Using The Hda 300 - Sennheiser HDA 300 Instruction Manual

Using the HDA 300

Using the HDA 300
WARNING
Danger of hearing damage due to high volumes!
Listening at high volume levels for long periods of time can
lead to permanent hearing defects.
High volume levels can lead to cross-hearing (high sound pres-
sures are transmitted unintentionally from one ear to the other
ear) and falsify the measurement results.
▷
Before putting the headphones on and before toggling
between audio sources, adjust the volume to a low level.
▷
Do not continuously expose yourself or the test person to
high volume levels.
▷
Use narrow-band masking noise to avoid cross-hearing.
1. Pull new HZH 350 hygienic pads over the right and the left ear pad to
ensure hygiene when using the HDA 300 on the test person.
2. Take off glasses, earrings and similar objects which could interfere with
the proper fit of the headphones. Put the headphones on the test person
so that the red ear cup
covers the left ear.
3. Adjust the ear cups and the headband of the headphones so that
– the ears are completely covered by the ear pads,
– the test person feels even, gentle pressure around the ears,
– a snug fit of the headband on the head is ensured.
1
* Right ear cup R, red
If the headband cannot be adjusted smaller to fit the head (see
page 11), use the XL headband paddings for small head sizes (avail-
able as accessories).
8 | HDA 300
R covers the right ear and the blue ear cup
2
R
*
3
L