Nexo Alpha System - Manual (Page 34)

α α α
P 34
USER MANUAL
VERSION :1.01
DATE : 06/10/10
5.6. A LPHA EM
Frequency Response with AlphaETD Controller (dB) Impedance (Ohms)
Directivity Index (dB) and Factor Nominal Coverage @–6 dB (Degrees)
Horizontal Off-Axis Frequency Response @ 10, 20 & 30° Vertical Off-Axis Frequency Response @ 10, 20 & 30°
5.7. A LPHA EF
Frequency Response with AlphaETD Controller (dB) Impedance (Ohms)
Black : LF, Grey : MF+HF
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.
30 100 1k 10k 20k
-30.00
-20.00
-10.00
0.0
10.000
On Axis Response Alpha EM With AlphaETD Controller (dB)
100 1k 10k 20k
1
10
100
0.0
5.0000
10.000
15.000
20.000
Directivity Index (dB) & Q Alpha EM
100 1k 10k 20k
20
100
200
Coverage Angle Alpha EM (Degree)
100 1k 10k 20k
-30.00
-20.00
-10.00
0.0
10.000
Horizontal Off-Axis Response Alpha EM (dB)
100 1k 10k 20k
-30.00
-20.00
-10.00
0.0
10.000
Vertical Off-Axis Response Alpha EM (dB)
20 100 1k 10k 20k
2
10
50
Impedance Alpha EM (Ohm)
30 100 1k 10k 20k
-30.00
-20.00
-10.00
0.0
10.000
On Axis Response Alpha EF With AlphaETD Controller (dB)
20 100 1k 10k 20k
2
10
50
Impedance Alpha EF (Ohm)