3D Printer STL files, parts and tools, which will help you to print and assemble audio source switch and volume control boxes. If you noticed mistakes, have questions or suggestions, know better component (available in EU and US), please write or send link to info@jocys.com • Project on Thingiverse.com or Printables.com

If you made your own updates or changes, related to this project, please send me a link. I will add this link to your work on this page.

Why I decided to make my own switch? I tested few audio switches. Ground wires of both audio sources were connected together in all of them. Why? I understand, that manufacturers can save few € by using cheaper switches with fewer poles, but consequences of that are unacceptable. Unnecessary ground merging creates audio noise and anomalies. You need to buy and use ground loop isolators to eliminate this noise, but ground loop isolators degrade quality of the audio slightly. I wanted audio to go through ground loop noise isolators ONLY, when both audio sources are merged (when you want to hear audio from both computers at the same time). To avoid audio merging, while switching sources, I used non-shorting switches. Also, I wanted to switch headphones and stereo microphone with ability to switch off (disconnect) microphone completely. With stereo microphone you can have better environment noise elimination options in software. I didn’t want to use powered audio mixers or interfaces, which needs power and processes (distorts) signal in any way.

Features:

1. Microphone switch: PC1 • OFF • PC2.
2. PC1 audio volume control.
3. PC2 audio volume control.
4. Audio source switch: PC1 • PC2.
5. Audio source merge: PC# (OFF) • PC1 + PC2 (ON) - audio signal grounds of PC1 and PC2 are merged and audio goes through ground loop noise isolators ONLY, when audio signals are merged. This allows to avoid audio quality degradation, when unnecessary and you don't need to listen both computers at the same time.