PAGE
28/37
CURVES
ALPHA SERIES USER MANUAL V1.0
DATE: 14/01/00 18:27
Alpha M8
20
100
1k
10k
20k
-30.00
-20.00
-10.00
0.0
10.000
On Axis Response Alpha M8 With AlphaTD Controller (dB)
•
Figure 13: Frequency Response with Alpha TDcontroller (dB)
20
100
1k
10k
20k
2
10
50
Impedance Alpha M8 (Ohm)
•
Figure 14: 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 M8
•
Figure 15: Directivity Index (dB) and Factor
100
1k
10k
20k
20
100
200
Coverage Angle Alpha M8 (Degree)
•
Figure 16: Nominal Coverage @–6 dB (Degrees)
100
1k
10k
20k
-30.00
-20.00
-10.00
0.0
10.000
Horizontal Off-Axis Response Alpha M8 (dB)
•
Figure 17: 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 M8 (dB)
•
Figure 18: 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.
