Marketed in 1972, Wilcam Photo Research made an adaptation of Minolta Autopak-8 D10 for incorporating a sound recording unit. The camera system including: camera, one 200-foot magazine, amplifier, microphone, headphones and NiCad batteries. See the characteristics of Minolta Autopack-8 D 10, here.

Two innovations of this movie camera: first super 8 camera with sound-on-film recording system (two years before the launch of Ektasound Super 8 system), and first 200 ft magazine with striped film and single film (three years before the launch the Supermatic series by the Eastman Kodak).

"The cartridge compartment was modified to take the sprokets required for magazine loading, the record and sound monitor heads, the sound drum, and a pressure plate to replace the normally part of the cartridge. [...] The sound track can be heard about 1/10 second after it has been recorded. The amplifier supplied is an automatic-gain unit. The largest diameter of the microphone is one and one-half inches and overall length is eight inches. There is a speech/music switch and a monitor selector switch for monitoring the film sound track or amplifier output. A meter is fitted for checking record level. This also serves as a bias check, which indicates the state of the amplifier batteries. The amplifier takes a 12 volt supply and uses two Mallory TR 289 batteries. Battery life is over 100 hours. The camera batteries are eight C-cells. Rechargeable nickel cadmium (nicad) batteries are normally supplied and one charge will run five or six 200-foot loads of film. There is a built-in charger for 115 volts of alternating current (VAC) that will charge nicads in 12 hours". Extracts from Utilization of Super-8 Film in Television News, a thesis in mass communications,, by Ulvi A. Dogan, Texas Tech University, USA, August 1972.

Cited by Lenny Lipton in the book Independent Film Making, Straight Arrow Books, San Francisco (USA), 1972 [chapter 1].

Article of Geoff Williamson: Williamson's Willcam Super-8 Single System Sound Camera, American Cinematographer, April 1971, USA, pp 350-351.

A photography can be seen in the book of Jürgen Lossau The Complete Catalog of Movie Cameras, Atoll Mediem, Hamburg (Germany), 2003. The photography of the book shows that the lens are the original Rokkor of the Minolta Autopak D-10.

Article: The Wilcam W-1 Single/Double-System Super-8 Sound Camera, American Cinematographer, December 1972, USA.