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TECHNICAL SPECIFICATIONS
KF850EF
DESCRIPTION
A 3-way triamplified full range system in a trapezoidal enclosure. 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 portable applications. Six year warranty.
Applications include:
Concert Tours
Large Theaters
Cathedrals
Corporate Events
Stadiums
Live Music Clubs
DESCRIPTIVE DATA
Part Number
Product Group
LF Subsystem & Loading
MF Subsystem & Loading
HF Subsystem & Loading
System Configuration
Powering Configuration(s)
Recommended High-Pass
Frequency (24 dB/Octave)
Cabinet Type (shape)
Enclosure Materials
Finish
Connectors
Suspension Hardware
Grill
Options
999100
S
1x 15-in Horn Loaded Cone in
Wave Guide Cavity with ARC™
1x 10-in Horn Loaded Cone
1x 2-in Exit Compression Driver on
Constant Directivity Horn
3-way, Full Range
Triamplified
60Hz
Trapezoidal
Baltic Birch Plywood
Black Catalyzed Polyurethane
1 each male and female AP6
(4) 19-postition Flytracks (2 each
top and bottom)
Vinyl Coated Perforated Steel,
Foam Backed
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
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 999100 (A)/2p/3/14/97 • Printed In USA
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DIMENSIONAL
DRAWING
DIMENSIONAL
DRAWINGS
KF850EF
SERVICE ITEMS
MOUNTING POINTS ARE RECESSED MULTI-POINT AIRCRAFT SEAT
FLY TRACK ATTACHED VERTICALLY AND HORIZONTALLY TO THE CABINET'S
ALUMINUM INTERNAL STRUCTURAL BRACES.
ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE NOTED.
CENTER OF BALANCE.
1.75
13.00
3.25
17.75
42.00
11.00
4.25
10.63
26.38
1.75
FRONT
16.50
The three-way full range loudspeaker systems shall incorporate a 15-in LF transducer, a 10-in cone MF transducer and a
2-in exit compression driver HF transducer.
BACK
BACK
9.5°
2.25
20.50
42.00
19.00
29.91
29.50
3.91
7.00
13.19
510001
exp 11/1/96 shb
TOP
29.50
BOTTOM
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
12.50
2.00
16.50
MOUNTING
POINT
KF850EF
SIDES
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 plywood 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-grainlaminated Baltic birch plywood and shall employ extensive
internal bracing. It shall be finished in black catalyzed polyurethane. Input connectors shall be one each male and female 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.
Acoustic Performance Partnership
Eastern Acoustic Works
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF850EF
BEAMWIDTH
FREQUENCY RESPONSE
KF850E w/MX800i-8E Axial Response
KF850E w/MX800i-8E Beamwidth vs Frequency
120
360
330
Horizontal Beamwidth (1/3 Octave)
300
Vertical Beamwidth (1/3 Octave)
270
100
dB SPL
Degrees
240
80
210
180
150
120
90
B
60
K
30
100
1000
10000
B
K
0
200
60
20000
1000
10000
Frequency (Hz)
Frequency (Hz)
Q & DIRECTIVITY INDEX (DI)
INPUT IMPEDANCE
KF850E w/MX800i-8E Q and Directivity
KF850E w/MX800i-8E Input Impedance (Magnitude)
20
100
20
18
15
14
Q
Ohms
12
10
10
10
8
Horizontal Q and Directivity (1/3 Octave)
HF Tri-Amp Input Impedance (Magnitude)
5
MF Tri-Amp Input Impedance (Magnitude)
B
LF Tri-Amp Input Impedance (Magnitude)
B
0
20
100
K
1000
6
Vertical Q and Directivity (1/3 Octave)
4
Total Q and Directivity (1/3 Octave)
2
K
1
200
10000
0
10000
1000
20000
Directivity Index
16
Frequency (Hz)
Frequency (Hz)
Q & BEAMWIDTH BY FREQUENCY
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
Acoustic Performance Partnership
Eastern Acoustic Works
Hor Q
2.4
2.6
2.5
3.5
4
5.1
6.1
8.1
10.1
11.4
14
15.1
15.6
16.9
16.6
18.9
23.9
20
21.4
19.9
16.7
8.7
21.2
31.9
Ver Q
2.3
2.6
3
4
7.3
7.3
6.8
7.2
7.9
12.6
21
22.5
15.8
18.4
20.9
26.4
31.1
37
44.1
30.5
33.2
19.3
29.2
20.4
Tot Q
2.3
2.6
2.7
3.7
5.2
6
6.3
7.6
8.8
11.9
16.4
14.9
13.8
17.5
18.5
21.9
27
24.4
28.1
22.4
20.9
14
25.7
24.7
Hor Beamwidth Ver Beamwidth
360
360
185
182
191
166
153
121
141
90
113
89
103
90
86
94
76
89
70
70
63
49
61
26
59
53
60
54
56
49
49
40
44
36
50
32
51
30
51
34
54
36
65
48
51
39
32
40
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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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
KF850E w/MX800i-8E Vertical ±10°
10
Attenuation in dB
Attenuation in dB
On-axis response normalized to 0 dB.
KF850E w/MX800i-8E Horizontal ±10°
10
0
-10
Vertical +10 degrees
B
K
-20
200
10000
Attenuation in dB
Attenuation in dB
Horizontal +20 degrees
K
-20
200
Horizontal -20 degrees
1000
KF850E w/MX800i-8E Vertical ±20°
10
0
B
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
KF850E w/MX800i-8E Vertical ±30°
10
0
B
0
-10
Vertical +30 degrees
B
K
-20
200
10000
Attenuation in dB
Attenuation in dB
Horizontal +40 degrees
-20
200
K
Horizontal -40 degrees
1000
KF850E w/MX800i-8E Vertical ±40°
10
0
B
10000
0
-10
Vertical +40 degrees
B
-20
200
Frequency (Hz)
Acoustic Performance Partnership
10000
Frequency (Hz)
KF850 w/MX800i-8E Horizontal ±40°
-10
Vertical -30 degrees
1000
Frequency (Hz)
10
10000
Frequency (Hz)
KF850E w/MX800i-8E Horizontal ±30°
-10
Vertical -20 degrees
1000
Frequency (Hz)
10
10000
Frequency (Hz)
KF850E w/MX800i-8E Horizontal ±20°
-10
Vertical -10 degrees
1000
Frequency (Hz)
10
KF850EF
K
Vertical -40 degrees
1000
10000
Frequency (Hz)
Eastern Acoustic Works
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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HORIZONTAL 1/3 OCTAVE
0° POLAR DATA
330°
KF850EF
0°
100
30°
330°
1600
30°
125
60°
300°
160
2000
300°
60°
2500
200
270°
90°
240°
B
3150
270°
120°
240°
K
B
210°
90°
120°
K
150°
210°
180°
0°
330°
150°
180°
0°
4000
30°
330°
250
30°
5000
315
300°
270°
400
6300
500
8000
270°
90°
240°
K
210°
90°
240°
120°
B
B
60°
300°
60°
120°
K
210°
150°
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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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VERTICAL 1/3 OCTAVE0°POLAR DATA
330°
KF850EF
0°
100
30°
330°
1600
30°
125
300°
60°
160
2000
300°
60°
2500
200
270°
90°
240°
B
120°
3150
270°
240°
B
K
210°
90°
120°
K
150°
210°
180°
0°
330°
150°
180°
0°
250
30°
330°
4000
30°
315
300°
60°
400
5000
300°
60°
6300
500
270°
90°
240°
B
8000
270°
120°
240°
K
B
210°
90°
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°
120°
K
210°
150°
150°
180°
180°
Acoustic Performance Partnership
90°
240°
B
K
60°
Eastern Acoustic Works
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF850EF
KF850E 125 Hz Horizontal Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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KF850EF
KF850E 500 Hz Horizontal Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF850EF
KF850E 2000 Hz Horizontal Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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KF850EF
KF850E 8000 Hz Horizontal Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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KF850EF
KF850E 125 Hz Vertical Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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KF850EF
KF850E 500 Hz Vertical Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF850EF
KF850E 2000 Hz Vertical Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF850EF
KF850E 8000 Hz Vertical Octave Polar Data
0°
330°
30°
300°
60°
270°
90°
240°
B
120°
K
210°
150°
180°
KF850E 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
KF850EF
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]