs to an audio output.
Step 1: Materials and Tools
1 double pole double throw switch. approximately 2.99 at radio shack.
3 3.5mm stereo audio ports. 2.99 for a pack of 2 at radio shack
some electrical tape.
small box or or mint tin. I used an ice breakers plastic mint container for ease of cutting.
lengths of wire.
Needle nose pliers
exact-o knife or similar cutting tools.
wire cuter (optional, an exact-o will work if your good with your hands)
Step 2: Prepare the Container
Depending on your materials and preferences location and sizes of the holes will vary. If I do this project over again I would separate the audio holes more as the connectors this close make it hard to reach the wires.
Step 3: Preparing the Switch and Audio Ports
Step 4: Mount the Components
Step 5: Finnish Soldering and Closing It Up
Once all the wires are soldered replace the lid and tape it up and test it. I didn't notice any audio degradation with my box though there is always a chance some will occur.
I've added a wiring diagram to show exactly how I did this. Exactly which connection is left or right makes no difference as long as you are consistent. The ground is usually located on the side of the jack.
Step 6: Improvements and More.
With more switches and audio jacks its possible to expand this for more inputs/outputs where each additional switch adds room for one more connector.
A larger switch with 3 poles instead of two and some spare audio cord may help to reduce any signal degradation.
Connecting the center leads of two switches will allow selection of multiple inputs as well as outputs.
If your wire is more flexible or your confident with your skills you can connect a single wire from each connector directly to the switch eliminating that center soldering point.
All comments and suggestions welcome.