Instruction manual
MM 450
Travel
Give your Phone the Sound it Deserves
1
Contents
Contents
Important safety instructions .......................................................... 2
MM 450 ................................................................................................ 4
Delivery includes ................................................................................. 5
Product overview ................................................................................ 7
Putting the MM 450 into operation ................................................. 8
Charging the battery pack ................................................................. 8
Adjusting the headband ................................................................. 10
Switching the MM 450 on/off ........................................................ 11
Connecting the MM 450 to the audio source .............................. 12
Connecting the MM 450 using the audio cable .......................... 15
Using the MM 450 ............................................................................ 16
Adjusting the MM 450 to the listening situation ....................... 16
Changing the volume ....................................................................... 17
Remote-controlling connected devices from the MM 450 ....... 18
Resetting the settings of the MM 450 ......................................... 20
Transporting the MM 450 ................................................................ 21
Cleaning and maintaining the MM 450 ......................................... 22
If a problem occurs ... ....................................................................... 23
Accessories and spare parts ............................................................ 24
Specifications .................................................................................... 25
Manufacturer Declarations .............................................................. 26
Important safety instructions
2
Important safety instructions
·
Please read these instructions carefully and completely before using
the headset.
·
Make these instructions easily accessible to all users at all times.
Always include these instructions when passing the headset on to third
parties.
·
Only use the headset in aircraft where wireless Bluetooth®
transmission is permitted.
·
Do not use the headset in situations which require special attention
(e.g. in traffic or when performing skilled jobs).
·
Always keep the headset dry and do not expose it to extreme
temperatures (normal operating temperatures: 10°C/50°F to 35°C/
95°F).
Use the headset with care and store it in a clean, dust-free
environment.
Switch off the headset after use to conserve battery power. Remove
the batteries if the headset will not be used for extended periods of
time.
·
The headset contains magnets that generate a magnetic field which
could cause dangerous interference with cardiac pacemakers and
implanted defibrillators. Keep the headset at least 1.2" (3 cm) from
cardiac pacemakers or implanted defibrillators.
·
Please protect your hearing from high volume levels. Sennheiser
headsets also sound exceptionally good at low volumes.
·
Only use the supplied mains unit and charging cable.
·
To reduce the risk of fire or electric shock, do not use the device and the
mains unit near water and do not expose them to rain or moisture.
·
Unplug the mains unit from the wall socket
to completely disconnect the device from the mains
during lightning storms or
when unused for long periods of time.
·
Only operate the mains unit from the type of power source specified in
the chapter "Specifications" (see page 25).
·
Ensure that the mains unit is
in a safe operating condition and easily accessible,
properly plugged into the wall socket,
only operated within the permissible temperature range,
not covered or exposed to direct sunlight for longer periods of time
in order to prevent heat accumulation (see "Specifications" on
page 25).
·
Do not operate the device and the mains unit near any heat sources.
·
Only use attachments/accessories specified by Sennheiser.
3
Important safety instructions
Intended use
Intended use of the headset includes
·
having read this instruction manual, especially the chapter "Important
safety instructions" on page 2,
·
using the headset within the operating conditions and limitations
described in this instruction manual.
"Improper use" means using the headset other than as described in this
instruction manual, or under operating conditions which differ from those
described herein.
Safety instructions for the Lithium-Polymer battery pack
If abused or misused, the battery pack may leak. In extreme cases, it may
even present
Please understand that Sennheiser does not accept liability for damage
arising from abuse or misuse.
·
a heat hazard,
·a fire hazard,
·
an explosion hazard,
·
a smoke or gas hazard.
Keep away from children.
Do not pack charged batteries
loose danger of shorting
out/fire hazard.
Observe correct polarity.
Do not short-circuit.
Dispose of the battery pack
at special collection points or
return it to your specialist
dealer.
Switch battery pack-powered
devices off after use.
Only charge the battery
pack with the appropriate
Sennheiser chargers.
When not using the battery
pack for extended periods of
time, charge it regularly
(about every 3 months).
Only charge the battery pack
at ambient temperatures
between 10°C/50°F and
40°C/104°F.
Do not heat above 70°C/
158°F, e.g. do not expose to
sunlight or throw into a fire.
Do not mutilate or dismantle.
Do not continue to use a
defective battery pack.
Immediately remove the
battery pack from an
obviously defective device.
When not using the device
for extended periods of time,
remove the battery pack from
the device.
Only use the original
Sennheiser battery pack.
Do not expose to moisture.
MM 450
4
MM 450
The MM 450 is an accessory which allows for wireless music enjoyment
when used with mobile phones or other Bluetooth devices/Bluetooth
compliant devices. Its supra-aural, closed design and the latest active
noise compensation technology (NoiseGard) make the MM 450 especially
suitable for use with in-flight entertainment systems. Due to its active and
passive attenuation of ambient noise, it lets you enjoy music even in noisy
environments.
Bluetooth
The MM 450 complies with the new Bluetooth 2.1 standard. Via its
Bluetooth interface, it can be connected to a wide variety of Bluetooth
enabled devices. Bluetooth wireless technology allows the MM 450 to
communicate with your Bluetooth enabled device (e.g. mobile phone, MP3
player, PC or PDA) within a range of up to 10 meters.
NoiseGardTM
The NoiseGard 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 electronics use this noise to generate a sound wave
which is the exact opposite (IE: at the same level but polarity reversed
180° out-of-phase), the effect being that the polarity reversed signal
cancels most of the outside noise.
TalkThrough
The MM 450 headset has a TalkThrough function, which allows you to
communicate with other people without having to remove the headset.
When TalkThrough is activated, professional quality microphones
mounted on the outside of the headset pick up all acoustic signals in the
immediate vicinity. Annoying background noise is electronically filtered
out, only allowing the voice of the other person to pass through the
headset clearly.
Additional features
·
Great
for
travel:
comfortable,
rugged
and
foldable
headset
construction
·
Optional connection via audio cable for music enjoyment without
Bluetooth technology
·
Outstanding sound quality due to patented adaptive baffle damping
and Duofol diaphragms
·
Optimum protection against ambient noise due to active and passive
noise attenuation