JF50 APP V3

User Manual: JF50

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ACO
ACOUUS STIC
TIC

ERSHPIP
RTNERSHI
RTN

ORMAN
PERFRFORMACNECPEA P
A
AL AL PE

JF50 Technical Specifications

APPLICATIONS
The JF50's extremely small size, smooth frequency response, broad, even
coverage pattern and surprisingly high output capabilities make it a
natural candidate for applications where aesthetic requirements or space
allowances make it almost impossible to locate a loudspeaker, but high
quality sound is nonetheless a high priority.
•
•
•
•
•

Trade Show Exhibits
• Hotels
Houses of Worship
• Boardrooms
High-Output Distributed Systems` • Theme Parks
Underbalcony and Delay Fills
• Stage Lip Systems
High Quality Background/Foreground Music Systems

SPECIFICATIONS
Frequency Response
±3 db
100 Hz to 18 kHz
-10 dB 67 Hz
Axial Sensitivity
SPL 1w @ 1m 94 dB
Impedance
Nominal 16Ω
Power Handling
AES
300 Watts
100 Hour Sine Wave 120 Watts
Maximum Output
Long Term
112 dB SPL
Peak 119 dB SPL
Nominal Coverage Angles (-6 dB)
Horizontal
120 degrees
Vertical 80 degrees
Additional Descriptive Data
LF Subsystem 2 x 5.25" Vented
HF Subsystem 1 x 1" soft dome
Powering Mode Passive
Finish Black Catalyzed
Polyurethane Coating
Connectors
Neutrik NL4 SpeakOn® Connector
and 2-pin Barrier Strip
Grill
Vinyl Coated Perforated Steel
Dimensions & Weights
Height 16.5 in (419 mm)
Width 6.25 in (159 mm)
Depth
6.0 in
(152 mm)
Back Width 4.22 in (107 mm)
Net Weight 15.5 lbs. (7.0 kg)
Shipping Weight 17.5 lbs. (7.9 kg)

OTHER RELEVANT DOCUMENTS
•
•
•
•
•

Group J Hardware Technical Specifications
Group J Price Lists
APP Testing Procedures*
Water Proofing Technical Specifications
Structural/Mechanical Technical Specifications*

ARCHITECTURAL SPECS
The two-way full range loudspeaker system shall incorporate two 5.25inch cone low frequency transducers and one 25mm soft-dome high
frequency transducer. The total system shall meet the following performance criteria: Frequency Response of 100 - 18k Hz ±3 dB; Axial Sensitivity (1 W @ 1 m) of 94 dB SPL (LF); 100 hour sine wave Power Handling of 120 Watts , AES method Power Handling of 300 Watts; Horizontal coverage of 120 degrees between 6dB down points; Vertical
coverage of 80 degrees between 6dB down points.
The system’s two low frequency drivers shall be loaded into a single
vented enclosure that provides optimally controlled acoustic diaphragm
loading. An internal passive frequency dividing network shall provide a
fourth order acoustic crossover between the low and high frequency
subsystems and shall incorporate system equalization. The crossover
shall be designed so that maximally flat frequency response is obtained.
The enclosure shall be trapezoidal and constructed of void-free crossgrain-laminated birch plywood with internal bracing. It shall be finished
in a black catalyzed polyurethane coating. The front of the system shall
be covered with a protective perforated steel grill assembly coated with
vinyl to dampen resonance. Mounting hardware attachment points shall
be located on the top and bottom of the enclosure. Attachment points
for Omnimounttm brand 75 series mounting hardware shall be located
on the rear of the enclosure.
The two-way full range loudspeaker system shall be the EAW model
JF50.

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 1

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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Drawings JF50
INPUT PLATE

DIMENSIONAL DRAWING

JF50

MOUNTING POINTS 3/18"-16 T-NUTS WELDED TO ALUMINUM PLATE
MOUNTING POINTS 1/4"-20 T-NUTS FOR OMNIMOUNT SERIES 75
ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED

6.25

4.22

6.14

1.11

1.63

EASTERN ACOUSTIC WORKS

JF-50
4.25
2.00

SOUND REINFORCEMENT
SYSTEM
NO.
MADE IN USA

16.50

7.00
1.05

--

+

INPUT

2.13

FRONT

SIDE

2.11

6.25

BACK

2.00

PIN 1 -- ... -PIN 1+ ... +

NEUTRIK

3.07
5.75

6.14
R 12.72

5.84
10°
NL 4 MPR

TOP/BOTTOM

Acoustic Performance Partnership

TOP/BOTTOM

Eastern Acoustic Works

JF50 Page 2

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Performance Data JF50

FREQUENCY RESPONSE

INPUT IMPEDANCE
JF50 Full Range Input Impedance (Magnitude)

JF50 Axial Response
120

20

15

Ohms

dB SPL

100
10

80
5

B

B

K

K

0

60
100

1000

10000

20000

20

100

1000

Q & DIRECTIVITY INDEX (DI)
20
Horizontal Q and Directivity (1/3 Octave)
Vertical Q and Directivity (1/3 Octave)

16

Total Q and Directivity (1/3 Octave)

14

10
8
6

B

K

4
2

1
200

0
10000

1000

Frequency (Hz)

BEAMWIDTH
JF50 Beamwidth vs Frequency
360
330

Horizontal Beamwidth (1/3 Octave)

300

Vertical Beamwidth (1/3 Octave)

270
240

Degrees

Q

12

Directivity Index

18

10

20000

Q & BEAMWIDTH BY FREQUENCY

JF50 Q and Directivity
100

10000

Frequency (Hz)

Frequency (Hz)

210
180
150

Freq
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000
5000
6300
8000
10000
12500
16000
20000

Hor Q
1.2
1.1
1.4
1
1.5
1.7
2.1
2.1
2.5
2.6
3.2
4.5
5.2
6.4
5.3
3.6
3.2
3.9
9.3
9.5
10.1
21.2
29
18.4

Ver Q
1.3
1.2
1.7
1.1
1.8
1.6
2.3
2.9
3.3
4.8
6.5
7.7
11.9
11
4.4
3.1
2.2
3.5
9.9
9
10.7
20.2
32.4
18.5

Tot Q
1.2
1.1
1.6
1.1
1.7
1.6
2.2
2.4
2.8
3.4
4.3
5.6
6.7
6.9
3.9
2.7
2.5
3.6
9.2
9.5
10.5
20.7
30.6
18.0

Hor Beamwidth Ver Beamwidth
360
360
360
360
360
360
360
360
360
360
360
360
360
360
360
249
190
360
196
110
185
92
121
83
117
62
99
37
114
118
140
132
127
151
125
131
85
68
80
85
78
79
50
51
38
38
45
45

120
90
60
30

B

0
200

K
1000

10000

Frequency (Hz)

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

Performance Data JF50

HORIZONTAL OFF-AXIS RESPONSE

VERTICAL OFF-AXIS RESPONSE

On-axis response normalized to 0 dB.

0

-10

Horizontal +10 degrees
B

K

-20
200

Horizontal -10 degrees
1000

JF50 Vertical ±10°

10

Attenuation in dB

Attenuation in dB

On-axis response normalized to 0 dB.

JF50 Horizontal ±10°

10

0

-10

Vertical +10 degrees
B

K

-20
200

10000

Attenuation in dB

Attenuation in dB

Horizontal +20 degrees
B

K

-20
200

Horizontal -20 degrees
1000

JF50 Vertical ±20°

10

0

-10

0

-10

Vertical +20 degrees
B

K

-20
200

10000

Attenuation in dB

Attenuation in dB

Horizontal +30 degrees
K

-20
200

Horizontal -30 degrees
1000

JF50 Vertical ±30°

10

0

B

0

-10

Vertical +30 degrees
B

K

-20
200

10000

Attenuation in dB

Horizontal +40 degrees

-20
200

K

Horizontal -40 degrees
1000

JF50 Vertical ±40°

10

0

B

10000

0

-10

Vertical +40 degrees
B

-20
200

Frequency (Hz)

Acoustic Performance Partnership

10000

Frequency (Hz)

JF50 Horizontal ±40°

-10

Vertical -30 degrees
1000

Frequency (Hz)

10

10000

Frequency (Hz)

JF50 Horizontal ±30°

-10

Vertical -20 degrees
1000

Frequency (Hz)
10

10000

Frequency (Hz)

JF50 Horizontal ±20°

10

Vertical -10 degrees
1000

Frequency (Hz)

Attenuation in dB

ACOUS
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ORMANCE
PA
PERF
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K

Vertical -40 degrees
1000

10000

Frequency (Hz)

Eastern Acoustic Works

JF50 Page 4

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Horizontal 1/3 Octave Polar Data JF50
0°
330°

0°

100

30°

330°

1600

30°

125
300°

270°

300°

2500

200

3150
270°

120°

90°

240°
B

K
210°

60°

160

90°

240°
B

2000

60°

120°
K

150°

210°

180°
0°
330°

150°
180°
0°

250

30°

330°

4000

30°

315
300°

60°

270°

B

6300

500

8000
270°

120°

90°

240°
B

K
210°

60°

400

90°

240°

5000
300°

120°
K

150°

210°

180°
0°
330°

150°
180°
0°

630

30°

330°

10000

30°

800
300°

60°

270°

90°

240°
B

12500
300°

120°

1000

16000

1250

20000
270°

210°

150°

120°
K
210°

180°

Acoustic Performance Partnership

90°

240°
B

K

60°

150°
180°

Eastern Acoustic Works

JF50 Page 5

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Vertical 1/3 Octave Polar Data JF50
0°
330°

0°

100

30°

330°

1600

30°

125
300°

270°

300°

2500

200

3150
270°

120°

90°

240°
B

K
210°

60°

160

90°

240°
B

2000

60°

120°
K

150°

210°

180°
0°
330°

150°
180°
0°

250

30°

330°

4000

30°

315
300°

60°

270°

B

6300

500

8000
270°

120°

90°

240°
B

K
210°

60°

400

90°

240°

5000
300°

120°
K

150°

210°

180°
0°
330°

150°
180°
0°

630

30°

330°

10000

30°

800
300°

60°

270°

90°

240°
B

12500
300°

120°

1000

16000

1250

20000
270°

210°

150°

120°
K
210°

180°

Acoustic Performance Partnership

90°

240°
B

K

60°

150°
180°

Eastern Acoustic Works

JF50 Page 6

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Horizontal Octave Polar Data JF50
JF50 125 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 250 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 7

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Horizontal Octave Polar Data JF50
JF50 500 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 1000 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 8

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Horizontal Octave Polar Data JF50
JF50 2000 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 4000 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 9

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Horizontal Octave Polar Data JF50
JF50 8000 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 16000 Hz Horizontal Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 10

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Vertical Octave Polar Data JF50
JF50 125 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 250 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 11

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Vertical Octave Polar Data JF50
JF50 500 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 1000 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 12

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Vertical Octave Polar Data JF50
JF50 2000 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 4000 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 13

One Main Street, Whitinsville MA, 01524 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540

ACOUS
TIC

ERSHIP
RTN

ORMANCE
PA
PERF
AL

Vertical Octave Polar Data JF50
JF50 8000 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

JF50 16000 Hz Vertical Octave Polar Data
0°
330°

30°

300°

60°

270°

90°

240°
B

120°
K
210°

150°
180°

Acoustic Performance Partnership

Eastern Acoustic Works

JF50 Page 14

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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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.1
Linearized                      : No
Page Count                      : 14
Create Date                     : 1995:09:14 16:16:13
Producer                        : Acrobat Distiller 2.1 for Power Macintosh
Creator                         : Adobe PageMaker 6.0
Title                           : JF50 APP V3
Subject                         : 
Author                          : Mitch
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