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PXC 250-II headphones
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PXC 250-II headphones
The PXC 250-II are closed, dynamic, supra-aural stereo
headphones with NoiseGard active noise compensation,
designed for use with in-flight entertainment systems.
The combination of passive and active noise reduction
enables you to enjoy music even in noisy environments.
Comfortable to wear and easy to use, the sturdy,
foldable headphones are also ideal for use with portable
audio sources.
NoiseGard
TM
The NoiseGard active noise compensation system is
based on the principle of cancelling out sound using
“anti-sound” (phase-inverted sound). Tiny microphones
pick up low-frequency ambient noise (up to 1 kHz) near
the ear. The NoiseGard electronics use this noise to
generate a sound wave which is the exact opposite
(IE:
at the same level but polarity reversed – 180° out-
of-phase), the effect being that the polarity reversed
signal cancels most of the outside noise.
Delivery includes
1 PXC 250-II headphones
1transport case
1 in-flight adapter
(3.5 mm double mono jack plug)
1 AAA size alkaline battery, 1.5 V
1 instruction manual