These are great discussion points, so let's break them down a bit...
The weight penalty factor v's noise cancelling headphones:
I've added 1000g stationed 50mm ahead of the firewall; my W&B has been
marginally
affected... The Bose Active X headsets weigh 0.485kg (1.1kg with carry case),
the Clarity Aloft weigh 0.135kg (0.320kg with carry case)... The AUW penalty
is now the added mass less the gain; we are now at around 0.4kg weight
penalty...
but hang on a minute, let's now fly two up! Bose headsets with carry cases
2.2kg, Airbox mod with Clarity Aloft headsets and carry cases 1.75kg... just
lost 0.45kg!! ... thats two more $100 hamburgers!!
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http://forums.matronics.com/viewtopic.php?p=510463#510463
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