eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes?
In: 600
They used to have “air tubes”. You plugged in a two pin plug that was just a hollow tube. No electronics. This would connect to bigger tubes below the seat. The sound would be sent through the tube. They actually had a few different channels. The sound was OK but the best part was all of the second hand smoke. The 70’s were fun.
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