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CURVES
ALPHA SERIES USER MANUAL V1.0
DATE: 14/01/00 18:27
Alpha M3
20
100
1k
10k
20k
-30.00
-20.00
-10.00
0.0
10.000
On Axis Response Alpha M3 With AlphaTD Controller (dB)
•
Figure 7: Frequency Response with Alpha TDcontroller (dB)
20
100
1k
10k
20k
2
10
50
Impedance Alpha M3 (Ohm)
•
Figure 8: Impedance (Ohms) Black: MF, Grey: HF
100
1k
10k
20k
1
10
100
0.0
5.0000
10.000
15.000
20.000
Directivity Index (dB) & Q Alpha M3
•
Figure 9: Directivity Index (dB) and Factor
100
1k
10k
20k
20
100
200
Coverage Angle Alpha M3 (Degree)
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Figure 10: Nominal Coverage @ –6 dB (Degrees)
100
1k
10k
20k
-30.00
-20.00
-10.00
0.0
10.000
Horizontal Off-Axis Response Alpha M3 (dB)
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Figure 11: Horizontal Off-Axis
Frequency Response @ 10, 20 & 30°
100
1k
10k
20k
-30.00
-20.00
-10.00
0.0
10.000
Vertical Off-Axis Response Alpha M3 (dB)
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Figure 12: Vertical Off-Axis
Frequency Response @ 10, 20 & 30°
Frequency Response Curves: Anechoic Far Field above 200 Hz, Half-space Anechoic below 200 Hz.
Impedance: Voltage to Current Ratio, Free Field measurement
Off-Axis Frequency Response: 1/3 octave smoothed frequency response, normalised to On-Axis response.
Directivity Curve, Coverage Angle and Polar Diagram from computer processing on off-axis response curves.
