BRUEL & KJAER 4188 - Page 204

Chapter 8 —
1
/
2
" Microphone Preamplifier Type 2669
Dynamic Range
Falcon™ Range of Microphone Products
Microphone Handbook
BE1380– 12
8
−
7
Fig.8.7 shows the distortion limited output for three different voltage supplies, in
each case when the preamplifier is loaded by the 3m cable normally supplied with
the preamplifier.
Fig.8.6 Upper limit of dynamic range (3% distortion) of pream-
plifier (with a ± 50V DC supply voltage) due to capaci-
tive loading as a function of frequency
Fig.8.7 Maximum output voltage as a function of supply volt-
age and frequency
1 k 10 k 200 k
10
100
1
100 k
Power ± 50 V (+ 100 V)
3 m Cable
+ 3 nF
+ 30 nF
+ 100 nF
V
RMS
940767e
Frequency (Hz)
200
30
1 k 10 k 200 k
10
100
1
100 k
V
RMS
940769e
Frequency (Hz)
± 60 V (120 V)
± 30 V (60 V)
± 14 V (28 V)
200