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3
Sensitivity and bass filter
The e 914 is equipped with a three-position sensitivity switch (
3
) and
a bass filter switch (
4
).
Adjusting the sensitivity (
3
)
The microphone sensitvity can remain unchanged (0) or be reduced
by 10 dB or 20 dB. The latter is recommended when there is a risk that
the microphone or subsequent microphone input is overmodulated,
e.g. due to high sound pressure levels from drums, brass instruments,
etc.
Note:
We recommend that you mute the corresponding microphone channel
on the mixing console before connecting and disconnecting the micro-
phone cable, switching on and off the phantom powering or setting
the switches (see figure above).
Adjusting the bass filter (
4
)
The e 914 has been designed for an extended low-frequency bass
response. With certain live or close instrument miking applications, an
over-emphasis of the low frequencies can occur. This can be compen-
sated for by the 6 dB/octave roll-off filter. The cut-off filter reduces
low-frequency wind noise by 18 dB/octave.
Using the microphone
Positioning the microphone
B
Percussion
Pos.
Commentary
B.
1
Position the microphone a few centimetres above the
outer edge of the hi-hat aiming down. If necessary, remove
unwanted low-frequency signal portions by high pass
filtering.
Attention: When closing the hi-hat, a strong air current is
created on the edge. If the microphone is positioned too close
to the edge, interfering noise due to the air current can occur.
B.
2
Good starting position for live miking applications. If the
overhead microphones are only used for picking up the
cymbals, unwanted signal portions can be attenuated by high
pass filtering
In order to prevent interference due to crosstalk between adjacent
sound sources, try to position the microphone so that the interfering
sound source is located in the angle area of the highest cancellation of
the microphone (approx. 180°, see polar diagram).
