Sony MDR-RF811R Wireless Stereo Headphone System Instruction Manual
Headphone System
Operating Instructions
The unit is not waterproof. If water or foreign objects enter the unit, it may result in fire or electric shock. If water or a foreign object enters the unit, stop use immediately and consult your nearest Sony dealer. In particular, be careful in the following cases.
– When using the unit around a sink, etc.
Be careful that the unit does not fall into a sink or container filled with water.
-When using the unit in the rain or snow, or in humid locations
-When using the unit while you are sweaty
If you touch the unit with wet hands or put the unit in the pocket of a damp article of clothing, the unit may get wet.
Note on static electricity
Static electricity accumulated in the body may cause mild tingling in your ears. To reduce the effect, wear clothes made from natural materials, which suppress the generation of static electricity.
For details on the effect of contact to the human body from the mobile phone or other wireless devices connected to the unit, refer to the instruction manual of the wireless device.
This product (including accessories) has a magnet(s) that may interfere with pacemakers, programmable shunt valves for hydrocephalus treatment, or other medical devices. Do not place this product close to persons who use such medical devices. Consult your doctor before using this product if you use any such medical device.
Features
Thank you for purchasing the Sony MDR-RF811RK Wireless Stereo Headphone System. Before operating the unit, please read this manual thoroughly and retain it for future reference.
Some features are:
-Wireless system that allows you to listen to a program free from the restriction of a cord.
-High fidelity sound reproduction.
-13 hours of continuous use with a supplied rechargeable battery.
-Easy connection with TV and HiFi Audio system equipment.
-Up to 100 meters reception range.
-Volume control function on the headphones.
Checking the included items
How to use
Insert the supplied rechargeable battery into the left housing of the headphones.
Observe the correct polarity when installing the battery.
Insert the plug firmly.
Connect the A/V component using its headphone jack.
Set the volume of the A/V component as high as possible, but not so high that the audio signal becomes distorted.
Before listening
To reduce the risk of hearing damage, first lower the volume.
Turn on the A/V component.
Adjust the volume.
If you cannot receive a clear audio signal
First, change the radio frequency with the CHANNEL selector switch on the transmitter, then change the radio frequency to that of the transmitter with the channel switch on the headphones.
After use
Take off the headphones, then turn off the power.
About sending RF signals
The transmitter starts sending RF signals automatically when it detects an audio signal from the connected component.
Notes
-If hiss is heard, move closer to the transmitter.
-You may hear some noise when you disconnect the AC adaptor from the transmitter before turning off the headphones.
If no signal or low signal is input for about 4 minutes
If the transmitter does not detect an audio signal for more than about 4 minutes, it will stop sending RF signals, and the POWER indicator will blink for 1 minute, and then turn off.
When the transmitter receives an audio signal again, it starts sending the RF signals, and the POWER indicator will light up green again.
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.
RF signal transmission may stop when an extremely low sound is input for about 4 minutes. If this happens, raise the volume of the connected A/V component within the range where the sound is not distorted, and lower the volume of the headphones.
Tips for charging
Charge the headphones first
The supplied rechargeable nickel-metal hydride battery is not charged from the first time you use them. Charge them before use.
If the transmitter’s POWER indicator does not light up red
Check if the switch on the left housing of the headphones is set to OFF. If the switch is set to ON, the POWER indicator does not light up.
You cannot charge any rechargeable battery or dry battery other than the supplied battery.
Charging and usage time
| Approx. charging time | Approx. usage time1) |
| 1 hour 16 hours2) |
45 minutes 13 hours3) |
- at 1 kHz, 1 mW + 1 mW output
- hours required to fully charge an empty battery
- Time may vary, depending on the temperature or conditions of use.
To recharge supplied battery after use
Connect the headphones to the CHARGE plug of the transmitter after use. The POWER indicator lights up red, then charging starts.
When charging is complete, there is no need to remove the headphones from the transmitter.
Remaining battery
To check the remaining battery charge of the headphones, turn on the switch located on the left housing of the headphone, and check the POWER indicator located on the left housing. The battery is still serviceable when the indicator lights up red.
Charge the headphones if the POWER indicator light dims, flashes or the sound becomes distorted or noisy.
Notes
- Do not connect the CHARGE plug to anything other than these headphones.
- The transmitter automatically stops sending RF signals while charging the battery.
- This system is designed to charge only the supplied rechargeable battery type BP-HP550-11 for safety. Note that other types of rechargeable batteries cannot be charged with this system.
- If dry batteries are installed, they cannot be charged.
- Do not attempt to use the supplied BP-HP550-11 rechargeable battery for other components. They are for use with this system only.
- Charge in an environmental temperature of between 0 °C and 40 °C.
Tips for volume setting
When watching videos, be careful not to raise the volume too high in quiet scenes. You may hurt your ears when a loud scene is played.
To set the input level
If the volume is high using the analog input, set the ATT (attenuator) switch to “–6 dB.”
| Setting | Connected components |
| 0 dB | TV, portable components and other components with a low output level (initial settings) |
| -6 dB | Other components |
Notes
- Be sure to lower the volume before setting the ATT switch.
- If audio input is distorted (sometimes, noise can be heard at the same time), set the ATT switch to “–6 dB.”
Using the headphones with separately-sold dry batteries
Battery life
| Battery | Approx. usage time 1) |
| Sony alkaline battery LR03 (size AAA) | 28 hours 2) |
- at 1 kHz, 1 mW + 1 mW output
- Time may vary, depending on the temperature or conditions of use.
Tips for better reception
Receiving performance
This system utilizes very high-frequency signals in the 800 MHz band so the receiving performance may deteriorate due to the surroundings. The following examples illustrate conditions that may reduce the reception range or cause interference.
- Inside a building with walls containing steel beams.
- An area with many steel file cabinets, etc.
- An area with many electrical appliances capable of generating electromagnetic fields.
- The transmitter is placed on a metal instrument.
- An area facing a roadway.
- Noise or interfering signals exist in the surroundings due to radio transceivers in trucks, etc.
- Noise or interfering signals exist in the surroundings owing to wireless communication systems installed along roadways.
The effective area of the transmitter
The optimum distance is up to approximately 100 m 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 and the headphones, or select another channel.
- When you use the headphones inside the effective area of the transmitter, the transmitter can be placed in any direction from the listener.
- Even within the signal reception area, there are some spots (dead spots) where the RF signal cannot be received. This characteristic is inherent to RF signals and does not indicate malfunction. By slightly moving the transmitter, the location of the dead spot can be changed.
Replacing the earpads
The earpads are replaceable. If the earpads become dirty or worn out, replace them as illustrated below. The earpads are not commercially available. You can order replacements from the store where you purchased this system, or at your nearest Sony dealer.
- Remove the old earpad by pulling it out of the groove on the housing.
- Place the new earpad on the driver unit. Hang the edge of the earpad on one side of the driver unit’s groove edge, then turn the edge of the earpad around the driver unit as illustrated below. When the earpad is securely inserted into the groove, adjust the earpad to the vertical position.
Troubleshooting
If you run into any problems using this system, use the following checklist. Should any problem persist, consult your nearest Sony dealer.
No sound/Low sound
- Turn on the headphones.
- Check the connection of the transmitter and A/V component, AC adaptor, and AC outlet.
- Check that the A/V component is turned on.
- If you connect the transmitter to the headphone jack of an A/V component, raise the volume level on the connected A/V component within the range where the sound is not distorted.
- Change the radio frequency with the CHANNEL selector on the transmitter, then change the radio frequency to that of the transmitter with the channel switch on the headphones.
- Charge the supplied rechargeable battery or replace dry batteries with new ones. If the POWER indicator is still off after charging, take the headphones to a Sony dealer.
Distorted or intermittent sound (sometimes with noise)
- Use the headphones near the transmitter or change the position of the transmitter.
- If you connect the transmitter to an A/V component using the headphone jack, lower the volume level on the connected A/V component within the range where the sound is not distorted.
- Change the radio frequency with the CHANNEL selector on the transmitter, then change the radio frequency to that of the transmitter with the channel switch on the headphones.
- Charge the supplied rechargeable battery or replace dry batteries with new ones. If the POWER indicator is still off after charging, take the headphones to a Sony dealer.
Loud background noise
- If you connect the transmitter to the headphone jack of an A/V component, raise the volume level on the connected A/V component within the range where the sound is not distorted.
- Charge the supplied rechargeable battery or replace dry batteries with new ones. If the POWER indicator is still off after charging, take the headphones to a Sony dealer.
- Use the headphones near the transmitter.
The sound cuts off
- The transmitter turns off if no signal or low signal is input for 4 minutes. If you connect the transmitter to an A/V component using the headphone jack, raise the volume level on the connected A/V component within the range where the sound is not distorted.
The battery cannot be charged/ POWER indicator does not light up red
- Install the supplied rechargeable nickel-metal hydride battery. Dry batteries and rechargeable batteries other than the supplied cannot be charged.
- Check if the switch on the left housing of the headphones is set to OFF. If the switch is set to ON, the POWER indicator does not light up.
Precautions
Notes on the AC adaptor
- Insert the AC adaptor plug firmly.
- Be sure to use the supplied AC adaptor. Using AC adaptors with different plug polarity or other characteristics can cause product failure.
- Be sure to always use the supplied AC adaptor. Even AC adaptors having the same voltage and plug polarity can damage this product due to the current capacity or other factors.
On power sources and placement
- When this system is not to be used for a long period of time, disconnect the AC adaptor from the AC outlet holding the plug, and remove the battery from the headphones to avoid damage caused by battery leakage and subsequent corrosion.
- Do not leave this system in a location subject to direct sunlight, heat or moisture.
- Avoid exposure to temperature extremes, direct sunlight, moisture, sand, dust or mechanical shock.
Specifications
Transmitter (TMR-RF810R)
| Modulation | FM stereo |
| Operating frequency | 863.0 MHz – 865.0 MHz |
| Maximum output power | < 4 mW |
| Channel | Ch1, Ch2 |
| Power source | DC 12 V: supplied AC adaptor |
| Audio input | Stereo mini-plug |
| Dimensions | Approx. 108 mm × 128 mm × 108 mm (w/h/d) |
| Mass | Approx. 137 g |
| Rated power consumption | 3 W |
Headphones (MDR-RF811R)
| Frequency response | 20 Hz – 20,000 Hz |
| Power source | Supplied rechargeable nickel-metal hydride battery BP-HP550-11 or commercially available (size AAA) dry-cell batteries |
| Mass | Approx. 270 g (including the supplied rechargeable nickel-metal hydride battery) |
| Rated power consumption | 2 W |
Design and specifications are subject to change without notice.
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 expose this apparatus to dripping or splashing, and do not place objects filled with liquids, such as vases, on the apparatus.
Do not install the appliance in a confined space, such as a bookcase or built-in cabinet.
As the main plug of AC power adaptor is used to disconnect the AC power adaptor from the mains, connect it to an easily accessible AC outlet. Should you notice an abnormality in it, disconnect it from the AC outlet immediately.
CAUTION
Risk of explosion if the battery is replaced by an incorrect type.
Do not expose the batteries (battery pack or batteries installed) to excessive heat such as sunshine, fire or the like for a long time.
Do not subject the batteries to extreme low-temperature conditions that may result in overheating and thermal runaway.
Do not dismantle, open or shred secondary cells or batteries.
Do not expose cells or batteries to heat or fire. Avoid storage in direct sunlight.
In the event of a cell leaking, do not allow the liquid to come in contact with the skin or eyes. If contact has been made, wash the affected area with copious amounts of water and seek medical advice.
Do not use any charger other than that specifically provided for use with the equipment. Secondary cells and batteries need to be charged before use. Always use the correct charger and refer to the manufacturer’s instructions or equipment manual for proper charging instructions.
After extended periods of storage, it may be necessary to charge and discharge the cells or batteries several times to obtain maximum performance.
Dispose of properly.
High volume may affect your hearing.
The nameplate of transmitter is located on the bottom exterior.
The validity of the CE marking is restricted to only those countries where it is legally enforced, mainly in the countries EEA (European Economic Area) and Switzerland.
The full text of the EU declaration of conformity is available at the following internet address:
http://www.compliance.sony.de/
Hereby, Sony Corporation declares that this equipment is in compliance with the UK relevant statutory requirements. The full text of the declaration of conformity is available at the following internet address: https://compliance.sony.co.uk
This symbol on the product, the battery or on the packaging indicates that the product and the battery shall not be treated as household waste. On certain batteries, this symbol might be used in combination with a chemical symbol. The chemical symbol for lead (Pb) is added if the battery contains more than 0.004% lead. By ensuring that these products and batteries are disposed of correctly, you will help to prevent potential negative consequences for the environment and human health which could be caused by inappropriate waste handling. The recycling of the materials will help to conserve natural resources. In case of products that for safety, performance or data integrity reasons require a permanent connection with an incorporated battery, this battery should be replaced by qualified service staff only. To ensure that the battery and the electrical and electronic equipment will be treated properly, hand over these products at end-of-life to the appropriate collection point for the recycling of electrical
and electronic equipment. For all other batteries, please view the section on how to remove the battery from the product safely. Hand the battery over to the appropriate collection point for the recycling of waste batteries. For more detailed information about recycling of this product or battery, please contact your local Civic Office, your household waste disposal service or the shop where you purchased the product or battery.
Notice for customers: the following information is only applicable to equipment sold in countries applying EU directives and/or UK applying relevant statutory requirements.
UK CAThis product has been manufactured by or on behalf of Sony Corporation.
EU and UK Importer: Sony Europe B.V.
Inquiries to the EU Importer or related to product compliance in Europe should be sent to the manufacturer’s authorized representative, Sony Belgium, bijkantoor van Sony Europe B.V., Da Vincilaan 7-D1, 1930
Zaventem, Belgium.
Inquiries to the UK Importer or related to product compliance in the UK should be sent to the manufacturer’s authorized representative, Sony Europe B.V., The Heights, Brooklands, Weybridge, Surrey KT13 0XW, United Kingdom. This equipment has been tested and found to comply with the limits set out in the EMC regulation using a connection cable shorter than 3 meters.
©2014 Sony Corporation Printed in China
