Websites

Stephen Grosvenor's AC30 Guide website. For the printed book, see the section below.

Alan Vale's Valve Amps website . A wonderful (and growing) record of British valve amps. The Vox section is here.

Joe Pampel's excellent blog - amplifier builds and circuit analyses - can be found here.

On Facebook, the JMI Vox AC30 amp restoration and users group.

Also on Facebook, the Vox, the JMI years group.

The Vox AC100 website has various sections relevant to Vox amplifiers on a general level - in particular, displays at Trade Fairs, 1958-1968.

Celestion speakers are covered in depth by the Bygone Tones site.

On all aspects of 1960s portable organs, the Combo Organ Heaven is a primary resource, with links to other resources there.

On the Vox Continental, see also Ron Lebar's page. An eye witness recollection of the development of the organ.

John Beer's Amp Fix site - Watkins in particular, but much else.

John Chambers's pages on JMI amp repair and restoration.

Books and printed matter

Jim Elyea, "Vox Amplifiers: The JMI Years" (Los Angeles, 2010). A fundamental work.

David Petersen and Dick Denney, "The Vox Story" (1993). Still extremely useful.

Stephen Grosvenor, "A Service Engineer's Guide to the Vox AC30 Valve Amplifier", (Birmingham, 2006), revised edition. Indispensable circuit layouts and commentary.

David Robertson and Alan Lenhoff, "Classic Keys" (University of North Texas Press, 2019) - a fundamental work on portable organs, 1950s-1980s. Further info here.

"Vintage Guitar" magazine (USA) often has interesting material on Vox amps - esp. issues from the 1990s and 2000s. Shop adverts can also be revealing even if the dates ascribed to the amps are a little hopeful. How many AC30s are ever said to be from 1966 or 1967?

Other

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