Reddit user SirSaucySquid lay directly underneath a transmission tower to capture this hypnotic photo. The dizzying array of steel is reminiscent of a sort of giant kaleidoscope pattern. The photo was taken on his phone and edited using the VSCO Cam app.
A transmission tower is a tall structure, usually a steel lattice tower, used to support an overhead power line. They are used in high-voltage AC and DC systems, and come in a wide variety of shapes and sizes.
According to designer Zilch (RIP), “eWave is a pre-engineered high-frequency ‘module’ for building 2-ways comprising an inexpensive compression driver, modern constant-directivity waveguide, and a crossover incorporating the requisite compensation. Mate it with any woofer and cabinet of your choice which will play competently through its 1.6 kHz crossover region. The builder is responsible for optimizing the lowpass filter for the specific combination they use; a generic one is suggested as a starting point, and many have found that to be adequate for constructing a successful project….”
Essentially, the eWave setup replaces the original crossover — and the old tweeters and midranges with a single, horn high-range driver — and brings high-end, modern sound to vintage cabinets with original woofers.