Alcorn McBride audiovisual equipment was used to enhance the spectacular natural beauty of Ruby Falls in Tennessee, US.

Alcorn's Digital Audio Machine and Digital Video Machine HD created a sound and light show 1,000ft deep below the surface of the earth at the 145ft high underground waterfall within Lookout Mountain near Chattanooga.

The spectacle was created by production company Full Spectrum. Ruby Falls is fed by rainwater and natural springs which collect in a pool in the cave floor and then continue through the mountain until they join the Tennessee River at the base of the mountain.

Full Spectrum selected Alcorn McBride equipment for its reputation for ruggedness, reliability and solid-state technology in the humid environment. It includes an AM4 which supplies audio information at various points during the visitors’ tour around the cave. Additionally, another AM4 drives the soundtrack visitors hear during their elevator descent from the surface to Ruby Falls.

The historical video presentation at the entrance to the cave uses a DVM-8400 HD Digital Video Machine for solid-state playback.

Steve Carroll of Full Spectrum said: “Alcorn McBride products are a really good fit for this attraction. The machines are easy to use and are easily updated, which is helpful when Ruby Falls switches to a Halloween theme in the fall, for example.”