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Active Speaker System

RDP-NWD300

©2010  Sony Corporation     Printed in Malaysia

Operating Instructions

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, do not cover the ventilation opening of the apparatus with 

newspapers, tablecloths, curtains, etc. Do not place the naked flame sources such as 

lighted candles on the apparatus.
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.
The nameplate is located on the bottom exterior of the system.
The system is not disconnected from the mains as long as it is connected to the AC 

outlet, even if the system itself has been turned off.
As the main plug is used to disconnect the system from the mains, connect the system to 

an easily accessible AC outlet.

Should you notice an abnormality in the system, disconnect the main plug from the AC 

outlet immediately.
Do not expose batteries or apparatus with battery-installed to excessive heat such as 

sunshine, fire or the like.

WARNING

Danger of explosion if battery is incorrectly replaced. Replace only with the same or 

equivalent type.

Notice for customers: the following information is only applicable to 

equipment sold in countries applying EU directives

The manufacturer of this product is Sony Corporation, 1-7-1 Konan Minato-ku Tokyo, 

108-0075 Japan. The Authorized Representative for EMC and product safety is Sony 

Deutschland GmbH, Hedelfinger Strasse 61, 70327 Stuttgart, Germany. For any service 

or guarantee matters please refer to the addresses given in separate service or guarantee 

documents.
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).

Disposal of Old Electrical & Electronic Equipment 

(Applicable in the European Union and other European 

countries with separate collection systems)

This symbol on the product or on its packaging indicates that this 

product shall not be treated as household waste. Instead it shall be handed 

over to the applicable collection point for the recycling of electrical and 

electronic equipment. By ensuring this product is disposed of correctly, 

you will help prevent potential negative consequences for the 

environment and human health, which could otherwise be caused by inappropriate waste 

handling of this product. The recycling of materials will help to conserve natural 

resources. For more detailed information about recycling of this product, please contact 

your local Civic Office, your household waste disposal service or the shop where you 

purchased the product.

Applicable accessories: Active Speaker System

Disposal of waste batteries (applicable in the European 

Union and other European countries with separate 

collection systems)

This symbol on the battery or on the packaging indicates that the battery 

provided with this product shall not be treated as household waste.

On certain batteries this symbol might be used in combination with a chemical symbol. 

The chemical symbols for mercury (Hg) or lead (Pb) are added if the battery contains 

more than 0.0005% mercury or 0.004% lead.

By ensuring these batteries are disposed of correctly, you will help prevent potentially 

negative consequences for the environment and human health which could otherwise be 

caused by inappropriate waste handling of the battery. 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 will be treated properly, hand over the product at end-of-life to 

the applicable 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 applicable 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.

“WALKMAN” and the “WALKMAN” logo are registered trademarks of Sony 

Corporation.

Precautions

On safety

  AC cord must be changed only at the qualified service shop.

  Use only the supplied AC power adaptor. Do not use any other AC power adaptor.

 

Polarity of the plug

  The nameplate is located on the bottom exterior.

  Before operating the system, be sure that the operating voltage of the system is 

identical with that of your local power supply. 

Where purchased

Operating voltage

All countries/regions

100 V - 240 V AC, 50/60 Hz

  The main unit is not disconnected from the AC power source (mains) as long as it is 

connected to the AC outlet, even if the main unit itself has been turned off.

  After operating the system with the AC power adaptor, disconnect the AC power 

adaptor from the wall outlet if the system is not to be used for an extended period of 

time. Just switching the 

/

 (power/standby) button to standby does not turn the AC 

power adaptor off.

On placement

  Do not place the system in an inclined position.

  Do not place the system in locations that are hot and subject to direct sunlight, dusty, 

very humid, or extremely cold.

  Do not leave the system in a location near heat sources, or in a place subject to direct 

sunlight, excessive dust, moisture, rain or mechanical shock.

  Use caution when placing the system or AC power adaptor on a specially treated 

(waxed, oiled, polished, etc.) floor, as staining or discoloration may result.

On cleaning

  Clean the cabinet, panel, and controls with a soft cloth slightly moistened with a mild 

detergent solution. Do not use any type of abrasive pad, scouring powder or solvent 

such as alcohol or benzine. 

If you have any questions or problems concerning your system, please consult your 

nearest Sony dealer.

On operation

  Should any solid object or liquid fall into the system, have the system checked by 

qualified personnel before operating it any further.

  Although this system is magnetically shielded, do not leave recorded tapes, watches, 

personal credit cards, or floppy disks with magnetic coding in front of the system for 

an extended period of time.

If the TV picture or monitor display is magnetically distorted

  Although this system is magnetically shielded, there may be cases that the picture on 

some TV sets/personal computer sets may become magnetically distorted. In such a 

case, turn off the power of the TV set/personal computer set once, and after 15 to 30 

minutes turn it on again. For the personal computer set, take the appropriate measures 

such as data storage before turning it off. 

When there seems to be no improvement, locate the system further away from the TV 

set/personal computer set. Furthermore, be sure not to place objects in which magnets 

are attached or used near the TV set/personal computer set, such as audio racks, TV 

stands, toys etc. These may cause magnetic distortion to the picture due to their 

interaction with the system.

Features

  Powerful sound of integrated 10 W output.

  Sony’s proprietary Current Drive system for pure and realistic sound.

  Music playback and data transfer from the computer one-touch switchable with the 

PC MODE button.

  Available for charging the “WALKMAN” and operating the “WALKMAN” with the 

remote commander.

  LINE IN jack for connecting external audio device.

  Stylish design integrates with the interior of room.

Front

Rear

To the mains

To DC IN 13V jack

AC power adaptor 

(supplied)

AC cord (supplied)

Identifying parts

Main unit (See fig. 

)

 

/

 (power/standby) button

 

/

 (power/standby) indicator

  LINE INPUT button

  LINE INPUT indicator

  PC MODE button

  PC MODE indicator

*1

  WM-PORT

*2

 plug (for connecting to “WALKMAN”)

 

 (muting) indicator

While muting the sound, the 

 (muting) indicator lights up. When the volume is 

the maximum or minimum, the 

 (muting) indicator flashes.

  /– button

*3

  Remote sensor

  LINE IN jack

  DC IN 13V jack

  WM-PORT jack (for connecting to a computer)

Remote commander (See fig. 

)

 



 (previous or next track) buttons

 

 (play/pause) button

*4

 



 (fast-rewind/fast-forward) buttons

 

 (stop) button

  MUTING (muting) button

The 

 (muting) indicator of the main unit lights up.

 

/

 (power/standby) button

  VOL (volume) +/– buttons

*3

*1

 While the PC MODE indicator is on, a “WALKMAN” cannot be operated.

*2

 The WM-PORT is a dedicated multi-terminal connector, used to connect a “WALKMAN” to its 

accessories.

*3

 The button has a tactile dot for ease of use.

*4

 

 (play/pause) button has a tactile dot for ease of use.

Notes

 Some operations of the remote commander may not work, or work differently as indicated, 

depending on the specification of the “WALKMAN” you are using.

 When the audio device is connected to the LINE IN jack, the 



 buttons of the remote 

commander do not function.

 When a “WALKMAN” is set on the main unit, you can adjust the volume via the main unit, but the 

volume setting of the “WALKMAN” will not change.

 Loud sound may come out suddenly, depending on the volume settings on each device.

 With a “WALKMAN” connected, pressing 

 on the remote commander may not start playback. 

In this case, press any button on the “WALKMAN,” then remote commander operation becomes 

available.

Power Sources (See fig. 

)

Connect the AC power adaptor (supplied) to the DC IN 13V jack of the main unit.

Notes

 Turn off the main unit before disconnecting the AC power adaptor. If the AC power adaptor is 

connected then disconnected from the main unit without turning off the main unit, it may cause a 

malfunction.

 Use only the supplied AC power adaptor. Do not use any other AC power adaptor to avoid damaging 

the main unit.

 The supplied AC cord is only for the main unit. It should not be used with other electric equipment.

Polarity of the plug

 Plug the AC power adaptor into an easily accessible mains. In the case of a problem, unplug from the 

mains immediately.

 Do not place the AC power adaptor on a bookshelf, or in a confined place such as a cabinet.

 Do not use the AC power adaptor in a place subject to liquid or moisture to avoid fire or electric 

shock. Furthermore, do not place liquid-filled vessels, such as a vase, etc., on the AC power adaptor.

Specifications

Speaker section

Speaker system 

50 mm Full range, magnetically shielded

Enclosure type 

Bass reflex

Impedance 

4 Ω

Maximum input power 

7 W

Amplifier section

Practical maximum output 

5 W + 5 W (1 kHz, 4 Ω)

Input impedance 

LINE IN jack 45 kΩ (at 1 kHz)

General

Power 

DC 13 V 2 A (via supplied AC power adaptor,  

AC 100 V - 240 V power supply)

Input/output 

WM-PORT plug × 1, WM-PORT jack × 1, LINE IN 

jack (stereo mini) × 1, DC IN jack × 1

Dimensions (w/h/d) 

Approx. 285 × 95 × 119 mm

Mass 

Approx. 830 g

Operating temperature 

5° C to 35° C

Supplied accessories

AC power adaptor (1)

AC cord (1)

Remote commander (1)

Lithium battery CR2025 (1) 

(preinstalled for the trial use of the remote commander)

Attachment for “WALKMAN” (2)

Operating Instructions (1)

Warranty card (1)

Design and specifications are subject to change without notice.

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