Active Noise Reduction Upgrade
You can install ANR electronics into an existing passive headset, and you can do it by yourself.
Several months ago I explained the mechanics of human hearing and the physics of passive and Active Noise Reduction (ANR) headsets ("How it works: Noise Reduction Headsets," Leading Edge, March 2014).
The takeaway from that column was Passive+Active Noise Reduction (P+ANR) is superior to Passive Noise Reduction (PNR) only, but the average headset cost—$700 to $1,000—might be out of reach for many pilots.
But what if you could cut the cost down to around $200 by upgrading your existing PNR headset? Would that make the decision any easier?
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