Sennheiser HD 31 Inflight Headphones
Sennheiser Updated: 2009-01-07 RSSThe HD 31 is a pair of open, dynamic stereo headphones which are small, light, robust and comfortable to wear. The ear pads can easily be changed, and the headphones can be supplied with any company logo printed on them.
Features
* Exceptionally light
* Compact design
* Robust
* Replaceable ear pads
* Excellent frequency response
* Choice of connectors (see Technical Data)
* Company logo option
Technical Data
Transducer principle: dynamisch, offen
Nominal impedance: standardmäßig 300 Ohm
Characteristic SPL: 94 dB (bei 1 kHz)
Ear coupling: supraaural
Contact pressure: ca. 1,3 N
Weight w/o cable: ca. 50 g
Connection cable: 1,2 m einseitig geführt
Jack plug: 3,5 mm Stereo-Winkelklinke; 3,5 mm Doppelwinkelklinke; 6,3 mm Stereo-Winkelklinke
Frequency response (headphones): 20.....20000 Hz
THD, total harmonic distortion: < 1 %
Fact Sheet
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