Sennheiser HD 31 User manual

HD 31
Products for Industry | Stereo Headphones
General Description
The 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
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Exceptionally light
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Compact design
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Robust
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Replaceable ear pads
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Weiter Übertragungsbereich
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Excellent frequency response
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Choice of connectors (see Technical Data)
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Company logo option
Recommended Accessories
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Ear pads (1 pair) Cat. No. 047299
Technical Data
Frequency response .................................................20 – 20,000 Hz
Transducer principle.................................................. dynamic, open
Nominal impedance .........................................300 Ω* as standard
Characteristic SPL ...................................................94 dB (at 1 kHz)
THD ...............................................................................................< 1 %
Ear coupling ......................................................................supra-aural
Contact pressure ..........................................................approx. 1.3 N
Weight (without cable)................................................ approx. 50 g
Connection cable.................................................1.2 m, single-sided
Connectors
HD 31-16-0................................. right-angled 3.5 mm stereo jack
(ARiNC type A1)
HD 31-26-0.....................right-angled 3.5 mm double mono jack
(ARiNC type A2)
Cat. No. 003510 HD 31-26-0
Cat. No. 003509 HD 31-16-0