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TECHNICAL SPECIFICATIONS
ALPHA SERIES USER MANUAL V1.0
DATE: 14/01/00 18:27
Directivity Tables
Off-Axis Attenuation from On-Axis Frequency Response (dB)
125 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
B1+M3 hor 0.0 0.5 1.3 2.0 2.5 3.5 4.3 4.5 5.0 4.8 6.0 6.0 6.5 6.8 6.3 7.0 6.3
5.8 5.5
B1+M3 vert 0.0 0.3 0.5 1.5 2.0 2.8 3.5 4.3 4.8 5.5 6.0 6.8 6.8 6.0 7.0 6.5 6.0
5.5 5.5
B1+M8 hor 0.0 0.5 1.3 2.0 2.5 3.5 4.3 4.5 5.0 4.8 6.0 6.0 6.5 6.8 6.3 7.0 6.3 5.8 5.5
B1+M8 vert 0.0 0.3 0.5 1.5 2.0 2.8 3.5 4.3 4.8 5.5 6.0 6.8 6.8 6.0 7.0 6.5 6.0 5.5 5.5
EM/EF hor 0.0 0.3 0.5 1.0 2.0 2.5 3.3 4.0 4.5 5.0 5.5 6.3 6.0 6.0 5.8 5.3 4.5 4.3 4.0
EM/EF vert 0.0 0.0 0.3 0.5 1.0 1.5 2.0 2.8 3.5 4.0 4.8 5.5 6.0 6.0 5.8 5.0 4.5 4.3 4.0
250 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
B1+M3 hor 0.0 0.3 1.0 2.0 3.0 4.3 5.5 6.8 8.0 8.5 9.5 9.8 9.8 10.0 9.5 8.8 8.0
7.5 7.5
B1+M3 vert 0.0 0.3 0.8 1.5 2.5 4.0 5.3 6.5 7.5 8.5 9.8 10.8 12.0 12.0 11.0 9.8 8.5
8.0 7.5
B1+M8 hor 0.0 0.3 0.8 2.0 3.0 4.3 6.0 7.0 8.0 8.8 9.3 10.0 10.5 10.3 10.0 9.3 8.0
7.5 7.8
B1+M8 vert 0.0 0.3 1.0 1.8 3.0 4.3 5.5 7.0 8.0 9.3 10.3 11.3 12.0 12.0 11.0 9.8 8.8
7.8 7.8
EM/EF hor 0.0 0.3 0.8 1.8 3.0 4.0 5.3 6.3 7.0 7.8 8.0 8.5 8.8 8.8 8.3 7.5 6.5 6.0 6.0
EM/EF vert 0.0 0.0 0.5 1.0 1.5 2.5 3.3 4.0 4.8 5.5 6.5 7.5 8.5 8.8 8.8 8.0 7.0 6.3 6.0
500 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
B1+M3 hor 0.0 0.5 2.0 4.5 7.3 9.8 12.0 14.0 15.8 16.8 17.8 18.8 19.0 18.8 18.5 18.0 17.0 15.0 14.5
B1+M3 vert 0.0 0.5 2.0 4.3 6.8 9.3 11.8 13.5 15.0 16.3 17.3 18.3 19.0 20.0 20.5 21.0 19.3 16.0 14.5
B1+M8 hor 0.0 0.5 2.0 4.3 6.5 9.0 12.0 14.0 16.3 17.8 18.5 19.0 19.3 19.5 19.5 19.5 17.5 15.5 15.8
B1+M8 vert 0.0 0.5 2.0 4.0 6.5 8.8 11.3 13.5 15.5 16.8 17.5 18.3 19.3 20.5 21.5 21.8 19.5 16.5 15.8
EM/EF hor 0.0 0.5 2.0 4.0 6.5 9.3 11.8 14.0 15.8 17.0 17.0 17.3 17.8 18.0 17.8 16.3 14.3 12.5 12.0
EM/EF vert 0.0 0.3 1.0 1.8 3.0 4.5 6.0 7.5 8.8 10.0 11.0 11.3 12.0 13.0 15.0 16.3 14.5 12.8 12.0
1000 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
B1+M3 hor 0.0 1.3 5.0 10.0 13.0 14.5 15.8 17.3 18.8 20.0 21.5 22.3 23.5 24.5 23.5 20.5 21.0 18.5 16.8
B1+M3 vert 0.0 1.8 6.0 10.8 12.3 13.0 14.3 15.5 17.3 18.5 19.5 20.5 21.5 22.0 22.8 23.5 26.3 20.5 16.8
B1+M8 hor 0.0 1.5 5.5 9.8 11.5 12.5 13.8 15.3 17.0 18.8 19.5 21.0 22.0 22.3 22.0 20.0 20.8 17.5 16.3
B1+M8 vert 0.0 1.8 6.5 11.0 11.5 12.0 13.3 15.0 16.5 17.8 18.5 20.0 21.0 21.3 21.8 21.5 20.5 19.5 16.3
EM/EF hor 0.0 2.0 6.3 9.8 9.5 9.5 10.3 11.3 12.5 13.5 14.3 15.3 16.5 17.5 18.8 17.3 18.8 19.0 17.0
EM/EF vert 0.0 0.8 2.5 5.0 8.0 10.8 13.0 15.3 17.5 19.3 20.3 21.0 21.5 22.0 23.0 23.0 21.3 19.0 17.0
2000 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
B1+M3 hor 0.0 1.3 6.0 14.0 14.5 16.0 18.3 19.8 21.5 23.3 25.5 27.5 28.5 30.0 30.0 29.8 27.8 27.3 28.0
B1+M3 vert 0.0 1.8 7.0 14.3 15.8 17.0 20.0 21.8 23.3 24.5 25.8 27.0 28.3 29.0 29.0 29.3 29.5 29.3 28.0
B1+M8 hor 0.0 1.5 5.8 10.5 11.5 11.3 13.5 16.5 20.5 24.0 25.5 28.0 27.3 27.5 27.5 28.5 27.0 28.5 28.0
B1+M8 vert 0.0 2.3 7.5 12.5 15.0 16.0 18.0 20.5 22.5 24.5 25.8 27.0 28.0 29.0 27.8 26.8 29.0 29.5 28.0
EM/EF hor 0.0 1.5 4.5 7.8 7.8 8.0 10.0 12.5 15.5 18.0 19.5 20.0 21.5 22.8 23.0 23.8 25.5 25.8 24.0
EM/EF vert 0.0 1.8 5.5 10.5 14.5 16.5 18.3 20.0 22.0 24.0 25.5 26.3 27.0 28.0 29.3 28.0 26.5 25.0 24.0
4000 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
M3 hor 0.0 2.0 6.5 11.3 16.0 19.5 22.5 25.5 28.8 31.8 34.5 37.3 38.3 39.8 40.5 40.3 40.5 38.0 37.8
M3 vert 0.0 2.3 6.8 12.3 16.5 19.0 22.5 25.5 29.5 32.0 34.5 36.8 38.3 39.3 39.3 40.0 39.5 38.8 37.8
M8 hor 0.0 1.0 3.8 6.8 11.3 14.3 18.0 21.0 25.0 28.8 31.0 33.0 34.3 35.0 36.0 37.0 38.0 39.5 38.0
M8 vert 0.0 2.0 5.8 11.0 15.5 20.0 23.3 27.0 30.0 33.0 34.8 36.5 37.3 38.0 39.0 40.0 41.0 40.5 38.0
EM/EF hor 0.0 1.5 3.8 5.5 6.8 9.3 12.3 16.0 19.8 23.8 26.5 28.3 29.3 30.0 31.0 33.8 33.0 33.5 32.3
EM/EF vert 0.0 2.8 7.8 12.8 16.3 19.3 21.8 24.0 26.0 28.3 30.0 31.0 32.5 33.8 34.5 35.0 34.8 34.0 32.3
8000 Hz
Angle / dB 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
M3 hor 0.0 1.5 7.0 13.3 18.5 22.3 25.0 29.5 34.8 39.0 42.8 45.3 45.5 47.8 48.8 47.0 48.0 46.3 47.3
M3 vert 0.0 1.8 7.0 13.5 18.8 21.5 25.0 28.5 33.8 38.0 40.5 42.5 44.5 45.5 46.3 47.3 48.0 49.0 47.3
M8 hor 0.0 0.3 2.0 6.3 11.8 15.0 19.0 22.5 28.0 31.8 40.5 43.0 44.0 45.0 46.0 47.0 48.0 49.0 47.5
M8 vert 0.0 1.8 5.8 11.3 16.5 20.8 24.3 29.0 32.0 35.0 42.0 44.0 45.0 46.0 47.0 48.0 49.0 47.0 47.5
EM/EF hor 0.0 0.8 3.0 6.0 8.0 11.5 14.5 18.5 24.3 30.0 33.8 36.3 37.0 39.3 40.5 41.8 41.8 42.5 42.0
EM/EF vert 0.0 3.3 9.5 15.5 20.0 23.3 24.5 26.5 30.8 34.3 36.0 38.0 38.8 39.8 40.0 41.5 41.5 40.8 42.0
NOTE: Those data are also available in electronic format. (EASE™ compatible) contact your
NEXO agent.
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