[Milsurplus] Postmortem on DEF headphone elements

[Hubert Miller]

Sorry, this is not military term or marking, apparently.
It was used in the industry I used to work in.
-H

>oh...

all this time i thought DEF was short for defense. does this mean that i used to play defective right guard on the football team? I did sac the quarterback quite a few times. But it had nothing to do with the air force. Do we have too much alphabet soup?

73,

Bill  KU8H