User manual PIONEER SE-CE511

[. . . ] Supports noise canceling + surround to enjoy a wide range of sound sources, from music to movies. Equipped with active noise canceling function to reduce noise to 1/5th (300 Hz) normal levels. Equipped with SRS Headphone surround function, optimum for watching in-flight movies, etc. Confirm the presence of all parts and components before use. [. . . ] 2 Insert batteries, taking care to align their and polarities correctly. 1 Power indicator Lights when power is turned on. 2 Battery cover Slide to open the cover. 3 Power switch Provided with three positions: OFF, ON1 (noise canceller on), ON2 (noise canceller + SRS surround on) 4 VOLUME control dial Rotate to adjust sound volume. 5 Ear pads 3 Close the battery cover and slide back to its original position. When batteries become expended, the power indicator will become darker, and sound will appear distorted, with greater than normal amounts of noise. Always replace both batteries simultaneously. When the headphones are in continuous operation, nominal battery life will be as follows: AAA Alkaline batteries: About 20 hours AAA Manganese batteries: About 8 hours (Battery life may vary depending on surrounding temperatures and other conditions of use. 1 Press and slide open the battery cover on the left headphone cover as shown in the illustration. To protect your ears from damage, always rotate the volume dial of the headphones or your music device to its lowest position before wearing the headphones. 1 Attach one end of the furnished connection cord to the headphones, and the other end to your music playback device. In this case, remove your hand or other obstruction from the microphone. 3 Fold the headband as shown to align with the ear pads. If you suspect a malfunction, perform the following checks, since a simple operating error may be the cause of the problem. The problem may also be caused by factors other than the headphones themselves, so be sure to check the sound components with which the headphones are used. If the problem persists after making the following checks, consult your dealer or nearest Pioneer Service Station. Confirm that power is turned on to the AV component. Lower the sound volume on the connected AV component. If you are covering the microphone part of the headphone with your hand, remove your hand. Set the power switch to position ON1 or ON2 (power indicator lights green). Do not subject headphones to dropping, striking, or other severe impacts, since damage may result. To ensure high quality sound reproduction, keep the plug clean by wiping occasionally with a soft clean cloth. [. . . ] In locations exposed to high levels of noise, it is common to raise the sound volume to compensate for surrounding noise, but to ensure safety, the volume should not be raised so high that you cannot hear sounds of danger or warning. The headphones' ear pad material may degrade or decompose after extended use or storage. Keep the headphones clean by wiping occasionally with a soft cloth. In the event of severe soiling, dip a clean cloth in a weak solution of neutral detergent, wring the cloth, and wipe gently. [. . . ]