This Order declares that a specific class of mounted loudspeakers (tariff classification 8518.22.00) are goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies. It takes effect from 16 March 2006 and continues until revoked under sections 269SC or 269SD of the Customs Act 1901.
Mechanically, importers of speakers that meet the listed technical criteria (50 Hz–21 kHz frequency, at least three speakers per enclosure, speaker diameter ≤15 cm) will have the Schedule 4 tariff treatment applied; importers must be able to show the goods meet those specifications.