# The *SpHEAR Project

## TinySpHEAR with Zapnspark interfaces

The TinySpHEAR microphone is a traditional 4 capsule tetrahedral first order Ambisonics microphone. This improved design adds four printed circuit boards with Zapnspark phantom power interfaces housed in the microphone body. A trailing cable ends in four XLR connectors. The picture shows the full design as previewed in OpenSCAD and a picture of the second prototype (built with Primo EM182 10mm capsules, 9.6mm microphone radius).


<img src="pictures/TinySpHEAR_zapnspark.png" width="400">


The 3D models also include a shock mount that clips into a standard microphone stand mount. The two main model files are tuned for ![EM182](./TinySpHEAR_EM182.scad "TinySpHEAR for 10mm EM182 capsules") (10mm) and ![EM200](./TinySpHEAR_RM200.scad "TinySpHEAR for EM200 capsules") (14mm) capsules. Uncomment the different "render_" lines to render different parts or the complete microphone assembly.