Sennheiser 500643 Headphones User Manual


 
11
Switching NoiseGard on and off
The following prerequisites must be fulfilled for active
noise compensation, NoiseGard 2.0:
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).
º
´
PXC450_517600_0806_SP6.book Seite 11 Donnerstag, 13. September 2007 10:26 10