Cleaning - AKG HEARO 999 AUDIOSPHERE User Instructions

Repeat the comparison for each position of the EARS SELECTOR (10).
5. Make a list of the three or four ear matching curves where you perceived the smallest
change in sound compared to the unprocessed test signal, and which you felt sounded
the most natural.
6. Set the MODE selector (9) to "IVA-PHONES" and start the test signal "Acoustic Guitar
Solo".
7. Use the EARS selector (10) to compare the ear matching curves on your shortlist with one
another.
8. Make a list of those ear curves where the signal most closely approximated a "point
source" (a sound source of zero width). For this test, it makes no difference whether you
perceive the signal inside or outside your head.
9. The ear matching curve that provides the closest approximation to a point source is the
one most congruent with the transfer function of your ears. Your HEARO 999 AUDIO-
SPHERE is now optimally adjusted to your ears for natural spatial hearing over head-
phones.
We recommend to clean the surfaces of your HEARO 999 AUDIOSPHERE using a soft cloth
moistened with water.
4 Operating Notes

5 Cleaning

Choosing the Winner