912 S
Bedienungsanleitung
Instructions for use
Notice d`emploi
Istruzoni per l`uso
Instrucciones de uso
Gebruiksaanwijzing
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912 S
The boundary microphone
912 S is a high-quality, pre-
polarized condenser microphone with half-cardioid pick-up
pattern, designed for picking up speech.
Due to its unobtrusive, flat design, it is ideally suited for use on
conference tables, altars and lecterns.
The microphone can be switched on and off via an integrated
membrane switch.
An internal DIP switch bank provides the following operating
modes:
On/off (factory preset)
Push-to-talk button (PTT)
Push-to-mute button (PTM)
Permanently switched on
The frequency response curve can be changed via a second DIP
switch bank:
Low cut
Low and high boost (factory preset)
Low boost
linear (= frequency response curve of the
912)
The
912 S is available in three different finishes:
912 S BK (black)
Cat. No. 500875
912 S WH (white)
Cat. No. 500876
912 S NX (Nextel non-reflecting gray)
Cat. No. 502193
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Features
Programmable membrane switch
Programmable frequency response curve
Very unobtrusive due to flat design
Extremely rugged sound inlet basket
Rubber damping plate on base to minimize structure-born
noise
Mounting slots for mounting the microphone to table tops,
lecterns, etc.
Gold-plated XLR connector
Integrated electronics (instead of in-line preamp)
Delivery includes
912 S boundary microphone
Pouch
Instructions for use
Warranty Certificate
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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
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