Silence noisy environments for travelling comfort. Take the noise out of noisy planes and accommodation with Noise Canceling Headphones. These comfortable and compact headphones let mobile professionals travel in peace and quiet. A built-in microprocessor analyzes background noises and creates an inverse sound wave that cancels the offending sound. Engines, fans, snoring, and other low frequency annoyances virtually disappear, leaving the traveller free to work, sleep, or listen to music in blissful silence. The Philips HN2500 noise cancelling headphone features: - Compact electronics eliminate unwanted external noise by up to 70%.
- Create a perfect seal between your ear and headphone will significantly reduce unwanted background noise.
- Rubber caps have three sizes.
- For the most convenient neck strap wearing style, simply loop the cable over your head and hang the control box from your neck. The integrated cable slide provides added support.
- The miniature electronics are packaged into the specially designed small control box.
- Aeroplane adaptor included - use your own headphones to listen to in-flight entertainment.
- Audio jack adaptor included - enables use on equipment with either 3.5 or 6.5 mm jacks.
Technical specifications Open accoustic system
50 - 1,500 Hz > 10 dB at 300 Hz active noise attenuation
40 - 20 000 Hz frequency response
72 Ohm at 1 kHz impedance
Neodymium magnet
15 mW maximum power input
10 dB at 300 Hz noise cancelling effect
9 mm speaker diameter
Copper voice coil
1.2 m cable length
3.5 mm stereo connector
3.5 - 6.3 mm adapter plug
2 * 3.5 mm airline plug
1.5 V baterry R03/AAA |
