"Jim Marshall's famous black box allowed bands to be heard by larger crowds than ever before," William Weir explains in "How the Marshall Amp Changed Rock -- and the Meaning of 'Loud.'" Looking back at Marshall's legacy, Weir traces the origins of arena rock back to the inventor's first amplifier in 1962. Here, a short documentary celebrates "the craft and the pride" that goes into making the iconic amps. The film was directed by Charlie Doran to promote Movember, a men's health nonprofit that raises awareness of prostate cancer. 

For more work by Charlie Doran, visit http://www.charliedoran.com/.