PXC 450
Bedienungsanleitung
Instruction Manual
Notice d‘emploi
Istruzioni per l‘uso
Instrucciones de uso
Gebruiksaanwijzing
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Safety instructions
Read these
y Read these instructions carefully and completely
instructions
before using this device.
carefully and
completely before using
this device.
y Save the instructions for further use, so they are
accessible to the user at all times. Always include
the operating instructions when giving this device
to a third party.
y Do not use the headphones in environments
requiring particular attention (e.g. on roads or
while carrying out manual work).
y Always keep the headphones dry and do not
expose them to either extreme high or low
temperatures (ideal: 10 °C to 35 °C).
y
Treat headphones with care and store them in a
clean, dust-free location.
y Switch off the headphones when not in use to spare
the batteries. Remove the batteries if the
headphones will not be used for longer periods.
y Protect your hearing from loud volumes.
Sennheiser headphones also sound very good at
low volumes.
Appropriate use of the headphones
Appropriate use of the headphones includes:
y that you have read these instructions, especially
the “Safety instructions“ section,
y that you only use the headphones in operating
conditions as described in the instructions.
2
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Inappropriate use
Inappropriate use includes if you use the headphones differently than described in
the instructions, or do not maintain operating conditions.
Safety instructions for battery and rechargeable battery use
Batteries/rechargeable batteries can leak with abuse or improper use. In extreme
cases, there is the risk of explosion or fire. Sennheiser therefore assumes no liability
in cases of abuse or improper use.
Immediately remove empty
Do not store in reach of
batteries/rechargeable batteries
children.
from the device.
Do not heat or throw into
Observe polarity.
fire.
Switch off (rechargeable) battery
Do not short circuit.
Do not solder.
operated devices after use.
Remove batteries/rechargeable
batteries from the device if will not
be used for an extended period.
Do not disassemble or
deform.
Use only appropriate Sennheiser
chargers for rechargeable batteries.
Do not mix batteries and
rechargeable batteries
without packaging.
Recharge rechargeable batteries
after longer periods of disuse before
using.
Do not mix empty and fully
charged batteries/
rechargeable batteries.
Only charge rechargeable batteries
at ambient temperatures between
10 °C and 40 °C.
Only dispose of used batteries/
rechargeable batteries at collection
sites or return them to your dealer.
Do not charge disposable
batteries.
3
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Included with delivery
The following are delivered with the PXC 450:
1 PXC 450 headphones
1 Soft case
1 Audio adapter (6.3-mm stereo plug)
1 Inflight adapter (2 x 3.5-mm mono plug)
2 Micro batteries (AAA)
1 Operating instructions
PXC 450 Headphones
The PXC 450 is a closed, dynamic, ear-enclosing stereo
headset with newest-generation active noise
compensation (NoiseGard 2.0) for use, for example,
with inflight entertainment systems. Passive and active
tone suppression together enable brilliant music
enjoyment even in noisy environments.
4
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TalkThrough
TalkThrough allows direct communication with your
environment, even while wearing headphones. The
NoiseGard 2.0 and peak level protection remain
active, and your hearing remains protected.
NoiseGard 2.0
The active noise compensation, NoiseGard 2.0, is
based on the principle of deleting tones in the low
frequency range (to 1 kHz) with inverse tones (phase-
inverse tone). Tiny microphones record the ambient
noise. NoiseGard 2.0 electronics creates a sound wave
that is phase-inverted by 180° to the interfering tone
- resulting in the two sound waves almost canceling
each other out.
Additional features
y Excellent sound quality through patented adaptive
baffle damping and duofol diaphragm system
y Ideal for traveling: comfortable, sturdy and folding
design with one-sided cable connection
y Perfectly suited for use in inflight entertainment
systems as well as mobile music sources
y Headphones can also be used without cable to
dampen noise
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Control elements
³
¸
¶
µ
º
¾
·
»
²
´
¿
³ Headband
Normal/bypass sliding switch
² VOLUME – button
¶ TalkThrough button
º LED (red/green)
¾ VOLUME + button
µ Ear cushions
·
» Connection for audio cable
¿ Audio cable
´ ON/OFF button
¸ Battery compartment
Signal from LED display º:
LED
Meaning
red
NoiseGard 2.0 is switched on (see page 11)
green
flashing
TalkThrough is switch on (see page 12)
Batteries or rechargeable batteries almost empty (see page 7)
6
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Commissioning
Inserting and replacing batteries
For active noise compensation (NoiseGard function)
you need a battery or rechargeable battery (AAA).
̈ Open battery compartment ¸ on the right ear cup.
̈ Remove the used battery.
¸
̈ Insert the battery. Pay attention to the correct
polarity while inserting (see left illustration).
̈ Close the battery compartment ¸. The flap will
audibly snap shut.
Note:
– Make sure that the normal/bypass · sliding
switch is in the normal setting (see page 10).
– You can also use the headphones without
batteries. Switch the NoiseGard function off
before removing the battery (see ”Switching
NoiseGard on and off“ on page 11).
¸
º
– Remove the battery from battery compartment
¸, if you will not use the headphones for an
extended period.
If the battery capacity is almost depleted, the LED º
flashes. Replace the battery or rechargeable battery.
If the battery is completely empty, the NoiseGard 2.0
function independently switches off.
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Adjusting headband
In order to achieve good sound transmission and noise
damping, as well as the most comfort, adapt the
headband to your head size. You can adjust the
headband using the snap-in locking mechanism.
̈ Wear the headphones so that the headband ³ runs
across the middle of your head.
̈ Adjust the headphones so that
– the ear cushion µ completely surrounds the ears,
– you feel slight pressure around your ears,
– the headband ³ is flat on the head.
̈ Check in a loud environment whether the ear
cushions are optimally placed to ensure maximum
noise damping.
Connecting the headphones
̈ Connect the audio cable ¿ to the headphone
bushing of your sound source.
ꢀ
You will hear the sound from your sound source.
If the plug on the audio cable does not fit:
¹
̈ Use the adapter for 6.3-mm plug bushing ¹ (see
illustration to the left).
If you wish to use the headphones for the inflight
entertainment in an airplane:
¿
̈ Use the inflight adapter ꢀ (see illustration to the
left).
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Daily use
Adjusting the volume
Listening loud? - No!
CAUTION!
People like to listen more loudly with
headphones than with speakers. Loud
volumes for extended periods of time
can lead to permanent hearing loss.
Protect your hearing! Sennheiser head-
phones also sound very good at low
volumes.
̈ Use the VOLUME + button ¾ or the VOLUME –
button ², to adjust the volume.
¾
Note:
The volume of the TalkThrough signal does not
change.
²
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Operation without a battery
The PXC 450 can also be used like conventional
headphones without batteries. This is appropriate if
you do not have batteries, or if the battery is empty.
To listen without batteries:
̈ Fold the left headphone cup as inward as possible,
as indicated.
·
Sliding switch · is exposed.
A
̈ Push sliding switch · into the “bypass“ setting B.
Note:
B
– If the sliding switch · is in the B “bypass“ mode,
the TalkThrough and NoiseGard functions are
deactivated.
– To switch back to battery operation, return the
switch to the ”normal“ setting A.
10
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Switching NoiseGard on and off
The following prerequisites must be fulfilled for active
noise compensation, NoiseGard 2.0:
º
y a battery or rechargeable battery is inserted and
y the normal/bypass · sliding switch is in the
“normal“ position (see page 10).
To switch on NoiseGard 2.0:
̈ Press the ON/OFF button ´ approx. 1 second.
The LED º shines red.
´
To switch off NoiseGard 2.0:
̈ Press the ON/OFF button ´ approx. 1 second.
The LED º goes out. If NoiseGard is switched off,
you can use the PXC 450 like typical headphones to
listen to music.
Note:
– Compared to the other buttons of the controller,
the ON/OFF button ´ is set somewhat lower to
avoid accidental switching off.
– If the batteries of the device are empty, the
NoiseGard automatically switches off. However,
the audio signal continues to be transmitted if
you slide the normal/bypass sliding switch ·
into “bypass“ position (see page 10).
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Switching TalkThrough function on and off
The PXC 450 provides excellent damping of ambient
noises. However, to enable you to be able to
communicate with your environment unhindered
while wearing the headphones, the PXC 450 has a
TalkThrough function.
The following prerequisites must be fulfilled for the
TalkThrough function:
y a battery or rechargeable battery is inserted,
y NoiseGard is switched on and
y the normal/bypass · sliding switch is in the “nor-
mal“ position (see page 10).
To switch the TalkThrough function on/off:
̈ Briefly press the TalkThrough button ¶.
The LED display º lights green if the TalkThrough
function is switched on.
º
¶
Note:
You cannot adjust the volume of the TalkThrough
signal.
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Removing and connecting audio cable
To use the headphones strictly to dampen noise, you
can remove the audio cable (see illustration).
To remove the audio cable:
̈ Pull the plug of the audio cable ¿ out of
connection » in the direction of the arrow.
To reconnect the audio cable:
̈ Plug the plug of the audio cable ¿ into the
connection » in the direction of the arrow.
»
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Transporting headphones
To transport the headphones with minimal space
requirements, you can fold them in different ways:
To fold the headphones as flat as possible:
̈ Turn the ear cups 90°, as illustrated.
To transport the headphones as compactly as possible:
̈ Fold the ear cups inwards, as illustrated.
To transport the headphones with as much protection
as possible:
ꢀ
¹
̈ Turn the ear cups 90°.
̈ Pull out the right side of the headband, and then
fold inwards.
ꢁ
̈ Place the headphones flat into the soft case, as
illustrated.
The edge of the soft case has loops for storing up to
two micro batteries (AAA) ꢁ .
You can transport the accessories in the lid of the bag:
– ¹ Audio adapter (6.3-mm stereo plug)
– ꢀ Inflight adapter (2 x 3.5-mm mono plug)
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Accessories and replacement
parts
Parts no. Accessories/replacement part
517680 1 pair ear cushions incl. cover
517681 Connector cable
Care and maintenance
Fluids can destroy the electronics of the
device!
CAUTION!
Fluids can penetrate the housing of the
device and cause a short-circuit of the
electronics.
̈ Only clean the device with a slightly
damp cloth. Do not ever use solvent or
cleanser.
̈ Clean the headphones occasionally using a soft,
slightly damp cloth.
Replacing the ear cushions
You can replace the ear cushions. You can obtain
replacement ear cushions as accessories.
̈ Hold behind the ear cushions µ and pull these off
from the ear cups.
̈ Press the new ear cushions µ onto the ear cups
until they audible lock into place.
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Technical data
Converter principle
Coupling to the ear
Transmission range
dynamic, closed
circumaural
8 – 28,000 Hz
Rated impedance active/
passive
750/150 Ohm
108 dB SPL
Sound pressure levels at
1 kHz and 1 volt
Harmonic distortion at
1 kHz
0,1 %
Cable plug
3.5-mm stereo plug
2 x 3.5-mm mono plug
6.3-mm stereo plug
1.4 m
Inflight adapter
Audio adapter
Cable length
Weight without cable
and battery
275 g
Voltage battery/
rechargeable battery
(Micro/AAA)
1.2 – 1.5 V
Passive sound insulation
≤ 32 dB
Sound compensation
by NoiseGard
≤ 23 dB
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Manufacturer declaration
Warrantee
We provide a warrantee for the original Sennheiser product you
purchased for 24 months. The warrantee begins on the date of
purchase of the factory-new, unused products by the first end cus-
tomer. Please retain receipt as proof of purchase. Without this
proof, which the Sennheiser service partner will check, you will ge-
nerally need to pay for repairs performed. The sales receipt must in-
clude the date of purchase and the description of the product.
The guaranteed services consist of either free correction of material
or manufacturing faults by repair, exchange of parts or exchange of
the entire device, our choice. The parts removed within the scope of
a warrantee claim return to ownership of Sennheiser electronic
GmbH & Co. KG or their service partners.
Exceptions to the warrantee:
y
Minor faults or deviations in the condition of the product that
are inconsequential to the value or appropriate use
y
y
Accessories sent with the product
Rechargeable batteries and batteries (these products have a
shorter life due to their condition, which concretely depends on
the intensity of use on a case-by-case basis)
y
Defects due to improper use (e.g. operating error, mechanical
damage, incorrect operating voltage)
Proper use is the use of the product that is described in the ope-
rating instructions.
y
y
Defects from wear
Modifications made by you or third parties to Sennheiser pro-
ducts, if no prior written agreement was present from Sennhei-
ser regarding the type and scope of modification
y
y
Defects from acts of God
Defects known to you at the time of purchase
The warrantee claim is void if unauthorized persons or repair cen-
ters open the product.
The warrantee can be taken advantage of world-wide in all coun-
tries where the national law doesn't counter our warrantee determi-
nations. Other claims or those more extensive than listed here can-
not be validated from the warrantee.
However, as the end customer you may have additional legal claims
in your country that are not limited by these warrantee conditions;
the warrantee is based on the laws of the country in which you
17
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purchased the Sennheiser product as the end customer. The regula-
tions of the UN purchasing law have no relevance.
In cases of warrantee, send the device, including accessories and sa-
les receipt to the service partner responsible for you.
A current overview of all world-wide service partners for Sennheiser
ser.com .
The customer is responsible for the safe transport of the device. To
avoid transportation damages, the original packaging should be
used if possible.
EU Declaration of Conformity
This device complies with the basic requirements and additional
specifications of the 2004/108/EU guidelines. This declaration is
The following country-specific regulations must be noted before
use!
WEEE Statement
Your Sennheiser product was designed and manufactured using
high-quality materials and components, which may be recycled and
re-used. This symbol indicates that electric and electronic devices at
the end of their service life must be disposed of separately from
household waste.
Please dispose of this device at your local community collection
point or at a recycling center. Please help to preserve our environ-
ment.
Rechargeable batteries and batteries
The rechargeable batteries and batteries can be recycled. Please
dispose of the rechargeable batteries or batteries at a battery recy-
cling container or the dealer. Only dispose of empty rechargeable
batteries or batteries to protect the environment.
Sennheiser and NoiseGardTM are registered trademarks of Sennheiser electronic GmbH & Co. KG.
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Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
Phone +49 (5130) 600 0
Fax +49 (5130) 600 300
Printed in China
Publ. 08/07
517600/A02
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