User manual SENNHEISER PXC 250-II

[. . . ] 12 Manufacturer Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . We have designed this product to give you reliable operation over many years. Over 60 years of accumulated expertise in the design and manufacture of high-quality electro-acoustic equipment have made Sennheiser a world-leading company in this field. [. . . ] The combination of passive and active noise reduction enables you to enjoy music even in noisy environments. Comfortable to wear and easy to use, the sturdy, foldable headphones are also ideal for use with portable audio sources. NoiseGardTM The NoiseGard active noise compensation system is based on the principle of cancelling out sound using "anti-sound" (phase-inverted sound). Tiny microphones pick up low-frequency ambient noise (up to 1 kHz) near the ear. The NoiseGard electronics use this noise to generate a sound wave which is the exact opposite (IE: at the same level but polarity reversed ­ 180° outof-phase), the effect being that the polarity reversed signal cancels most of the outside noise. Delivery includes 1 PXC 250-II headphones 1 transport case 1 in-flight adapter (3. 5 mm double mono jack plug) 1 AAA size alkaline battery, 1. 5 V 1 instruction manual 4 Product overview Product overview Overview of operating controls ³ · ¿ ´ ² » ³ · » ¿ ¶ Headband ´ ­ Volume + control Ear pads ² NoiseGard On ­ Off switch with LED Audio cable ¶ Clip Battery compartment LED indications LED flashes red is off Meaning Battery is almost flat NoiseGard is switched off Page 9 9 9 lights up red NoiseGard is switched on 5 Putting the PXC 250-II into operation Putting the PXC 250-II into operation WARNING!Magnetic fields can interfere with cardiac pacemakers The headphones contain magnets that generate a magnetic field which could cause interference with cardiac pacemakers and implanted defibrillators. Keep the headphones at least 1. 2" (3 cm) from cardiac pacemakers and implanted defibrillators. Unfolding the headphones Separate the notched locking connection of the headband by gently pulling it apart. Turn the ear cups outwards by 90°. 6 Putting the PXC 250-II into operation Inserting and changing the battery For best product performance, we recommend using a standard battery instead of a rechargeable battery. For powering the NoiseGard active noise compensation, an AAA size battery is required. The cover lock into place with an audible click. ¿ Connecting the headphones Connect the audio cable » to the headphone socket of your audio source. Slip on the in-flight adapter º if you wish to use the headphones with the in-flight entertainment system of the aircraft. Music Photos Videos Extras Settings Shuffle Songs » » º 7 Using the PXC 250-II Adjusting the headband For good noise attenuation and best possible comfort, the headband has to be adjusted to properly fit your head. Wear the headphones so that the headband ³ runs over the top of your head. Adjust the length of the headband so that ­ the ear pads · rest comfortably on your ears, ­ a snug fit of the headband ³ on the head is ensured. ³ · To ensure maximum noise attenuation, final adjustment is best made in a noisy environment. Using the PXC 250-II Adjusting the volume WARNING Hearing damage due to high volumes!Listening at high volume levels for long periods can lead to permanent hearing defects. [. . . ] In compliance with the following requirements · · · RoHS Directive (2002/95/EC) WEEE Directive (2002/96/EC) Battery Directive (2006/66/EC) CE Conformity · · EMC Directive (2004/108/EC) The declaration is available on the Internet at www. sennheiser. com. Before putting device into operation, observe the respective country-specific regulations. Please dispose of it as special waste or return it to your specialist dealer. [. . . ]