User manual SENNHEISER HME 43-3

[. . . ] y The headset is capable of producing sound pressure levels exceeding 85 dB(A). In many countries 85 dB(A) is the maximum legally permissible level for continuous noise exposure during the working day. Exposure to sounds of higher volume levels or for longer durations can permanently damage your hearing! [. . . ] Features: y Extremely lightweight y Extremely comfortable to wear due to the patented two-piece automatic headband and soft earpads y ActiveGardTM safeguards you from the effects of an acoustic burst y Flexible microphone boom, can be worn on either left or right-hand side y Noise-compensating microphone ensures excellent speech transmission Delivery includes 1 HME 43-3/HME 43-3S headset 1 cable clip 1 carry bag 2 foam earpads HME 43-3 1 foam earpad HME 43-3S 1 wind and pop screen 1 instruction manual 3 Operation Wearing the headset Adjust the length of the headband to fit your head size or shape. Note: The earpads should exert a slight pressure on the ears. Holding the headset with two hands, carefully bend the headband to adjust it to a snug but comfortable fit. 4 Turning the microphone boom The microphone boom can be rotated. This allows the headset to be worn with the microphone boom positioned on either the left or right-hand side of the head. Positioning the microphone Bend the flexible microphone boom so that the microphone is placed at the corner of the mouth. 2 cm between microphone and mouth. 5 Replacing the wind screen If the wind screen shows signs of wear such as tears or holes, replace the wind screen. Pull the wind screen from the microphone. Gently slide-on the new wind screen. Notes: y In order to avoid pop noise, always use the microphone with the supplied wind and pop screen!y Ensure that the wind screen fits securely over the microphone. 6 Adjusting the volume directly on the audio system Connect the headset to the corresponding sockets of your audio system. Adjust the volume directly on the audio system. This headset is capable of producing high sound pressure levels. Higher volumes or longer durations can damage your hearing!Make sure that you can hear critical sounds such as warning alarms. Adjusting the microphone sensitivity The microphone sensitivity has been factory pre-set to 300 mV/Pa. Remove the sticker as shown in the diagram. Change the microphone sensitivity by turning a screwdriver in the direction of the arrow. 7 Storage and transportation Turn the microphone into the position shown in the diagram. Rotate the earcups by 90°. Use the supplied carrying bag for storage and transportation. 8 Care and maintenance Cleaning the headset Use a soft, slightly damp cloth to clean the headset from time to time. If the headset is very dirty, use a cloth dampened with mild, soapy water. [. . . ] SPL (ActiveGardTM) at 1 kHz Ear coupling THD at 1 kHz Contact pressure Nominal impedance Size of earcups 12 HME 43-3 HME 43-3S single-sided round cable, length 1. 90 m approx. 95 g ­5 °C to +45 °C ­55 °C to +70 °C dynamic 100 Hz to 6, 000 Hz 94 dB SPL 102 dB SPL 103 dB SPL 107 dB SPL 116 dB SPL 110 dB SPL supra-aural, closed < 1% at < 1% at 105 dB SPL 102 dB SPL approx. 1. 5 N 150 : mono 300 : mono 51 mm Microphone Model Transducer principle Frequency response Output voltage Supply voltage Terminating impedance BKE 43 pre-polarized condenser, noise compensating 400 Hz to 4, 500 Hz 300 mV/Pa at a distance of approx. [. . . ]