PRODUCT INFORMATION MMX 300
Thank you for selecting the MMX 300 headset. Please take some time to read carefully
through this product information before using the headset.
Safety Information
When you connect your headset, please make sure that the volume control is set at
minimum and is adjusted after it has been put on. It is a common phenomenon to listen to
music through headphones at high levels.
The very low levels of distortion present within the headphone can make the listening levels
higher than is perceived and we would like to warn you of this so that you are able to enjoy
the sound from this headphone for many years without damaging your ears.
Warning
Please make sure that you do not connect the microphone to microphone inputs supplying
phantom power (12 - 48 V), as this will damage the microphone.
Applications
The MMX 300 is ideal for all gaming and multimedia applications as well as for use with hi-fi
systems or mobile devices (CD/DVD/MP3). The noise-cancelling microphone ensures a clear
and precise voice transmission even in noisy surroundings. The closed design guarantees
absolute undisturbed enjoyment of game and sound combined with a high comfort due to
soft, replaceable ear and headband pads. The microphone can be muted and the volume
can easily be controlled via the supplied USB converter.
Connection
The MMX 300 provides two mini jack plugs (3.5 mm). You can directly connect the micro-
phone and headphone cables to the appropriate sockets of your PC or to an external sound
card. By using the screw-on 1/4" adapter the headphone can also be connected to devices
with a 1/4" jack socket.
Headphone
Setting up and Use of the Headset
Put the headset on your head. The microphone is on the left side. Position the microphone
to the front of the middle of the mouth. In order to avoid pop noise you should use the
microphone with a pop shield.
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Microphone
Headband
For best comfort and noise attenuation, the headband can be adjusted to fit your head
properly.
Wear the headset so that the headband runs over the top of your head and adjust the
headband so that
• your ears are completely enclosed by the ear cushions,
• you feel a gentle pressure around your ears,
• both ends of the headband have the same length to ensure a proper fit
Microphone
• Turn the microphone holder (not the
• The pop shield should enclose the microphone completely.
• Bend the flexible gooseneck so that the microphone is placed about 2 cm in front of the
middle of your mouth.
Important: In order to avoid overstretching and premature wear and tear never bend
the gooseneck more than 90°.
Maintenance
• As with any equipment which will be used in close proximity to sensitive areas of the body,
it is essential that the ear pads and headband are kept clean. Use a damp cloth for cleaning
using warm water only taking care not to allow any water drops into the transducers.
• For cleaning the pop shield remove it from the microphone and wash it under clear
running water. If necessary you can use a mild cleansing agent (e.g. washing-up liquid).
Make sure that the pop shield is completely dry before you replace it onto the microphone.
How to replace the Ear Pads
• Should it become necessary, replace the ear pads.
• Pull the ear pads up and remove them from the
earcups. Attach the new ear pads to the earcups.
• If other components have to be replaced, please
contact your beyerdynamic dealer.
gooseneck!) to position the microphone as
requested.
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