Acoustic Performance Partnership
Eastern Acoustic Works
JF50 Page 3
One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
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Performance Data JF50
FREQUENCY RESPONSE
INPUT IMPEDANCE
Q & DIRECTIVITY INDEX (DI)
BEAMWIDTH
Freq
Hor Q
Ver Q
Tot Q
Hor Beamwidth Ver Beamwidth
100
1.2
1.3
1.2
360
360
125
1.1
1.2
1.1
360
360
160
1.4
1.7
1.6
360
360
200
1
1.1
1.1
360
360
250
1.5
1.8
1.7
360
360
315
1.7
1.6
1.6
360
360
400
2.1
2.3
2.2
360
360
500
2.1
2.9
2.4
360
249
630
2.5
3.3
2.8
190
360
800
2.6
4.8
3.4
196
110
1000
3.2
6.5
4.3
185
92
1250
4.5
7.7
5.6
121
83
1600
5.2
11.9
6.7
117
62
2000
6.4
11
6.9
99
37
2500
5.3
4.4
3.9
114
118
3150
3.6
3.1
2.7
140
132
4000
3.2
2.2
2.5
127
151
5000
3.9
3.5
3.6
125
131
6300
9.3
9.9
9.2
85
68
8000
9.5
9
9.5
80
85
10000
10.1
10.7
10.5
78
79
12500
21.2
20.2
20.7
50
51
16000
29
32.4
30.6
38
38
20000
18.4
18.5
18.0
45
45
Q & BEAMWIDTH BY FREQUENCY
60
80
100
120
100
1000
10000
20000
dB SPL
Frequency (Hz)
JF50 Axial Response
K
B
1
10
100
0
2
4
6
8
10
12
14
16
18
20
200
1000
10000
Q
Directivity Index
Frequency (Hz)
Horizontal Q and Directivity (1/3 Octave)
Vertical Q and Directivity (1/3 Octave)
Total Q and Directivity (1/3 Octave)
JF50 Q and Directivity
K
B
0
30
60
90
120
150
180
210
240
270
300
330
360
200
1000
10000
Degrees
Frequency (Hz)
Horizontal Beamwidth (1/3 Octave)
Vertical Beamwidth (1/3 Octave)
JF50 Beamwidth vs Frequency
K
B
0
5
10
15
20
20
100
1000
10000
20000
Ohms
Frequency (Hz)
JF50 Full Range Input Impedance (Magnitude)
K
B
