Sennheiser 604 User Manual

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Positioning the microphone
Drums
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. 135°; see polar diagram).
Position
Resulting sound
Commentary
More fundamental, 
little overtones
Position on the drum: 
3–5 cm above the 
drumskin, the 
fundamental to 
overtones ratio can be 
adjusted by changing the 
angle of the microphone. 
The most balanced 
results are obtained at 
an angle of 30–60°. 
Less fundamental, 
many overtones
Use of a second  604 
for picking up the 
bottom of the drumskin 
and the snares. NB: The 
lower microphone must 
be phase-reversed to 
avoid phase-cancellation 
effects due to the second 
microphone being on the 
other side of the 
drumskin.