User manual SENNHEISER HD 250 LINEAR II

[. . . ] Please take a few moments to read these instructions carefully, as we want you to enjoy your new Sennheiser product quickly and to the full. Very comfortable, even if used for long periods due to · Very light weight · Soft, circum-aural ear cushions · Very rugged with user-replaceable parts HD 280 -13 headphones As HD 280 pro, but high impedance variant (300 impedance). [. . . ] The headphones not only effectively attenuate external noise but also minimise spillage from the headphones to the outside world. This is a professional pair of headphones. Commercial use is subject to the rules and regulations of the trade association responsible. Sennheiser, as the manufacturer, is therefore obliged to expressly point out possible health risks arising from use. This system is capable of producing sound pressure exceeding 85 dB(A). 85 dB(A) is the sound pressure corresponding to the maximum permissible volume which is by law (in some countries) allowed to affect your hearing for the duration of a working day. It is used as a basis according to the specifications of industrial medicine. Pull the two edges of the headband padding together so that the fastening strips slightly overlap. Grasp behind the ear cushion and pull it up and away from the earcup. Remove the antikink protection of the connecting cable from the holding device . Insert the antikink protection of the new connecting cable into the holding device. Plug the connector of the new connecting cable into the socket as shown in the diagram on the left. Converting the headphones into a headset If you wish to convert your headphones into a headset, please contact your Sennheiser service partner who will equip the headphones with a microphone. Input power Ear coupling Frequency response (­10 dB referred to 1 kHz) Sound pressure level Ambient noise attenuation THD Weight Contact pressure Length of coiled cable 268-7-IEC-DCSC-64R0-2 dynamic 64 (as per IEC 268-7) 0. [. . . ] Converting the headphones into a headset If you wish to convert your headphones into a headset, please contact your Sennheiser service partner who will equip the headphones with a microphone. Input power Ear coupling Frequency response (­10 dB referred to 1 kHz) Sound pressure level Ambient noise attenuation THD Weight Contact pressure Length of coiled cable 268-7-IEC-DCSC-64R0-2 dynamic 64 (as per IEC 268-7) 0. [. . . ]