EAW KF850EF User manual

EASTERN ACOUSTIC WORKS
One Main Street, Whitinsville, MA 01588 • (508) 234 - 6158 • FAX (508) 234 - 8251 • Email [email protected] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# KF850EF KF850EF-888050 (A)/2 pp/1/29/99 • Printed In USA
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TECHNICAL SPECIFICATIONS KF850EF
DESCRIPTION
A 3-way triamplified full range system in a trapezoidal en-
closure. Includes a 15-in woofer in a wave guide cavity with
ARC™ device, a horn-loaded 10-in midrange cone and a 2-in
exit compression driver mounted coaxially in the wave guide
cavity on a 55 x 40 constant directivity horn..
APPLICATIONS
The KF850 Virtual Array loudspeaker is the world touring
standard, accepted in more technical riders than any other
loudspeaker. True 3-way design dramatically improves the
quality of vocal reproduction while the cone-driven midrange
horn and horn-loaded woofer extend pattern control to the
lowest octaves. Effective for large format permanent or por-
table applications. Six year warranty.
Applications include:
Concert Tours Corporate Events
Large Theaters Stadiums
Cathedrals Live Music Clubs
DESCRIPTIVE DATA
Part Number 999100
Product Group S
LF Subsystem & Loading 1x 15-in Horn Loaded Cone in
Wave Guide Cavity with ARC™
MF Subsystem & Loading 1x 10-in Horn Loaded Cone
HF Subsystem & Loading 1x 2-in Exit Compression Driver on
Constant Directivity Horn
System Configuration 3-way, Full Range
Powering Configuration(s) Triamplified
Recommended High-Pass
Frequency (24 dB/Octave) 60Hz
Cabinet Type (shape) Trapezoidal
Enclosure Materials Baltic Birch Plywood
Finish Black Catalyzed Polyurethane
Connectors 1 each male and female AP6
Suspension Hardware (4) 19-postition Flytracks (2 each
top and bottom)
Grill Vinyl Coated Perforated Steel,
Foam Backed
Options 179001 Flyclip with ring
179002 Flyclip with hook
Mounting Bracket 255010
Caster Pallet 850
NOMINAL DATA
Frequency Response (Hz)
±3 db 86Hz to 17kHz
-10 dB 65Hz
Axial Sensitivity (dB SPL/1 Watt/1m)
LF 102
MF 109
HF 112
Impedance (Ohms) LF 8
MF 8
HF 10
Power Handling, AES Standard (Watts)
LF 1000
MF 400
HF 200
Calculated Maximum Output (dB SPL, @ 1m)
LF Peak 138.0
MF Peak 141.0
HF Peak 141.0
LF Long Term 132.0
MF Long Term 135.0
HF Long Term 135.0
Nominal Coverage Angle / -6 dB points (degrees)
Horizontal 55
Vertical 40
Recommended Complementary Systems
Sub SB850/SB1000e
Dimensions inches millimeters
Height 42 1067
Width 26.375 670
Width (Front) 26.375 670
Width (Rear) 16.5 419
Depth 29.5 749
Trapezoid Angle 9.5 degrees per side
Weights pounds kilograms
Net Weight 250 113.8
Shipping Weight 258 117.4

Acoustic Performance Partnership Eastern Acoustic Works KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www.eaw.com • email [e-mail]
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TECHNICAL SPECIFICATIONS KF850EF
DIMENSIONAL DRAWINGS
DIMENSIONAL DRAWING SERVICE ITEMS
LF: Complete Cone Driver:
EAW Part No. 804036
MF: Complete Cone Driver
EAW Part No. 804022
HF: Complete Compression Driver/Tweeter
EAW Part No. 803011
Filter/Crossover Network: Complete Assembly
EAW Part No. 201062
ARCHITECTURAL SPECIFICATIONS
The three-way full range loudspeaker systems shall incorpo-
rate a 15-in LF transducer, a 10-in cone MF transducer and a
2-in exit compression driver HF transducer.
The LF driver shall be mounted in a wave guide cavity for
optimum low frequency directivity. The MF driver shall be
loaded into a midrange horn constructed of 3mm birch ply-
wood reinforced with high density polyurethane foam. The
MF horn shall incorporate a phase/displacement plug. The
HF driver shall be mounted in the wave guide cavity directly
in front of the LF driver and shall be loaded on a constant
directivity horn with a nominal coverage pattern of 55°(h)
x 40°(v). An acoustical filter shall be installed in the LF
waveguide cavity behind the HF section to absorb refracted
HF energy. An internal filter network shall provide system
equalization.
System frequency response shall vary no more than ±3 dB
from 86 Hz to 17 kHz measured on axis. The low frequency
section shall produce a Sound Pressure Level (SPL) of 102 dB
SPL on axis at 1 meter with a power input of 1 Watt, and
shall be capable of producing a peak output of 138 SPL on
axis at 1 meter. It shall handle 1000 Watts of amplifier power
(AES Standard) and shall have a nominal impedance of 8
Ohms. The midrange frequency section shall produce a Sound
Pressure Level (SPL) of 109 dB SPL on axis at 1 meter with a
power input of 1 Watt, and shall be capable of producing a
peak output of 141 SPL on axis at 1 meter. It shall handle
400 Watts of amplifier power (AES Standard) and shall have
a nominal impedance of 8 Ohms. The high frequency section
shall produce a Sound Pressure Level (SPL) of 112 dB SPL on
axis at 1 meter with a power input of 1 Watt, and shall be
capable of producing a peak output of 141 SPL on axis at 1
meter. It shall handle 200 Watts of amplifier power (AES
Standard) and shall have a nominal impedance of 10 Ohms.
The loudspeaker enclosure shall be trapezoidal in shape. It
shall be constructed of 15mm thickness void-free cross-grain-
laminated Baltic birch plywood and shall employ extensive
internal bracing. It shall be finished in black catalyzed poly-
urethane. Input connectors shall be one each male and fe-
male AP6. A total of four 19-positition flytracks (2 each top
and bottom) shall be provided. The front of the loudspeaker
shall be covered with a vinyl coated perforated steel grill
backed with open cell foam to protect against dust.
The three-way full range loudspeaker shall be the EAW model
KF850EF.
13.00
12.50
4.25
17.75
42.00
16.50
26.38
42.00
MOUNTING
POINT
1.75
3.91
7.00
29.91
19.00
2.25
11.00
10.63
TOP
29.50
FRONT
SIDES
BOTTOM
20.50
29.50
13.19
16.50 2.00
MOUNTING POINTS ARE RECESSED MULTI-POINT AIRCRAFT SEAT
FLY TRACK ATTACHED VERTICALLY AND HORIZONTALLY TO THE CABINET'S
ALUMINUM INTERNAL STRUCTURAL BRACES.
9.5°
BACK
1.75
3.25
BACK
KF850EF ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.
CENTER OF BALANCE.
510001
exp 11/1/96 shb