Sennheiser Headphones PXC 450 User Manual

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  
5
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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.  
7
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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
9
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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).  
11  
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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.  
12  
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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.  
»
13  
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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)  
14  
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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  
16  
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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.  
18  
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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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