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ADJUSTING THE BASS ATTENUATION
TREE LINE OF SIGHT
You can use the two supplied sealing tapes to seal the 'null hole* in the
headphone systems s'). 'Hie more holes you seal with the scaling tapes, the
greater is the l*a*» attenuation. ITii» increases the micllcgitnhiy without
increasing the volume - which is an advantage for persons with a slight
hearing impairment.
REPLACING THE EAR-CUSHIONS
'Hie ear-cushions can easily !>e removed from the headphones and cleaned
with warm soapy water io\ From time to time, however, the ear-cushioos
should l>c replaced for reasons of hygiene. Replacement car-cushions arc
available with different degrees of softness:
► Black ear-cushions, firmer version
Cat. no. 37080
► Transparent car-cushions, softer version
Cat. no 40949
Please order your car-cushions from your Sennheiser dealer.
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 have an excellent sound quality even at low volumes.
Infra-red light from the 'll 250
1
'11 500 transmitter is transmitted in the
same way as the light from a light bulb. I>o not obstruct the path of the light
between the transmitter and the receiver, and slay in the loom where the
transmission i» taking place! Make sure ilui you wear the stethoset receiver
die right way round, with the -Sennheiser" logo ui the from.
There is a simple rule. If you tan see the transmitter from where you arc.
transmission can take place without any interference.
ADJUSTMENT FOR HEARING IMPAIRMENT
Is your hearing capacity different for each cati* You can use the balance
control
to adjust your Kl 250 / RI 500 stethoset receiver to your
individual needs.
The balance control
is recessed and is adjusted with a small screwdriver.
This adjustment b only changed occasionally - and it is (test done by the
hearing aid dealer who sold you your SET 250 / SET 500.
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