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1 0
dB
0
0˚
30˚
180˚
-1 0
60˚
-20
20 Hz
50
On-Axis Frequency Response
Measured at 20 cm (7 . 9 in) distance
1 0
10 cm
15 cm
dB
0
20 cm
30 cm
-1 0
100 cm
-20
20 Hz
50
The Proximity Effect
The proximity effect exhibited by DPA 4099
serVICe & rePaIr
Products from DPA Microphones are extremely stable and there should not
be any significant change in the specifications with time and use . If, how-
ever, you are not satisfied with the characteristics exhibited by your product,
contact your nearest DPA Microphones representative for further details of
service and the repair facilities that are available .
22
90˚
100
200
100
200
500
1 kHz
2
500
1 kHz
2
5
10
20
5
10
20
40
40
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