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IEC 60268-3:1969 ed1.0

Заменен
Sound system equipment - Part 3: Sound systems amplifiers — 64 стр.
Applies to amplifiers which form part of a sound system for professional and household applications. Gives recommendations relative to the characteristics to be specified and the relevant measuring methods for amplifiers.
ICS
33.160.50 Auxiliaries. Including headphones, loudspeakers, microphones, etc. / Вспомогательные устройства. Включая наушники, громкоговорители, микрофоны и т.д.
17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры