3
Put on the headphones so that the ear pads cover
your ears.
3-810-317-14(1)
Ow n e r’s Re co rd
In st a llin g a b a t t e ry
List e n in g t o m u sic
Fo ld in g a n d u n fo ld in g t h e
h e a d p h o n e s
Tro u b le sh o o t in g
The model number is located at the rear side of the
battery box.
The serial number is located at the both sides of the
head band.
Record these numbers in the spaces provided below.
Refer to them whenever you call upon your Sony
dealer regarding this product.
No so u n d
1
Open the lid of the battery box on the right outer
side of the headphone.
No ise Ca n ce lin g
He a d p h o n e s
• 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.
1
Connect the headphones to the AV equipment.
Un fo ld in g
When connecting to dual or
stereo mini jacks of in-flight
music services.
Operating Instructions
Manual de instrucciones
Model No. MDR-NC20
Serial No.
Connecting cord
(supplied)
Mu ffle d so u n d
• Turn down the volume of the connected AV
equipment.
4
Turn on the power of the AV equipment.
• Replace the battery.
No t e s o n u sin g o n t h e a irp la n e
• The supplied plug adaptor can be connected to dual
and stereo mini jacks.
2
Insert one R03 (size AAA) battery by matching the
+ and – on the battery to the + and – in the battery
box.
Fe a t u re s
To headphone jack
on airplane seats
• Noise canceling headphones reduce ambient noise,
and provide a quieter environment to enhance audio
entertainment. Ambient sound is synthesized with
an anti-sound signal produced by the noise
canceling circuit, and reduced. (Over 10 dB is
reduced at 300 Hz.)
Sp e cifica t io n s
When connecting to the
headphones jack (stereo mini
jack) of a WALKMAN, etc.
Fo ld in g
General
Type
Dynamic, closed
Driver units
Impedance
30 mm dia: dome type
24 ohms at 1 kHz
(when the power is on)
56 ohms at 1 kHz
(when the power is off)
102 dB/ mW (when the power is on)
100 dB/ mW (when the power is off)
Connecting cord
(supplied)
dual jacks
stereo mini jacks
• Compact folding Style
• Neodymium magnets are used to deliver powerful
sound.
• Operates as passive headphone when noise
canceling circuit is not activated.
• Plug adaptor is supplied to connect directly to stereo
or dual jack of inflight music services.
• Plug types are compatible with Sony WALKMAN*
remote controllers and stereo mini jacks of audio
and visual equipment.
• Do not use the headphones when use of electronic
equipment is prohibited or when use of personal
headphones for inflight music services is prohibited.
MDR-NC20
Sensitivity
3
Close the lid.
© 1996 Sony Corporation Printed in China
If you have any questions or problems concerning the
system that are not covered in this manual, please
consult the nearest Sony dealer.
Frequency response
16 – 22,000 Hz
Frequency range of active noise attenuation
40 – 1,500 Hz more than 10 dB at
300 Hz
En g lish
Aft e r list e n in g t o m u sic
Turn off the power of the headphones.
Micro plug
* WALKMAN is a trademark of Sony Corporation.
Pre ca u t io n s
Input cord
0.5 m cord with a gold-plated
microplug
DC 1.5 V, 1 × R03 (size AAA) battery
Approx. 175 g (6.2 oz) including
battery
Notes
WARNING
• Clean the headphones with a soft dry cloth.
• Do not leave the plug dirty otherwise the sound may
be distorted.
• Be sure to bring the headphones to a Sony dealer
when requiring a change of ear pads or repair work.
• The CE mark on the unit is valid only for products
marketed in the European Union.
When connecting to the micro
jack on the remote controller of
a WALKMAN, etc.
Power source
Mass
• The noise canceling function is only effective for noise in
the low frequency band. Although noise is reduced, it
is not canceled completely.
• Do not cover the microphone of the headphones with
your hands. The noise canceling function may not work
properly.
To p re ve n t fire o r sh o ck h a za rd , d o n o t
e xp o se t h e u n it t o ra in o r m o ist u re .
Ba t t e ry life
To a vo id e le ct rica l sh o ck, d o n o t o p e n t h e
ca b in e t . Re fe r se rvicin g t o q u a lifie d
p e rso n n e l o n ly.
Supplied accessories
Connecting cord 1m (39 3/
in.) (a gold-plated micro
jack t a gold-plated L shaped stereo mini plug) (1)
Plug adaptor for in-flight use (single/ dual) (1)
Carrying case (1)
Battery
Approx. hours
8
Sony alkaline LR03 (size
AAA) battery
40 hours
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.
• Do not leave the stereo headphones in a location
subject to direct sunlight, heat or moisture.
WARNING
Sony R03 (size AAA) battery
20 hours
Operating instructions (1)
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.
No t e s o n h e a d p h o n e s
Pre ve n t in g h e a rin g d a m a g e
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.
Wh e n t o re p la ce t h e b a t t e ry
Replace the battery with a new one when the POWER
indicator dims.
Design and specifications are subject to change
without notice.
Microphone
You are cautioned that any changes or modifications
not expressly approved in this manual could void
your authority to operate this equipment.
Do n o t list e n w it h t h e h e a d p h o n e s w h ile
d rivin g o r cyclin g
As your headphones reduce outside sounds, it may
cause traffic accident. Also avoid using them where
hearing must not be impaired, for example, a railroad
crossing, a site of construction, etc.
• The noise canceling function may not work properly
unless the headphones are put on firmly.
• 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.
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