March is the snowiest month, so there should still be plenty of time to construct the speaker shown here. This speaker was shown 80 years ago in the March, 1937, issue of Radio Craft, and had a number of technical advantages. Since the packed snow has no resonant frequency of its own, the overall frequency characteristics of such a speaker would be excellent. And since the construction material is free for the taking, it allowed a large true exponential curvature.

To construct, simply take a snowball and roll it around until it’s about five feet in diameter. Then, you take your previously prepared “drill,” the exponentially-shaped board, and push it into the snowball untill a cone-shaped hole has been cut. You smooth out the interior by hand, and then place an 8 inch speaker at the back of the snowball (using wax paper or cloth to separate the speaker from the snow).

The magazine suggested that this speaker would be ideal at venues such as skating rinks, hockey games, toboggan slides, or winter carnivals. You can construct a number of them and connect them to a suitable radio or PA amplifier.

Not only will such a snow speaker produce a fine quality of reproduction, but it attracts a great deal of interest.