USER'S MANUAL
PHPNC45
ACTIVE NOISE CANCELING HEADPHONES
Stereo headphones with active noise canceling function
Operaꢀon
The PHPNC45 headphones are closed, dynamic, ear-enclosing stereo headphones with active
noise canceling function. Disturbing ambient noise in the low frequency range is recorded by tiny
microphones and deleted by counter-sound (phase inverse tones). Thus, a noise canceling of more than
85 % is achieved. For operation, two 1.5 V micro batteries (typeAAA) are required. The PHPNC45 can
also be used passively, ie. without noise canceling and without batteries. The PHPNC45 are swivel
and are supplied complete witha practical transportcase and twoaudio adapters.
Power indicator
On/off
Volume Level
SafetyInstrucꢀons
Adjustthevolume attheheadphones.
To switch on the active noise canceling function and to attenuate ambient noise set the
ON/OFFswitchtoON.ThePOWERindicator lightsup.
Always turndown thevolume control before plugging theheadphones into asound source.
Turn up thevolume control only farenough tohear properly.
If your are connecting these headphones to an airplane's sound system, listen at low levels so that
After you turn on the power of the headphones, you may hear a slight hiss. This is
operating sound of the noise canceling function, not a malfunction.
loud messages fromthepilot donotdiscomfort.
Ringing in theearsmayindicate thatthevolume level istoohigh. Lower thevolume.
Do not use these headphones where vehicular traffic is present, or in any other activity where a
failure tohear surrounding sounds could bedangerous.
Maintenance and service operations are only to be carried out by authorized dealers.
Damage, caused bymanual modifications ontheproduct isnotsubject towarranty.
If this product is used for other purposes than originally intended or if it is not correctly connected, the
product maysufferdamage and theguarantee becomes void.
When the batteries are going flat, the power indicator starts flashing and goes off. The
active noise canceling is switched off. However, the audio signal continues to be
transmitted.
The PHPNC45 can also be used like conventional headphones without batteries to
listen tomusic.
Afteroperation, switchoffthePHPNC45 toextend batterylife.
If the headphones are not used for a longer period, please remove the batteries. Dispose of used
batteries properly tosavetheenvironment.
Cleaning
The headphones should be cleaned from time to time. Please use a soft lint-free and
moistened cloth. Never use alcohol orsolvents!
Seꢁnginto Operaꢀon
Inserting batteries
Transport
Foractive noise canceling you need two1.5Vmicrobatteries (typeAAA).
Toinsertthebatteries, remove theleftear pad (turn the pad counterclockwise to remove).
Insert the batteries as indicated in the battery compartment. Close the compartment again with the
left ear-piece.
To transport the headphones in the transport case fold the ear-pieces inwards between
theheadband.Youcanstoretheaccessories in thelid ofthecase.
If the headphones are not used for a longer period, please remove the batteries to prevent
damage incaseofbatteryleakage.
TechnicalSpecificaꢀons
Adjusting the headband
Transducer type:..............Dynamic
Frequency range: ............30-20,000Hz
Impedance: .....................32
In order to achieve good transmission quality and noise canceling, as well as best possible
comfort, the headband should be adjusted to properly fit your head. You can adjust the headband
using thesnap-in locking mechanism.
Power output: ..................100mW
Noise attenuation:............max. 20 dB
Distortion:........................<1%
Connecting the headphones
Connect the headphones via the supplied audio cable to the sound source. If necessary, use the
6.3 mm jack adapter or the 3.5 mm double jack adapter for the in-flight entertainment in an
airplane.
Cable length: ...................1.0m
Connection:.....................3.5mmstereojack
Power supply:..................2x1.5Vmicro(typeAAA)
Weight: ............................250g
Please note: Every information is subject to change without prior notice. 02.06.2011 ©
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