Sennheiser 912 S manual Postioning the microphone

Postioning the microphone

Boundary microphones make use of the pressure effects at a room boundary and need to be mounted on a flat surface:

Position	Sound result	Comments
Altar or lectern:	Less room resonance	Unobtrusive due to
on a sound-reflecting	portions or comb filter	flat design; no micro-
surface	elements; improved	phones in the field of
	speech intelligibility	vision
	and greater gain
	reserves in contrast to
	freestanding micro-
	phones
Conference rooms:	Less room resonance	Microphones must
lying on the table;	in contrast to	not be covered by
directed towards the	freestanding	papers, folders or
conference	microphones	similar objects
participants *)

*) 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).

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