EAW JF50 Technical Specifications

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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

JF50 Technical 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 Omnimount
on the rear of the enclosure.

The two-way full range loudspeaker system shall be the EAW model
JF50.

tm

brand 75 series mounting hardware shall be located

Acoustic Performance Partnership Eastern Acoustic Works JF50 Page 1

One Main Street, Whitinsville MA, 01524 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • BBS 800/889-2540

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Drawings JF50

DIMENSIONAL DRAWING

JF50

6.25

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

16.50

6.14

1.63

7.00

4.22

2.00

2.13

1.11

INPUT PLATE

EASTERN ACOUSTIC WORKS

JF-50

4.25

1.05

SOUND REINFORCEMENT

SYSTEM

NO.

MADE IN USA

-- +

INPUT

--

2.00

PIN 1 
PIN 1+

--

...

+

...

FRONT

2.11

5.75

TOP/BOTTOM

R 12.72

SIDE

3.07

6.14

BACK

6.25

5.84

10°

TOP/BOTTOM

NEUTRIK

NEUTRIK

NL 4 MPR

Acoustic Performance Partnership Eastern Acoustic Works JF50 Page 2

One Main Street, Whitinsville MA, 01524 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • BBS 800/889-2540

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Performance Data JF50

FREQUENCY RESPONSE INPUT IMPEDANCE

120

100

dB SPL

80

B

K

60

100 1000 10000 20000

JF50 Axial Response

Frequency (Hz)

Q & DIRECTIVITY INDEX (DI)

100

10

Q

Horizontal Q and Directivity (1/3 Octave)

Vertical Q and Directivity (1/3 Octave)

Total Q and Directivity (1/3 Octave)

B

K

1

200 1000 10000

JF50 Q and Directivity

Frequency (Hz)

BEAMWIDTH

360

330
300
270
240

210
180
150

Degrees

120

90
60

B

30

0

200 1000 10000

JF50 Beamwidth vs Frequency

Horizontal Beamwidth (1/3 Octave)

Vertical Beamwidth (1/3 Octave)

K

Frequency (Hz)

20
18
16
14
12
10
8

Directivity Index

6
4
2
0

JF50 Full Range Input Impedance (Magnitude)

20

15

10

Ohms

5

B

K

0

20 100 1000 10000 20000

Frequency (Hz)

Q & BEAMWIDTH BY FREQUENCY

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

Acoustic Performance Partnership Eastern Acoustic Works JF50 Page 3

One Main Street, Whitinsville MA, 01524 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • BBS 800/889-2540

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Performance Data JF50

HORIZONTAL OFF-AXIS RESPONSE VERTICAL OFF-AXIS RESPONSE

On-axis response normalized to 0 dB. On-axis response normalized to 0 dB.

10

JF50 Horizontal ±10°

10

JF50 Vertical ±10°

0

-10

B

Attenuation in dB

-20

10

-10

Attenuation in dB

-20

10

-10

Attenuation in dB

-20

10

K

200 1000 10000

0

B

200 1000 10000

0

B

200 1000 10000

K

K

Horizontal +10 degrees

Horizontal -10 degrees

Frequency (Hz)

JF50 Horizontal ±20°

Horizontal +20 degrees

Horizontal -20 degrees

Frequency (Hz)

JF50 Horizontal ±30°

Horizontal +30 degrees

Horizontal -30 degrees

Frequency (Hz)

JF50 Horizontal ±40°

0

-10

B

Attenuation in dB

-20

10

0

-10

Attenuation in dB

-20

10

0

-10

Attenuation in dB

-20

10

K

200 1000 10000

B

K

200 1000 10000

B

K

200 1000 10000

Vertical +10 degrees

Vertical -10 degrees

Frequency (Hz)

JF50 Vertical ±20°

Vertical +20 degrees

Vertical -20 degrees

Frequency (Hz)

JF50 Vertical ±30°

Vertical +30 degrees

Vertical -30 degrees

Frequency (Hz)

JF50 Vertical ±40°

0

-10

B

Attenuation in dB

-20
200 1000 10000

K

Horizontal +40 degrees

Horizontal -40 degrees

Frequency (Hz)

0

-10

B

Attenuation in dB

-20
200 1000 10000

K

Vertical +40 degrees

Vertical -40 degrees

Frequency (Hz)

Acoustic Performance Partnership Eastern Acoustic Works JF50 Page 4

One Main Street, Whitinsville MA, 01524 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • BBS 800/889-2540

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270°

300°

330°

10000

12500

16000

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K

B

0°

30°

60°

90°

120°

150°

180°

210°

240°

270°

300°

330°

1600

2000

2500

3150

K

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0°

330°

Horizontal 1/3 Octave Polar Data JF50

30°

100

125

300°

60°

160

200

270°

270°

240°

B

300°

240°

B

90°

120°

K

210°

180°

0°

330°

K

210°

180°

150°

30°

150°

60°

120°

90°

250

315

400

500

270°

300°

240°

B

0°

330°

30°

4000

5000

60°

6300

8000

90°

120°

K

210°

180°

150°

0°

330°

300°

270°

240°

B

Acoustic Performance Partnership Eastern Acoustic Works JF50 Page 5

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210°

One Main Street, Whitinsville MA, 01524 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • BBS 800/889-2540

180°

30°

150°

630

800

60°

1000

1250

90°

120°