The function of permanent magnets in some industrial devices – European Training Network for the Design and Recycling of Rare-Earth Permanent Magnet Motors and Generators in Hybrid and Full Electric Vehicles (DEMETER)
moving coil loudspeaker :: ITWissen.info
How Permanent Magnets are Used for Making Loudspeakers? | Stanford Magnets
Loudspeaker - Wikipedia
Loudspeakers
The function of permanent magnets in some industrial devices – European Training Network for the Design and Recycling of Rare-Earth Permanent Magnet Motors and Generators in Hybrid and Full Electric Vehicles (DEMETER)
Loudspeakers - Transducers - Basics Electronics
GCSE PHYSICS - What is a Loudspeaker? - How does a Loudspeaker Work? - GCSE SCIENCE.