An acoustic assessment of intercity train public address systems used in Mk2 and Mk3 coaching stock (ACS-SAV-005)

An appraisal has been carried out to assess acoustically the quality of Public Address systems used on British Railways Intercity Mk2 and Mk3 coaching stock. This work was split into several sections. Existing test and maintenance methods were examined. Suggestions for improvements to test systems were made. The PA system...