Budget Decca Tree

One of my projects was creating a budget Decca tree. I modified and reinforced a lighting truss to hold three CAD M-179s in the "T" shape of a Decca tree with variable arm lengths (side arms up to 3.5 feet from center). The M-179 is perfect for this application for several reasons. Most importantly, they are cheap and durable. Additionally, like the Neumann M-50s typically used in a Decca tree, there is a rise in frequency response at about 2kHz. Since the M-179 has a completely variable polar pattern, it can be "tuned" to have a slightly subcardioid response, a feature that can benefit a spaced mic technique like a Decca tree.