Sennheiser 912 S - Manual (Page 5)

3
Postioning the microphone
Boundary microphones make use of the pressure effects at a
room boundary and need to be mounted on a flat surface:
*) The cardioid pick-up pattern has an opening angle of approx.
130°. Try to position the microphone so that the sound source
(conference participant, speaker or instrument) is located in
this angle area (see polar diagram).
Position Sound result Comments
Altar or lectern:
on a sound-reflecting
surface Less room resonance
portions or comb filter
elements; improved
speech intelligibility
and greater gain
reserves in contrast to
freestanding micro-
phones Unobtrusive due to
flat design; no micro-
phones in the field of
vision
Conference rooms:
lying on the table;
directed towards the
conference
participants *) Less room resonance
in contrast to
freestanding
microphones Microphones must
not be covered by
papers, folders or
similar objects
e 912 S_516585_0207_Sp6.book Seite 3 Freitag, 28. September 2007 11:09 11