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myrmepropagandist | 1 years ago (raw) | root | parent | reply | flag 
 This diagram is helping me to understand how these "Armature Driver Receivers" work. They are in essence tiny little speakers. Part of what makes earbuds "high end" is they may have two or three drivers for different ranges not just one... but they also need to work together well.

https://cdn.masto.host/sauropodswin/media_attachments/files/111/128/303/842/085/771/original/c11c44659972c8e3.png
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dc60a099 | 1 years ago (raw) | root | parent | reply | flag 
 @134318c2 

This is how the large-stadium sound systems are organised, using large speaker modules, separately driven using splits arranged by the frequency-bands.

It's how small they are made now that's chewy... :D
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e4f2decf | 1 years ago (raw) | root | parent | reply | flag 
 @134318c2 I think Armature is a fixed magnet. Then when the audio signal flows through the coil, it generates a magnetic field which changes as the music changes. This field then pushes and pulls against the armatures magnetic field, shaking the coil. In this diagram, that movement is transferred to the membrane by that pin you identified. The membrane can shift more air, making the noise louder.
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MagnetoMancer | 1 years ago (raw) | root | parent | reply | flag 
 @134318c2 
Interesting configuration, especially the folded armature. Not at all like classic speaker-coil design where the Coil vibrates directly with the attached cone "Membrane".
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llewelly | 1 years ago (raw) | root | parent | reply | flag 
 @134318c2 
my question: I think I see 2 drivers, but only one drive pin, only one armature, and only one membrane, and I don't know how the singal from the lower driver gets turned into sound. Is the case acting as both the armature and membrane for the lower driver?