Sennheiser PXC 350 User Manual

Bedienungsanleitung

Instruction Manual

Notice d‘emploi

Istruzioni per l‘uso

Instrucciones de uso

Gebruiksaanwijzing

PXC 350

Contents

Safety instructions ...........................................................2

Delivery includes ...............................................................4

The PXC 350 headphones ...............................................4

Operating controls ............................................................6

Putting the PXC 350 into operation ..............................7

Inserting and replacing the batteries ............................. 7

Adjusting the headband ................................................... 8

Connecting the headphones ............................................. 8

Using the PXC 350 ............................................................9

Adjusting the volume ........................................................ 9

Switching NoiseGard Advance on/off ......................... 10

Detaching and connecting the audio cable ................ 11

Folding up the headphones ......................................... 12

Accessories and spare parts ........................................13

Care and maintenance ..................................................13

Replacing the earpads .................................................... 13

Specifications ..................................................................14

Manufacturer Declarations .......................................... 15

Thank you for choosing Sennheiser!
We have designed this product to give you reliable operation over

many years. Over 60 years of accumulated expertise in the design
and manufacture of high-quality electro-acoustic equipment have
made Sennheiser a world-leading company in this field. Please take
a few moments to read these instructions carefully, as we want you
to enjoy your new Sennheiser products quickly and to the fullest.

1

Safety instructions

y Please read these instructions carefully and

completely before using the headphones.

y Make these instructions easily accessible to all

users at all times. Always include these instructions
when passing the headphones on to third parties.

y Do not wear the headphones in situations which

require special attention (e.g. in traffic or when
performing skilled jobs).

y Always keep the headphones dry and do not

expose them to extreme temperatures (normal
operating temperatures: 10 °C to 35 °C).

y Use the headphones with care and store them in a

clean, dust-free environment.

y Switch off the headphones after use to conserve

battery power. Remove the batteries if the
headphones will not be used for extended periods
of time.

y Please protect your hearing from high volume

levels. Sennheiser headphones also sound
exceptionally good at low volumes.

Intended use of the headphones

Intended use includes:
y having read these instructions, especially the

chapter “Safety instructions”,

y using the headphones within the operating

conditions and limitations described in this
instruction manual

2

Improper use

“Improper use” means using the headphones other than as described in these
instructions, or under operating conditions which differ from those described herein.

Safety instructions for batteries/rechargeable batteries

If abused or misused, batteries/rechargeable batteries may leak and, in extreme
cases, may even present an explosion and fire hazard. Sennheiser does not accept
any liability for damage arising from abuse or misuse.

Keep batteries out of reach
and out of sight of
children.

Immediately remove flat batteries/
rechargeable batteries from the
device.

Do not heat or throw into
fire.

Do not short-circuit.

Do not solder.

Do not mutilate or
dismantle.

Do not pack charged
batteries loose – danger of
shorting out – fire hazard.
Do not get flat and fully
charged batteries/
rechargeable batteries
mixed up.

Do not attempt to
recharge non-rechargeable
batteries.

Observe correct polarity.

Switch off battery-powered/
rechargeable battery-powered devices
when not in use.

Remove batteries/rechargeable
batteries when the device is not used
for extended periods of time.

Only charge rechargeable batteries
with the appropriate Sennheiser
chargers.

After extended periods of non-use,
charge rechargeable batteries before
using them.

Only charge rechargeable batteries at
ambient temperatures between 10 °C
and 40 °C.

Dispose of exhausted batteries/
rechargeable batteries at special
collection points or return them to
your specialist dealer.

3

Delivery includes

Delivery of the PXC 350 headphones includes:

1 PXC 350 headphones

1 soft case

1 audio adapter (¼" (6.3 mm) stereo jack)

1 in-flight adapter (2 x 3.5 mm mono jack)

2 AAA size batteries

Instructions for use

The PXC 350 headphones

The PXC 350 are closed, dynamic, circumaural stereo
headphones with NoiseGard Advance active noise
compensation technology, designed for use with e.g.
in-flight entertainment systems. Passive and active
noise reduction enable you to enjoy music even in
noisy environments.

4

NoiseGard Advance

The NoiseGard Advance active noise compensation
system is based on the principle of cancelling out
sound using “anti-sound” (phase-inverted sound).
Tiny microphones pick up low-frequency ambient
noise (up to 1 kHz) near the ear. The NoiseGard
Advance electronics use this noise to generate a
sound wave which is the exact opposite (IE: at the
same level but polarity reversed – 180° out-of­phase), the effect being that the polarity reversed
signal cancels most of the outside noise.

Additional features

y Outstanding sound quality due to patented

adaptive baffle damping and Duofol diaphragms

y Optimum protection against ambient noise due to

NoiseGard Advance active noise compensation

y Great for travel: comfortable, rugged and foldable

headphone construction with single-sided cable

y Designed for use with in-flight entertainment

systems and audio, video and game consoles

y Without the detachable audio cable, the head-

phones can be used as passive hearing protectors

5

Operating controls









 Headband
 Slide switch for NoiseGard operation
 LED (red)
 Socket for audio cable
 Audio cable
 Earpads
 Volume control VOLUME (on audio cable)
 Battery compartment (on both sides)







쐋

6



Putting the PXC 350 into
operation

Inserting and replacing the batteries

For powering the NoiseGard Advance active noise
compensation, two AAA size batteries or rechargeable
batteries are required.

왘 Open the battery compartments  on the left and



right earcups.

왘 Remove the flat batteries.
왘 Insert the batteries as shown. Please observe

correct polarity when inserting the batteries.

왘 Close the battery compartments . The battery

compartment covers lock into place with an audible
click.

Notes:

– The headphones can also be used without

batteries. Switch NoiseGard Advance off before
removing the batteries (see “Switching NoiseGard
Advance on/off” on page 10).

– Always replace the two batteries (left and right)

at the same time.

– Remove the batteries if the headphones will not

be used for extended periods of time.

쐋

When the batteries are almost flat, the LED  flashes.
You then have to replace the batteries.

7





Adjusting the headband

For optimum transmission quality, good noise
attenuation and best possible comfort, the headband
has to be adjusted to properly fit your head:

왘 Wear the headphones so that the headband 

runs over the top of your head.

왘 Adjust the length of the headband so that

– your ears are completely inside the earpads ,
– you feel even, gentle pressure around your ears,
– a snug fit is ensured.

왘 Final adjustment is best made in a noisy environ-

ment!

Connecting the headphones







8

왘 Connect the audio cable  to the headphone

socket of your sound source.
You hear the sound from your sound source.

If the plug on the audio cable does not fit:

왘 Slip on the audio adapter for ¼" (6.3 mm) jack

socket  (see diagram on the left).

If you want to use the headphones with an in-flight
entertainment system:

왘 Slip on the in-flight adapter  (see diagram on the

left).

Using the PXC 350

Adjusting the volume



CAUTION!

왘 Turn the volume control VOLUME  to adjust the

volume.

Volume up? - No!

When people use headphones, they
tend to choose a higher volume than
with loudspeakers. Listening at high
volume levels for long periods can lead
to permanent hearing defects. Please
protect your hearing, Sennheiser head­phones also sound exceptionally good
at low volumes.

9

Switching NoiseGard Advance on/off

To switch NoiseGard Advance on:

왘 Set the slide switch  to position A as shown.

The LED  lights up red.

To switch NoiseGard Advance off:

왘 Set the slide switch  to position B.

The LED  goes off.

쐋

쐋



Note:

Switch NoiseGard off after use to conserve battery
power.

When the batteries are completely discharged, the

A

B

NoiseGard Advance active noise compensation
automatically switches off. Audio will still be heard
through the headphones when the slide switch is set
to position B.

Meanings of the LED :

LED Meaning

red

NoiseGard Advance is switched on

flashing Batteries/rechargeable batteries are

almost flat

10



Detaching and connecting the audio cable

The audio cable is detachable (see diagram on the
left). Without the cable, the headphones can be used
as passive hearing protectors.

To detach the audio cable:

왘 Pull the plug of the audio cable from the socket .

To connect the audio cable:

왘 Insert the plug of the audio cable into the socket .

11

Folding up the headphones

For space-saving transportation, the headphones can
be folded up in different ways:

To fold up the headphones as flat as possible:

왘 Rotate the earcups by 90° as shown.

To fold up the headphones as compact as possible:

왘 Tuck the earcups between the headband as shown.

12





For safe transportation of the headphones, use the



supplied soft case and fold the headphones as follows:

왘 Rotate the earcups by 90°.

왘 Pull out the right earcup and then fold it in.

왘 Place the headphones flat into the soft case as

shown.

The two AAA size batteries  can be inserted into the
two straps at the side of the soft case.

The accessories can be transported in the cover of the
soft case:

–  Audio adapter (¼" (6.3 mm) stereo jack)
–  In-flight adapter (2 x 3.5 mm mono jack)

Accessories and spare parts

Cat. No. Accessories/Spare parts

517680 1 pair of earpads incl. ear cap
517681 Audio cable

Care and maintenance

CAUTION!

왘 Use a soft, slightly damp cloth to clean the head-

phones from time to time.

Replacing the earpads

You can replace the earpads. Spare earpads are
available as accessories.

왘 Grasp the edge of the earpad  behind the earcup

and peel it up and away from the earcup.

왘 Press the new earpad  onto the earcup until it

locks into place with an audible click. Repeat for the
other earcup.

Liquids can damage the electronics of
the headphones!

Liquids entering the housing of the
headphones can cause a short-circuit and
damage the electronics.

왘 Only use a soft, slightly damp cloth to

clean the headphones. Do not use any
cleansing agents or solvents.

13

Specifications

Transducer principle dynamic, closed
Ear coupling circumaural
Frequency response 8 – 28,000 Hz
Nominal impedance

active/passive 750/150 Ohms
Sound pressure level at

1 kHz and 1 V 108 dB SPL
THD at 1 kHz 0.10 %
Cable connector 3.5 mm stereo jack
In-flight adapter 2 x 3.5 mm mono jack
Audio adapter ¼" (6.3 mm)

stereo jack
Cable length 1.4 m
Weight

w/o cable and batteries 245 g
Batteries/rechargeable

batteries (AAA) 2 x 1.2 – 1.5 V
Passive attenuation ≤ 32 dB
NoiseGard

active noise compensation≤ 18 dB

14

Manufacturer Declarations

Warranty

The original Sennheiser product you have purchased is covered by a
warranty of 24 months. The warranty period begins on the date of
purchase of brand new, unused products by the first end user.
Please retain your sales receipt (or your warranty certificate) as
proof of purchase. Unless you submit proof of purchase, which will
be verified by your local Sennheiser service partner, you will be
obliged to pay for any repairs that are carried out. Proof of purchase
must state the date of purchase and name of the product.

We shall satisfy our warranty obligations by remedying any
material or manufacturing faults free of charge at our discretion
either by repair or by exchanging individual parts or the entire
appliance. Any defective parts removed from a product during the
course of a warranty claim shall become the property of Sennheiser
electronic GmbH & Co. KG.

The following cases are not covered by the above warranty:

y minor faults or deviations in the quality of a product which do

not affect the product's value or fitness for its intended purpose

y any accessories supplied with the product
y rechargeable and disposable batteries (these products have a

shorter service life, the length of which also depends on the
frequency of use)

y faults resulting from improper use (e.g. operating errors,

mechanical damage, incorrect operating voltage)
Proper use for the purposes of this warranty is defined as use of
the product under the conditions stated in the instructions for
use.

y faults due to wear and tear
y any modification of Sennheiser products effected by you or a

third party, unless Sennheiser has given its prior written consent
to the nature and extent of the modification

y faults caused by force majeure
y faults of which the purchaser was already aware at the time of

purchase

All warranty claims become void if the product is tampered with by
unauthorised persons or repair shops.

Warranty claims can be enforced in any country throughout the
world in which the statutory rights of the country concerned are not
in conflict with our warranty regulations. No other warranty claims

15

or claims over and above the rights stated in these terms and
conditions will be accepted.

Consumers may be entitled to statutory rights in their own
countries which are not restricted by these warranty terms and
conditions, as the warranty is governed by the laws of the country
in which the Sennheiser product was purchased by the consumer.
The provisions of the UN Convention on the International Sale of
Goods do not apply to this service.

If you wish to file a claim under the warranty, please send the
product to your local service partner, together with accessories and
proof of purchase. The customer bears the risk of shipment. To
avoid any damage in transit, please use the original packaging if
possible.

An up-to-date list of all service partners of Sennheiser electronic
GmbH & Co.KG worldwide is available on the internet at
www.sennheiser.com.

The customer bears the risk and cost of shipment. To avoid any
damages in transit, please use the original packaging if possible.

CE Declaration of Conformity

This equipment is in compliance with the essential requirements
and other relevant provisions of Directive 89/336/EU. The
declaration is available on the internet site at www.sennheiser.com.

Before putting the device into operation, please observe the
respective country-specific regulations!

WEEE Declaration

Your Sennheiser product was developed and manufactured with
highquality materials and components which can be recycled and/
or reused. This symbol indicates that electrical and electronic
equipment must be disposed of separately from normal waste at
the end of its operational lifetime.

Please dispose of this product by taking it to your local collection
point or recycling centre for such equipment. This will help to
protect the environment in which we all live.

16

Batteries or rechargeable batteries

The supplied batteries or rechargeable batteries can be recycled.
Please dispose of them as special waste or return them to your
specialist dealer. In order to protect the environment, only dispose
of exhausted batteries.

Sennheiser and NoiseGard
Sennheiser electronic GmbH & Co. KG.

TM

are registered trademarks of

Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
Phone [phone]
Fax [phone]
www.sennheiser.com

Printed in China Publ. 06/07 515699/A01