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Sennheiser 250 instruction manual Publ. 06/07, 516578/A02

Models: 250

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Sennheiser electronic GmbH & Co. KG 30900 Wedemark, Germany Phone +49 (5130) 600 0

Fax +49 (5130) 600 300

www.sennheiser.com

Printed in China

Publ. 06/07

516578/A02

Page 26

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Sennheiser 250 instruction manual Publ. 06/07, 516578/A02

Contents

Instrucciones de uso Gebruiksaanwijzing HMECNotice d‘emploi Istruzioni per l‘uso Contents Important safety instructions Safety instructions for batteries Delivery includes The HMEC 250 headset TalkThrough function Additional featuresySeparate left and right channel volume control yGood passive attenuation of ambient noiseOperating elements TT VOLUME + buttonTT VOLUME - button TalkThrough buttonMeanings of the LED MeaningLED indications NoiseGard 2.0 operationPreparing the headset for use Connecting the headsetConnector Inserting the batteriesConnecting a mobile telephone The 2.5 mm jack socket allows you to connect a mobile telephone. For this purpose, the microphone plug must be connected to the aircraft radio/intercom. A suitable adapter for your mobile telephone with 2.5 mm jack socket is available from your Sennheiser agentConnecting an additional audio player Hearing damage due to high volumesTo change the input sensitivity of the microphone Adjusting the microphone sensitivitySwitching between mono and stereo mode Attaching the cable clip Using the headsetAdjusting the headset Adjusting the volume CAUTION! Hearing damage due to high volume levelsPress the TT VOLUME + button Switching the TalkThrough function on/offAdjusting the volume of the TalkThrough function To increase the volume of the TalkThrough functionSwitching NoiseGard on/off – the LED lights up red andReplacing the batteries Always replace the two batteries at the same timeFolding up the headset Care and maintenance Replacing the earpadsAccessories and spare parts Replacing the wind shieldGeneral data SpecificationsHeadphones Transducer principle¼” 6.35 mm jack plug Connector assignmentMicrophone incl. preamplifier 5.25 mm jack plugManufacturer declarations CE Declaration of Conformity Publ. 06/07 516578/A02