3-100-340-11(2) N Getting started 5 Wireless Stereo Headphone System Operating Instructions Mode d'emploi Unpacking Check that you have the following items: · The headphones (1) Rest the headphones on the transmitter so that the transmitter's POWER/CHARGE indicator lights in red. Please place the headphones on the transmitter so that the triangle arrow would be matched. If the headphones are not properly placed, it will not be charged. Charging will take about 16 hours, after which the POWER/CHARGE indicator will go off. Headphones Notes on Batteries · Do not charge a dry battery. · Do not carry a dry battery together with coins or other metallic objects. It can generate heat if the positive and negative terminals of the battery accidentally come into contact with metallic objects. · If you are not going to use the unit for a long time, remove the batteries to avoid damage from battery leakage or corrosion. Notes · Use only the supplied AC power adaptor. Do not use any other AC power adaptor. Sending RF signals from the transmitter The transmitter starts sending RF signals automatically when it detects an audio signal from the connected equipment. If it does not detect an audio signal for more than about 10 minutes, the transmitter will stop sending RF signals, and the POWER/CHARGE indicator will turn off. When the transmitter receives an audio signal again, it starts sending the RF signals, and the POWER/CHARGE indicator will light up green again. If the audio signal is very weak, the transmitter does not send RF signals. If the transmitter is connected to a headphone jack, make sure the volume of the equipment connected is set to 5 - 6 or higher. You may not hear the beginning of the sound from the headphones until the transmitter starts sending the RF signals after detecting an audio signal. N Additional information Precautions · If the transmitter is not to be used for a long period of time, disconnect the AC power adaptor from the AC outlet by holding the plug. Do not pull on the cord. · Do not leave the wireless stereo headphone system in a location subject to direct sunlight, heat or moisture. Polarity of the plug Checking the remaining battery power Pull up the self-adjusting band and check the POWER indicator located on the right housing. The battery is still serviceable when the indicator lights in red. Charge the rechargeable battery or install new dry batteries if the POWER indicator light dims, flashes, or the sound becomes distorted or noisy. L R · When the transmitter is placed on or near a TV, it may pick up a noise. In such a case, place the transmitter away from the TV. · If the connected equipment has the AVLS (Automatic Volume Limiter System) function, be sure to turn the function off when using the transmitter. Otherwise, you will have to turn up the volume of the headphones, and that may cause noise. Notes on headphones To reduce the risk of hearing damage Avoid using headphones at high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. · The transmitter (1) Note The rechargeable nickel-metal hydride battery should be replaced with new one when they last only half the expected time after a proper recharging. The rechargeable battery type BP-HP550-11 is not commercially available. You can order the battery from the store where you purchased this system, or at your nearest Sony dealer. N Operating the system The headphones automatically turn off when they are taken off ­ Auto power on/off function Do not pull up the self-adjusting band when not in use, as this will consume the battery power. MDR-RF925RK MDR-RF970RK · AC power adaptor (1) Listening to a program Before listening To reduce the risk of hearing damage, first lower the volume. Caring for others Keep the volume at a moderate level. This will allow you to hear outside sounds and to be considerate to the people around you. If you have any questions or problems concerning the system that are not covered in this manual, please consult your nearest Sony dealer. Be sure to bring the headphones and the transmitter to the Sony dealer when requiring repair work. POWER/CHARGE indicator Transmitter © 2007 Sony Corporation Printed in China About the charging method of the system English For the customers in the USA and Canada RECYCLING NICKEL METAL HYDRIDE BATTERIES Nickel Metal Hydride batteries are recyclable. You can help preserve our environment by returning your used rechargeable batteries to the collection and recycling location nearest you. For more information regarding recycling of rechargeable batteries, call toll free 1-800-822-8837, or visit http://www.rbrc.org/ Caution: Do not handle damaged or leaking Nickel Metal Hydride batteries. · Connecting cord (1) (phono plugs y stereo miniplug), 1 m This system employs a contactless charge method that requires no terminals by the electromagnetic induction. Setting up the transmitter 1 Connect the transmitter to audio/video equipment. Select one of the hookups below depending on the jack type: A To connect to a headphones jack Transmitter To INPUT A jacks 1 Selfadjusting band Turn on the audio/video equipment connected to the transmitter. If the transmitter is connected to the headphone jack, set the volume control of the audio source equipment as high as possible but not so high that the audio signal becomes distorted. Notes · Do not leave any metallic objects (coin, clip, etc.) near the transmitter's charging point. The transmitter and the metal might become hot and it is dangerous. Charging point Notes · If hiss is heard, move closer to the transmitter. · You may hear some noise when you disconnect the AC power adaptor from the transmitter before turn off the headphones. 2 Troubleshooting No sound/Muffled sound , Check the connection of the audio/video equipment or the AC power adaptor. , Check that the audio/video equipment is turned on. , Turn up the volume on the connected audio/ video equipment, if the transmitter is connected to the headphones jack. , Change the radio frequency with the CHANNEL selector switch on the transmitter, then set to the same radio frequency with the TUNING selector (or TUNING button) on the right housing of the headphones. , The muting function is activated. · Use the headphones near the transmitter. , The headphones' POWER indicator light turns off, dims, flashes, or sound becomes distorted or noisy. · Charge the rechargeable battery if it is weak, or replace alkaline batteries with new ones. If the POWER indicator is still off after charging the battery, take the headphones to a Sony dealer. Remove the headphones from the transmitter. The transmitter's POWER/CHARGE indicator lights up green. WARNING To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. To reduce the risk of fire or electric shock, do not place objects filled with liquids, such as vases, on the apparatus. To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only. Connect AC power adaptor to an easily accessible AC outlet. Should you notice an abnormality in AC power adaptor, disconnect it from the AC outlet immediately. Do not install the appliance in a confined space, such as a bookcase or built-in cabinet. Do not expose the battery to excessive heat such as direct sunlight, fire or the like. · Unimatch plug adaptor (1) (stereo mini jack y stereo phone plug) (MDR-RF970RK only) Noise Reduction process (MDR-RF970RK only) The transmitter unit compresses the audio signal and converts it to RF signal. The headphones unit converts the received RF signal to an audio signal and decompresses it. This process reduces noise picked up during transmission. Transmitter unit dynamic range Headphones · Rechargeable nickel-metal hydride battery BP-HP550-11 (1) · Do not leave any objects susceptible to magnetism (cash cards, floppy disks with magnetic coding, etc.) near the system. Exposure to the transmitter's electromagnetic field may render them unusable. 123 CHANNEL R DC IN 12V A L INPUT B Headphones unit RF transmission input signal output signal L Headphones R Right channel (red) Left channel (white) Transmitter 2 34 decompression noise level (low) 1 compression 5 Welcome! Thank you for purchasing the Sony MDR-RF925RK/ RF970RK Wireless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference. Some features are: · Wireless transmission lets you enjoy TV or music without the restriction of a cord · High fidelity sound reproduction · Enhanced clarity of sound with minimal transmission noise by use of noise reduction technology (MDR-RF970RK only) · Easy connection to TV and Audio system equipment · Up to 150 feet reception range · Hassle-free recharging by simply placing headphones on the transmitter base station; headphones charge via electromagnetic induction · Convenient volume adjustment on the headphones · Comfortable fit with adjustable headband and complete coverage of the ear · Headphones automatically turn on when placed over the head and turn off when removed, saving battery power Charging the supplied rechargeable battery The supplied rechargeable nickel-metal hydride battery is not charged from the first time you use it. Be sure to charge it before use. To charge the headphones, place them on the transmitter. Connecting cord (supplied) Rechargeable battery 3 Select the radio frequency with the CHANNEL selector switch. Information You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. If you have any questions about this product, you may call: Sony Customer Information Services Center 1-800-222-7669 or http://www.sony.com/ Lines of magnetic force Transmitter Unimatch plug adaptor (MDR-RF970RK: supplied) To headphones jack (Stereo phone jack) 123 CHANNEL 1 The transmitter unit compresses the audio signals dynamic range, then converts it to RF signal. 2 Noise may occur due to long distance transmission, etc. 3 The headphones unit converts the RF signal to an audio signal. 4 Noise may occur during conversion. 5 Decompression of the audio signals dynamic range reduces the noise level and improves the S/N (signal-to-noise) ratio. Distortion , If the transmitter is connected to the headphones jack, turn down the volume on the connected audio/video equipment. , Change the radio frequency with the CHANNEL selector switch on the transmitter, then set to the same radio frequency with the TUNING selector (or TUNING button) on the right housing of the headphones. , The headphones' POWER indicator light turns off, dims, flashes, or sound becomes distorted or noisy. · Charge the rechargeable battery if it is weak, or replace alkaline batteries with new ones. If the POWER indicator is still off after charging the battery, take the headphones to a Sony dealer. 1 Press the PUSH button of the left housing to open the battery compartment lid. The battery compartment lid comes off. L · Do not place a radio near the system. A noise may be heard from the radio. In such a case, change the angle of the radio or move away from the system so that a noise is not heard. To headphones jack (Stereo mini jack) WALKMAN*, TV, etc. 4 Put on the headphones. When you put on the headphones, the headphone's power turns on automatically. The POWER indicator on the right housing glows red. Be sure to put the right housing R on your right ear and the left housing L on your left ear. Wear the headphones vertically on your head so that auto power on function is properly activated. The effective areas of the transmitter The optimum distance is up to approximately 150 feet without the system picking up some interference. However, the distance may vary depending on the surroundings and environment. If the system picks up some noise within the above mentioned distance, reduce the distance between the transmitter unit and the headphones, or select another channel. Declaration of Conformity Trade Name: Model No.: SONY MDR-RF925R MDR-RF970R (Headphones Unit) Sony Electronics Inc. 16530 Via Esprillo, San Diego, CA 92127 USA 858-942-2230 When the transmitter's POWER/CHARGE indicator does not light up red Check if the right and left headphones are rested on the transmitter correctly. Remove the headphones and replace them on the transmitter again so that the POWER/CHARGE indicator lights in red. B To connect to LINE OUT or REC OUT Responsible Party: Address: Telephone No.: PUSH button Transmitter 2 To recharge the headphone battery after use Insert the supplied rechargeable nickelmetal hydride battery into the battery compartment matching the 3 terminal on the battery to the 3 mark in the compartment. Do not use rechargeable battery ...