Below, details from the section on the AC100 in the service manual compiled by Thomas Organ in late 1966 / early 1967. There were two main service centres in the USA: one at Sepulveda (California), the other in Evanston (Illinois). Parts were flown over from England by JMI. Everything was available - from cup washers to individual back panel boards.

Amplifier cabinets were similarly catered for:

A number of components for the AC100 SDL speaker cabinet were evidently still available in early 1969, listed in the revised (consolidated) Thomas parts list. Baffles - the front panel on which the speakers and horns were mounted - are offered separately.

Thomas National Service Center Parts List, February 1969.

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