SE Audiotechnik IA 402D, Application Manual

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11 10
Additional frequency adjustment (EQ) for 3x L 35 at splay angles 0°, 2.5°, 5°, 7.5°, 10°
Figure 4. Additional frequency adjustment for splay angles: 3 x L 35 with 0°, 2.5°, 5°, 7. 5° and 10°.
Additional frequency adjustment (EQ) for 4x L 35 at splay angles 0°, 2.5°, 5°, 7.5°, 10°
Figure 5. Additional frequency adjustment for splay angles: 4 x L 35 with 0°, 2.5°, 5°, 7. 5° and 10°.
main
axis
main
axis
main
axis
5° splay
angle
7.5° splay
angle
10° splay
angle
2.5° splay
angle
main
axis
main
axis
Nom. vertical
co10°/-20°
Nom. vertical
co10°/-25°
Nom. vertical
co10°/-30°
No further EQ needed Add. EQ 1:
+1.5 dB, 14.5 kHz, Q 2
Add. EQ 1:
+3 dB, 14 kHz, Q 1.5
Add. EQ 1:
+6 dB, 13 kHz, Q 2
IA 402D IA 402D IA 402D IA 402D IA 402D
L 35 L 35 L 35
L 35 L 35
Add. EQ 1:
+8 dB, 12 kHz, Q 2
Nom. vertical
co10°/-15°
Nom. vertical
co/-10°
main
axis
main
axis
main
axis
5° splay
angle
7.5° splay
angle
10° splay
angle
2.5° splay
angle
main
axis
main
axis
Nom. vertical
co10°/-25°
Nom. vertical
co10°/-32.5°
Nom. vertical
co10°/-40°
No further EQ needed Add. EQ 1:
+3 dB, 13.7 kHz, Q 2.2
Add. EQ 1:
+6 dB, 11.7 kHz, Q 1.5
Add. EQ 1:
+7 dB, 8.7 kHz, Q 1.2
IA 402D IA 402D IA 402D IA 402D IA 402D
L 35 L 35
L 35 L 35 L 35
Add. EQ 1:
+8 dB, 8 kHz, Q 1
Nom. vertical
co10°/-17.5°
Nom. vertical
co/-10°
HF ADJUSTMENT FOR SPLAY ANGLES
In a line array, the splay angles between units can greatly influence the response of the system,
especially in the high frequencies. This is mainly due to the decoupling of the different sources:
the greater the splay angles, the more the HF level starts decreasing and from a lower frequency.
In some cases and depending on the application, this may or must be compensated. The graphs below
show the compensation EQs for two, three and four boxes splayed at the different angles available.
These recommended EQs should be applied additionally to the presets and configurations
given before for the different combinations of L 35/R and the subwoofers.
Additional frequency adjustment (EQ) for 2x L 35 at splay angles 0°, 2.5°, 5°, 7.5°, 10°
Figure 3. Additional frequency adjustment for splay angles: 2 x L 35 with 0°, 2.5°, 5°, 7. 5° and 10°.
main
axis
main
axis
main
axis
5° splay
angle
7.5° splay
angle
10° splay
angle
2.5° splay
angle
main
axis
main
axis
Nom. vertical
co/-10°
Nom. vertical
co10°/-12.5°
Nom. vertical
co10°/-15°
Nom. vertical
co10°/-17.5°
Nom. vertical
co10°/-20°
No further EQ needed No further EQ needed No further EQ needed Add. EQ 1:
+2 dB, 15 kHz, Q 2
IA 402D IA 402D IA 402D IA 402D IA 402D
L 35
L 35
L 35 L 35 L 35
Add. EQ 1:
+4 dB, 15 kHz, Q 2