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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JF50 Technical Specifications
APPLICATIONS
ARCHITECTURAL SPECS
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
The two-way full range loudspeaker system shall incorporate two 5.25-
inch
cone low frequency transducers and one 25mm soft-dome high
frequency transducer. The total system shall meet the following perfor-
mance criteria: Frequency Response of 100 - 18k Hz
±
3 dB; Axial Sensi-
tivity (1 W @ 1 m) of 94 dB SPL (LF); 100 hour sine wave Power Han-
dling of 120 Watts , AES method Power Handling of 300 Watts; Hori-
zontal 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 cross-
grain-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
tm
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.
SPECIFICATIONS
Frequency Response
±
3 db
100 Hz to 18 kHz
-10 dB
67 Hz
Axial Sensitivity
SPL 1w @ 1m
94 dB
Impedance
Nominal
16
Ω
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)
• Group J Hardware Technical Specifications
• Group J Price Lists
• APP Testing Procedures*
• Water Proofing Technical Specifications
• Structural/Mechanical Technical Specifications*
OTHER RELEVANT DOCUMENTS
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