7
25
dB
20
15
10
5
0
10 20 Hz 50 100 200 500 1 kHz 2 5 10 20 40 D A B C Lin.
5 dB
Diffuse
15 kHz
20 kHz
10 kHz
5 kHz
1 kHz
5 dB
Fig. 5. Diffuse-field response of Types 4003 and 4006 with Nose
Cones UA0777 fitted.
Fig. 6. Directional characteristics of Types 4003 and 4006 with
Near-field Grid DD0251 fitted.
6
25
dB
20
15
10
5
0
10 20 Hz 50 100 200 500 1 kHz 2 5 10 20 40D A B C Lin.
5 dB
Diffuse
On-axis
25
dB
20
15
10
5
0
10 20 Hz 50 100 200 500 1 kHz 2 5 10 20 40D A B C Lin.
5 dB
On-axis
Diffuse
Fig. 3. On-axis and diffuse-field responses of Types 4003 and 4006
with the Near-field Grid DD0251 fitted.
Fig. 4. On-axis and diffuse-field responses of Types 4003 and 4006
with the Diffuse-field Grid DD0297 fitted.
