Sony MDRNC100D Manual

Page of 2
MDR-NC100D [US, LaES] 4-278-671-13 (1)
MDR-NC100D
4-278-671-13 (1)
©2011   Sony Corporation   Printed in Malaysia
Noise Canceling Headphones
Operating Instructions
Manual de instrucciones
(1)
Features
Digital noise canceling headphones with Sony’s 
unique DNC Software Engine. 
Creation of a high-precision canceling signal delivers 
outstanding noise canceling performance.
AI (Artificial Intelligence) Noise Canceling function.  
Select AI NC button for optimal noise canceling mode 
based on intelligent analysis of the environmental 
ambient noise.
Digital Equalizer and full digital S-Master amplifier 
delivers ideal frequency response and high-quality 
music reproduction.
Large 13.5 mm dynamic type driver units deliver a 
wide frequency range and broad dynamic range.
Closed type vertical in-the-ear headphones for 
wearing comfort and secure fitting.
3 sizes of noise isolation earbuds for effective 
attenuation of ambient noise (S, M, L).
Stay-in design for a more secure fit.
Built-in monitor function to hear surrounding sound 
without taking off the headphones.
Able to use as a regular headphones even when the 
POWER switch is set to “OFF”.
Supplied plug adaptor for easy connectivity to stereo 
or dual jack for in-flight music services.
Installing a battery
1
  Push and slide the battery lid on the rear of 
the control box fully, and open. 
Before opening the battery lid, check that the 
claws of the lid are seen.
Claws
2
  Insert one LR03 (size AAA) battery in the 
battery compartment. Observe the correct 
polarity when installing battery.
Insert the  end 
first.
3
  Align the battery lid with the control box 
correctly, then slide to close the battery lid.
Battery life
Battery
Approx. hours*
1
Sony alkaline battery  
LR03 SIZE AAA
22 hours*
2
 
*
1
 1 kHz, 0.1 mW + 0.1 mW output
*
2
 Time stated above may vary, depending on the temperature 
or conditions of use.
Note
The supplied battery was included in the package during 
manufacturing (as a convenience to the user), it is possible 
that the battery life may be 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 the battery is low
Replace the battery with a new one when the POWER 
indicator blinks or lights off.
You can use the headphones even without turning on 
the power. In this case, the noise canceling function, 
Digital Equalizer and S-Master are not active, and the 
headphones operate as passive headphones.
Installing the earbuds
If the earbuds do not fit your ears correctly, the noise 
canceling effect will not be optimal. To optimize noise 
canceling and to enjoy better sound quality, change the 
earbuds to another size, or adjust the earbuds position 
to fit your ears comfortably and snugly.
The M size earbuds are attached to the headphones 
before shipment. If you feel the M size earbuds do not 
suit your ears, replace them with the supplied S or L size 
earbuds. Confirm the size of the earbuds by checking 
color inside. When you change the earbuds, turn to 
install them firmly on the headphones to prevent the 
earbud from detaching and remaining in your ear. 
Noise isolation earbuds
Supplied noise isolation earbuds provides a snug fit for 
effective attenuation of ambient noise.
L
S
M
Colored parts
(Green)
(Light blue)
Small
(Orange)
Pressure-relieving
urethane cushion
Earbud sizes (inside color)
Large
Notes
Prolonged use of the noise isolation earbuds may strain your 
ears due to their snug fit. If you experience discomfort or pain 
in your ears, recommend to take a short break.
The pressure-relieving urethane cushion is extremely soft. 
Therefore, do not pinch or pull the urethane cushion. If the 
urethane cushion is broken or detached from the earbuds, it 
will not take its correct position and the earbuds will lose their 
noise isolation function.
The pressure-relieving urethane cushion may deteriorate due 
to long-term storage or use. If the pressure-relieving power is 
lost and the urethane cushion becomes hard, the earbuds may 
lose their noise isolation function.
Do not wash the noise isolation earbuds. Keep them 
dry, and avoid accumulation of water in the pressure-
relieving urethane-cushions. Not doing so may cause early 
deterioration.
To detach an earbud
While holding the headphone, twist and pull the earbud 
off.
Tip
If the earbud slips and cannot be detached, wrap it in a dry soft 
cloth.
To attach an earbud
Twist and push the earbud onto the headphone to where 
the end of the earbud’s colored part aligns with 
.
English
Noise Canceling Headphones
WARNING
To reduce the risk of fire 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 
qualified 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.
The following FCC statement applies only 
to the version of this model manufactured 
for sale in the USA. Other versions may not 
comply with FCC technical regulations.
NOTE
This equipment has been tested and found to comply 
with the limits for a Class B digital device, pursuant 
to Part 15 of the FCC Rules. These limits are designed 
to provide reasonable protection against harmful 
interference in a residential installation. This equipment 
generates, uses and can radiate radio frequency energy 
and, if not installed and used in accordance with the 
instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that 
interference will not occur in a particular installation. 
If this equipment does cause harmful interference to 
radio or television reception, which can be determined 
by turning the equipment off and on, the user is 
encouraged to try to correct the interference by one or 
more of the following measures:
Reorient or relocate the receiving antenna. 
Increase the separation between the equipment and 
receiver.
Connect the equipment into an outlet on a circuit 
different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV 
technician for help.
You are cautioned that any changes or modifications 
not expressly approved in this manual could void your 
authority to operate this equipment.
Listening to the music
1
  Connect the headphones to the AV 
equipment.
Plug adaptor (supplied)
When connecting to dual or 
stereo mini jacks of in-flight music 
services.
To headphone jacks 
on airplane seats
When connecting to the stereo 
mini jack of a WALKMAN*, etc.
*
  “WALKMAN” and “WALKMAN” logo are registered 
trademarks of Sony Corporation.
2
  Wear the headphones marked  in your right 
ear and the one marked  ( has a tactile 
dot for ease of use.) in your left ear. Push the 
earbud into your ear carefully so that the 
earbud fits the hole of your ear snugly.
Note
Be sure the earbuds fit your ears correctly, otherwise noise 
canceling will not function properly.
Adjust the earbuds position to sit on your ear comfortably 
so that they fit your ears snugly.
Stay-in design for a more secure fit
Headphones have projection at rear side. It will fit at the 
hollow in the ear.
Stay-in design
Tip
The stay-in design uses a thermoplastic elastomer that is pliable 
to fit the hollow of your ear. If it does not stabilize, adjust its 
position.
3
  Turn on the power of the headphones.
  The POWER indicator lights up in green. 
When power is turned on, ambient noise is 
reduced, and you can listen to music more 
clearly at a lower volume.
POWER indicator
POWER switch
Notes
After you turn on the power of the headphones, you may hear 
a slight hiss. This is the operating sound of the noise canceling 
function, not a malfunction.
Do not cover the microphone of the headphones with your 
hands. The noise canceling function may not work properly.
Microphone
4
  Turn on the power of the AV equipment.
Notes on using on the airplane
The supplied plug adaptor can be connected to the 
dual or stereo mini jacks of in-flight music services.
dual jacks
stereo mini jacks
Do not use the headphones when use of electronic 
equipment is prohibited or when use of personal 
headphones for in-flight music services is prohibited.
Utilizing the AI Noise 
Canceling
AI Noise Canceling
AI Noise Canceling is a useful function that 
automatically selects one of the noise canceling modes. 
This function provides the most effective noise canceling 
mode by immediately analyzing ambient sound 
components when the AI NC button is pressed.
Press the AI NC button.
When you press the AI NC button and the POWER 
switch is set to “ON”, beep sounds come from the 
headphones to inform you that the unit has started 
analyzing ambient sound components (approx. 3 
seconds).
During analysis, sound reproduction from the unit is 
stopped and the POWER indicator blinks.
When analysis is completed, the most effective noise 
canceling mode is set automatically, and sound 
reproduction from the headphones starts.
POWER indicator
AI NC button
Noise canceling mode types
NC Mode A:  Noise mainly in an airplane is effectively 
reduced.
NC Mode B:  Noise mainly in a bus or a train is 
effectively reduced.
NC Mode C:  Noise mainly found in an office 
environment (PC, copier, air ventilation, 
etc.) is effectively reduced.
Tips
When the power of the headphones is turned on, NC Mode 
A is set. (See “Noise canceling mode types” for details about 
NC Mode A.)
Press the AI NC button again to reset the noise canceling 
mode if ambient noise has changed, such as when you move 
outdoors from a room.
Hearing environmental 
sound for safety
Press the MONITOR button while the POWER switch 
is set to “ON”, playback silences, and you can hear the 
surrounding environment. To cancel this function, press 
the MONITOR button again.
MONITOR button
Beep sound and 
indicator status
Status/
Function
Beep sound
Indicator
Power off
No beep
Lights off
Power on
Beep once
Lights on
AI NC
Beep twice
Blinks twice
MONITOR
Beep once
Blinks slowly
Low battery
Long beep  
(2 seconds)
Blinks quickly 
(lights off after 
30 seconds)
Using the clip
You can fasten the control box by its clip on a shirt 
pocket.
Clip
Using the supplied cord 
adjuster
You can adjust the cord length by winding the cord on 
the cord adjuster. (The cord can be wound to the cord 
adjuster up to 40 cm (15 
3
/
4
 in). If you wind more, the 
cord comes off from the cord adjuster easily.) 
Cord  
adjuster
1
  Wind the cord.
2
  Push cord into slot hole to secure in place.
When carrying the headphones
The headphones and the control box can also be 
separately stored in the partitioned carrying pouch 
(supplied).
Pocket for 
accessories
After use
Turn off the power of the headphones.
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.
The noise canceling effect may vary depending on how 
you wear the headphones.
The noise canceling function works for noise in the 
low frequency band primarily. 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.
Mobile phones may cause interference and noise. 
Should this occur, locate the headphones further away 
from the mobile phone.
If headphone sound is noisy, move the control box 
away from sources of interference, such as a radio, etc.
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 earbuds 
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.
Do not subject the headphones to excessive shock.
Handle the driver units carefully.
If you feel drowsy or sick while using these 
headphones, stop use immediately.
Install the earbuds firmly onto the headphones. If an 
earbud accidentally detaches and is left in your ear, it 
may cause injury.
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 traffic accident. Also, avoid listening with 
your headphones in situations where hearing must 
not be impaired, for example, a railroad crossing, a 
construction site, etc.
Note on static electricity 
In particularly dry air conditions, noise or sound 
skipping may occur, or mild tingling may be felt on your 
ears. This is a result of static electricity accumulated in 
the body, and not a malfunction of the headphones.
The effect can be minimized by wearing clothes made 
from natural materials.
If you have any questions or problems concerning 
the system that are not covered in this manual, please 
consult your nearest Sony dealer.
Troubleshooting
No sound.
Replace the battery. You can use the headphones even 
without turning on the power. In this case, the noise 
canceling function, Digital Equalizer and S-Master 
are not active, and the headphones operate as passive 
headphones.
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.
The noise canceling effect is not sufficient.
Change the earbuds to another size that fits your ears.
Adjust the earbud position to fit your ears comfortably.
The noise canceling function is effective in low 
frequency ranges such as airplanes, trains, or offices 
(near air-conditioning, etc.) and is not as effective for 
higher frequencies, such as human voices.
Turn on the headphones.
Distorted sound.
Turn down the volume of the connected AV 
equipment.
Power does not turn on.
Check if the battery has expired (the POWER indicator 
lights off). Replace the battery with a new one.
No operation works.
Set the POWER switch of the headphones to “OFF”, 
confirm the connections, and then set the POWER 
switch back to “ON”.
The sound of the connected source device, 
such as radio and TV, cannot be heard, or 
headphone sound is noisy.
Move the control box away from the connected source 
device.
Specifications
General
Type 
Dynamic, closed
Driver units 
13.5 mm, dome type (CCAW adopted)
Power handling capacity 
50 mW
Impedance 
70 
 at 1 kHz  
(when the power is on) 
16 
 at 1 kHz  
(when the power is off)
Sensitivity 
110 dB/mW (when the power is on) 
103 dB/mW (when the power is off)
Frequency response 
 
8 Hz – 23,000 Hz
Total Noise Suppression Ratio*
1
 
 
Approx. 17.5 dB*
2
Cord 
Approx. 1.5 m (59 
1
/
8
 in) OFC Litz cord, 
neck-chain (including control box)
Plug 
Gold-plated L type stereo mini plug
Power source 
DC 1.5 V, 1  LR03 (size AAA) battery 
Mass 
Approx. 9 g (0.4 oz) headphones (not 
including cord)
 
Approx. 26 g (1 oz) control box 
(including battery, not including cord) 
Included items
Headphones (1)
Plug adaptor for in-flight use*
3
 (single/dual) (1)
Noise Isolation Earbuds (S  2, M  2, L  2)
Cord adjuster (1)
Carrying pouch (1)
Sony LR03 (size AAA) battery (1)
Operating Instructions (1)
Warranty card (1)
*
1
 Under the Sony measurement standard.
*
2
 Equivalent to approx. 98.2% reduction of energy of sound 
compared with not wearing headphones.
*
3
 May not be compatible with some in-flight music services.
Design and specifications are subject to change without notice.
Tactile dot (inside)