Sound system equipment. Electroacoustic transducers. Measurement of suspension parts Ingestion-build-137917 BS EN 50090-5-3 on conservation

BS EN 50090-5-3 on conservation of cultural heritage using laser cleaning techniques is useful for:

for use in aircraft electrical systems at operating temperature between – 55 °C and 200 °C and specially for high frequency up to 5 GHz

The method is not applicable for characterizing the vibration behaviour of tracks on loadbearing structures such as bridges or embankments

BS 4258-4 on determining the fluorine content of phosphoric acid (orthophosphoric acid) for industrial use is useful for:

Sound system equipment. Electroacoustic transducers. Measurement of suspension parts Ingestion-build-137917 BS EN 50090-5-3 on conservation1 Scope This International Standard applies to the suspension parts of electroacoustic transducers (for example, loudspeakers). It defines the parameters and measurement method to determine the properties of suspension parts like spiders, surrounds, diaphragms or cones before being assembled in the transducer. The measurement results are needed for engineering design purposes and for quality control. Furthermore, this method is intended to improve the