| HD 31   Cat. No. 003510 HD 31-26-0   Cat. No. 003509 HD 31-16-0   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.   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)   Features   Exceptionally light   Compact design   Robust   Replaceable ear pads   Weiter Übertragungsbereich   Excellent frequency response   Choice of connectors (see Technical Data)   Company logo option   Recommended Accessories   Ear pads (1 pair)   Cat. No. 047299   Download from Www.Somanuals.com. All Manuals Search And Download.   |