Sony Headphones MDR-NC7 User Manual download pdf

MDR-NC7 [US] 4-111-700-21 (1)

MDR-NC7

4-111-700-21 (1)

Operating Instructions

Manual de instrucciones

(1)

Noise Canceling

Headphones

WARNING

To reduce the risk of ﬁ re or electric

shock, do not expose this apparatus

to rain or moisture.

To reduce the risk of electrical

shock, do not open the cabinet.

Refer servicing to qualiﬁ ed

personnel only.

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference,

and (2) this device must accept any interference

received, including interference that may cause

undesired operation.

You are cautioned that any changes or modiﬁ cations

not expressly approved in this manual could void

your authority to operate this equipment.

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).

Features

• Noise canceling headphones reduce unwanted

ambient noise, providing a quieter environment to

enhance your listening experience. A microphone

inside each earpad works with an electronic circuit

to create an opposite sound wave to cancel out the

noise.

• Foldable and swivel design for easy portability.

• Dual use capability allows option to listen to music

with or without noise cancellation.

• Neodymium magnet delivers powerful sound.

• Supplied plug adaptor for easy connectivity to

stereo or dual jack for in-ﬂ ight music services.

Installing a

battery

Rotate the left housing as illustrated.

English

Push the OPEN button to open the battery

lid.

3 Insert one R03 (size AAA) battery by

matching the

on the battery to the

in the battery case.

4 Close the lid.

Battery life

Battery Approx.

hours

∗

Sony alkaline battery 50 hours*

LR03 SIZE AAA

Sony manganese battery 25 hours*

R03 SIZE AAA

1 kHz, 0.1 mW + 0.1 mW output

Time stated above may vary, depending on the

temperature or conditions of use.

Note

Because the supplied battery was included in

the package from the time of manufacture (as a

convenience to the user), it is possible that the

battery life may be somewhat depleted by the time of

purchase. The actual life of the supplied battery may

be shorter than the standard time described in this

manual when using a fresh battery.

When to replace the battery

Replace the battery with a new one when the

POWER indicator dims. The noise canceling

feature may not work correctly if battery power

is low.

If the battery lid is detached

Attach it as illustrated.

Plug adaptor

(supplied)

When connecting to dual or

stereo mini jacks of in-ﬂ ight

music services.

To headphone jacks

on airplane seats

When connecting to the

headphone jack (stereo

mini jack) of a

WALKMAN ®*, etc.

When connecting to a

remote commander with

a stereo mini jack of a

WALKMAN ®*, etc.

Remote commander

Folding the

headphones

Rotate the housings to make them ﬂ at for

easy storage in the seat pocket.

Restore to their usual position before using.

Fold the headphones as illustrated for easy

storage in the carrying pouch (supplied).

Precautions

The headphones contain a noise canceling circuit.

What is noise canceling?

The noise canceling circuit actually senses outside

noise with built-in microphones and sends an equal-

but-opposite canceling signal to the headphones.

• The noise canceling effect may not be pronounced

in a very quiet environment, or some noise may be

heard. In such a case, turn the POWER switch off.

• The noise canceling effect may vary depending on

how you wear the headphones.

• When you turn the POWER switch on, the

operation sound of the noise canceling may be

noticeable. This is not a malfunction.

• The noise canceling function is only effective for

noise in the low frequency band. Although noise

is reduced, it is not canceled completely.

• When you use the headphones in a train or a car,

noise may occur depending on street conditions.

In such a case, turn the POWER switch off.

• You can use the headphones without turning

on the power. In this case, the noise canceling

function is not active, and the headphones operate

as passive headphones.

• Howling may occur if you do not wear the

headphones correctly.

• Howling may occur if you place an object such as

ﬁ nger close to the noise canceling microphone.

Keep it away from the microphone.

• Mobile phones may cause interference and

noise. To avoid interference, use noise canceling

feature only with wireless transmitters turned

off (Airplane Mode). Interference noise can also

occur from nearby mobile phones. Should this

occur, locate the headphones further away from

the mobile phone.

Notes on usage

• Clean the headphones with a soft dry cloth.

• Do not leave the plug dirty otherwise the sound

may be distorted.

• Be sure to consult a Sony dealer when the

earpads become dirty or damaged, or when the

headphones require repair work.

• Do not leave the stereo headphones in a location

subject to direct sunlight, heat or moisture.

Notes on headphones

Preventing 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.

Do not use headphones while driving and

cycling, etc.

As headphones reduce outside sounds, they may

cause a trafﬁ c accident. Also, avoid listening with

your headphones in situations where hearing must

not be impaired, for example, a railroad crossing, a

construction site, etc.

Troubleshooting

No sound

• Check the connection of the headphones and the

AV equipment.

• Check that the connected AV equipment is

turned on.

• Turn up the volume of the connected AV

equipment.

• Replace the battery.

Mufﬂ ed sound

• Turn down the volume of the connected AV

equipment.

• Replace the battery.

Power does not turn on

• Check if the battery has expired (the POWER

indicator dims). Replace the battery with a new

one.

Howling

• Make sure you are wearing the headphones

correctly.

Speciﬁ cations

General

Type Closed, dynamic

Driver unit 30 mm, dome type (CCAW

adopted)

Power handling capacity

100 mW

Impedance 33 Ω at 1 kHz

(when the power is on)

35 Ω at 1 kHz

(when the power is off)

Sensitivity 102 dB/mW

(when the power is on)

100 dB/mW

(when the power is off)

Frequency response

30 – 20,000 Hz

Total Noise Suppression Ratio*

Approx. 9 dB*

Cord Approx. 1.5 m (59

in) OFC

litz cord

Power source DC 1.5 V, 1 × R03 (size AAA)

battery

Mass Approx. 134 g (4.7 oz)

including battery

Supplied accessories

Sony R03 (size AAA) battery (1)

Carrying pouch (1)

Plug adaptor for in-ﬂ ight use*

(single/dual) (1)

Operating Instructions (1)

Under the Sony measurement standard.

Equivalent to approx. 87.4 % reduction of energy

of sound compared with not wearing headphones.

May not be compatible with some in-ﬂ ight music

services.

Design and speciﬁ cations are subject to change

without notice.

Listening to

music

Connect the headphones to the AV

equipment.

* “WALKMAN” and “WALKMAN” logo are

registered trademarks of Sony Corporation.

2 Turn on the power of the headphones.

The POWER indicator lights in red.

When the power is turned on, ambient

noise is reduced, and you can listen to

music more clearly at a lower volume.

Note

The noise canceling microphone is built inside each

earpad. Do not put weight or force on the microphone

as it may damage the microphone.

3 Wear the headphone marked R on your

right ear and the one marked L on your

left ear.

4 Turn on the power of the AV equipment.

When using in an airplane

• The supplied plug adapter can be connected to the

dual or stereo mini jacks in an airplane.

for dual jacks for stereo mini jack

• Do not use the headphones when use of electronic

equipment is prohibited or when use of personal

headphones for in-ﬂ ight music services is

prohibited.

If you have any questions or problems concerning

the system that are not covered in this manual,

please consult the nearest Sony dealer.

After listening to music

Turn off the power of the headphones.

Insert the E end

ﬁ rst.

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Summary of Contents

Page 1 - Headphones

Page 2 - MDR-NC7 [US] 4-111-700-21 (1)

MDR-NC7 [US] 4-111-700-21 (1)4 Cierre la tapa. Duración de la bateríaBatería Horas aproximadas∗1Baterías alcalinas de Sony 50 horas*2LR03 tamaño

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Sony Headphones MDR-NC7 User Manual

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