EAW KF853 User manual
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
Technical Specifications KF853
APPLICATIONS
ARCHITECTURAL SPECS
OTHER RELEVANT DOCUMENTS
• Group C Hardware Technical Specifications
• Group C Price Lists
• APP Testing Procedures*
•Weather Proofing Technical Specifications
• Structural/Mechanical Technical Specifications*
The 2-way mid/high loudspeaker system shall incorporate two 10-inch
cone mid-frequency transducers and a 2 inch throat compression driver
mounted to a constant directivity HF horn. The system shall have Fre-
quency Response of 200 Hz to 17 kHz ±1.5 dB; Axial Sensitivity (1W @
1m) of 118 dB SPL (MF), 117 dB SPL (HF); 100 hour sine wave Power
Handling of 300 Watts (MF), 70 Watts (HF); Nominal horizontal cover-
age of 30°between -6 dB points; Nominal vertical coverage of 40°
between -6 dB points.
The system’s midrange drivers shall be loaded into a constant horizontal
coverage horn constructed of 3 mm cross-grain-laminated birch hard-
wood, reinforced with high density polyurethane foam and incorpo-
rating dual center displacement plugs. The high frequency driver shall
utilize a titanium diaphragm not less than 75 mm in diameter and in-
clude ferrofluid in the voicecoil gap to aid in cooling and damping.
Internal filters shall allow tri-amp operation and shall include driver pro-
tection and equalization networks.
The loudspeaker enclosure shall be trapezoidal in shape and constructed
of 18mm thickness, void-free, cross-grain-laminated birch plywood and
shall include extensive internal bracing. It shall be finished in black cata-
lyzed polyurethane. All external hardware shall be stainless steel or alu-
minum or shall be coated to protect against rust and corrosion. The
front of the system shall be covered with a perforated steel grill, coated
with vinyl to dampen resonance and backed with open cell foam to
protect against dust. Heavy duty Aircraft Seat Track suspension points
shall be installed in the top and bottom of the enclosure. Aluminum
bar-stock shall connect the top and bottom suspension points.
The loudspeaker system shall be the KF853.
PRELIMINARY PRODUCT INFORMATION
The KF853 Virtual Array®System is a long-throw two way horn-loaded
loudspeaker designed to cover the frequency range from 200Hz to
17kHz. The frequency response of this system is optimized to compen-
sate for atmospheric attenuation of high frequencies over long distances.
The large vertical dimension of the midrange horn allows for excellent
pattern control down to the lowest frequencies of operation. Dual 10"
midrange drivers offer peak output levels of up to 147 dB at 1 meter.
EAW's new proprietary ferrofluid cooled CD5003 high frequency com-
pression driver provides high output with extremely low distortion.
The KF853 has been specifically engineered to operate in conjunction
with the BH853 long-throw horn-loaded mid-bass system as the long-
throw element of the KF850 "family". Other "family" members include:
the KF850 three-way system, KF852 mid-high system, BH852 horn-
loaded mid-bass system and the SB850 & SB1000 direct radiating sub-
woofers. Together, they form the elements of the KF850 Stadium Array
System. Arrays incorporating these loudspeaker systems are easily scal-
able from clubs and proscenium theaters to arenas, stadia and the larg-
est outdoor events.
EASTERN ACOUSTIC WORKS
One Main Street, Whitinsville, MA 01588 • (508) 234 - 6158 • FAX (508) 234 - 8251 • BBS (800) 889-2540
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# KF853/C5/3/5/95
Frequency Response
±1.5 db 200 to 17k Hz
-10 dB: 130 Hz
Efficiency / Axial Sensitivity
MF 1 W @ 1m: 118 dB SPL
HF 1 w @ 1m: 117 dB SPL
Impedance
MF/HF: 8 Ω(Nominal)
Power Handling
MF 100 hr. Sine Wave: 300 Watts
HF 100 hr. Sine Wave: 70 Watts
MF AES Standard: 800 Watts
HF AES Standard: 200 Watts
Maximum Output
MF Peak SPL: 147 dB SPL
HF Peak SPL: 140 dB SPL
MF Long Term: 142 dB SPL
HF Long Term: 135 dB SPL
Nominal Coverage Angles (-6 dB)
Horizontal: 40 degrees
Vertical: 30 degrees
Additional Descriptive Data
MF Subsystem: 2 x 10-in Cone; Horn Loaded
HF Subsystem: 1x 2-in Throat Compression Driver
On Constant Directivity Horn
Powering Mode: Tri-Amp (LF component: BH852)
Standard Crossover: MX8000-853
Finish: Black Catalyzed Polyurethane
Connectors: 1 ea. Male & Female Cannon AP6,
Banana Test Points
Rigging: 2 x Anchra Track, Top & Bottom;
Internal Subframe
Grill: Vinyl Coated Perforated Steel; Open
Cell Foam Backing
Dimensions & Weights
Height: 42.0 in (1066 mm)
Width: 27.38 in (695 mm)
Depth: 25.5 in (647 mm)
Back Width: 15.5 in (394 mm)
Net Weight: 231 lbs (103.0 Kg)
Shipping Weight: 246 lbs (110.7 Kg)
SPECIFICATIONS
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 2
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Drawings KF853
DIMENSIONAL DRAWINGS
PIN 5
PIN 6
HIGH
HIGH
...
...
--
+
PIN 3
PIN 4
MID
MID
...
...
--
+
PIN 1
PIN 2
LOW
LOW
...
...
--
+
KF-853EF
NO.
MADE IN USA
EASTERN ACOUSTIC WORKS
Virtual Array
TM
TECHNOLOGY
CANNON
1
2
3
4
5
6
CANNON
1
2
3
4
56
INPUT PLATES
KF853
35.50
19.25
10.41
6.34
35.50
SIDES
15.50
6.11
BACK
42.00
TOP/BOTTOM
FRONT
27.38
27.38
15.50
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 3
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Performance Data KF853
DISTORTIONFREQUENCY RESPONSE
Q & DIRECTIVITY INDEX (DI)
BEAMWIDTH
Freq Hor Q Ver Q Tot Q Hor Beamwidth Ver Beamwidth
200 4.6 4.1 4.5 127 130
250 4.8 4.3 4.6 119 126
315 6.2 5.8 6 101 102
400 7.9 8.1 8.1 88 86
500 10.3 11.9 11.1 76 71
630 14 16 15.2 61 52
800 16.3 20.2 18.1 53 49
1000 22.1 38 27.9 49 37
1250 24.1 60.2 34.4 48 20
1600 20.8 25.8 23 48 46
2000 26.9 25.2 26 43 45
2500 29.3 31.4 30.9 38 37
3150 31.2 40.5 35.5 38 30
4000 39.8 53.9 45.9 33 25
5000 41.3 52.2 51.3 33 22
6300 43.9 53.9 54.4 34 23
8000 47.4 86.6 61.3 33 21
10000 47.7 42.1 56.7 32 18
12500 54.3 47.6 54 31 30
16000 41.9 85.3 56.2 36 23
20000 24.7 31.3 33.7 40 18
Q & BEAMWIDTH BY FREQUENCY
80
100
120
140
100 1000 10000 20000
dB SPL
Frequency (Hz)
KF853 Axial Response
Predicted Axial Response at
100 Feet (Normalized to 1 m)
KF853 with Processor Axial Response
K
B
0
20
40
60
80
100
120
140
200 1000 10000
dB SPL
Frequency (Hz)
Fundamental at 1% Power (raised 10 dB)
2nd Harmonic at 1% Power (raised 10 dB)
3rd Harmonic at 1% Power (raised 10 dB)
Fundamental at 10% Power
2nd Harmonic at 10% Power
3rd Harmonic at 10% Power
KF853 (with Processor) Harmonic Content
K
B
0
30
60
90
120
150
180
210
240
270
300
330
360
200 1000 10000
Degrees
Frequency (Hz)
Horizontal Beamwidth (1/3 Octave)
Vertical Beamwidth (1/3 Octave)
KF853 with Processor Beamwidth vs Frequency
K
B
1
10
100
0
2
4
6
8
10
12
14
16
18
20
200 1000 10000
Q
Directivity Index
Frequency (Hz)
Horizontal Q and Directivity (1/3 Octave)
Vertical Q and Directivity (1/3 Octave)
Total Q and Directivity (1/3 Octave)
KF853 with Processor Q and Directivity
K
B
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 4
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
HORIZONTAL OFF-AXIS RESPONSE VERTICAL OFF-AXIS RESPONSE
Performance Data KF853
INPUT IMPEDANCE
On-axis response normalized to 0 dB. On-axis response normalized to 0 dB.
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Horizontal +10 degrees
Horizontal -10 degrees
KF853 with Processor Horizontal ±10°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Vertical +10 degrees
Vertical -10 degrees
KF853 with Processor Vertical ±10°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Horizontal +40 degrees
Horizontal -40 degrees
KF853 with Processor Horizontal ±40°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Vertical +40 degrees
Vertical -40 degrees
KF853 with Processor Vertical ±40°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Horizontal +20 degrees
Horizontal -20 degrees
KF853 with Processor Horizontal ±20°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Vertical +20 degrees
Vertical -20 degrees
KF853 with Processor Vertical ±20°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Horizontal +30 degrees
Horizontal -30 degrees
KF853 with Processor Horizontal ±30°
K
B
-30
-20
-10
0
10
200 1000 10000
Attenuation in dB
Frequency (Hz)
Vertical +30 degrees
Vertical -30 degrees
KF853 with Processor Vertical ±30°
K
B
0
5
10
15
20
20 100 1000 10000 20000
Ohms
Frequency (Hz)
MF/HF Bi-Amp Input Impedance (Magnitude)
LF Bi-Amp Input Impedance (Magnitude)
KF853 with Processor
Bi-Amp Input Impedance (Magnitude)
K
B
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 5
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
KF853 Q & DIRECTIVITY KF853 BEAMWIDTH
0
30
60
90
120
150
180
210
1000 10000 20000
Degrees
Frequency (Hz)
KF853 (with processor)
Horizontal Beamwidth vs Frequency
K
B
1
10
100
0
2
4
6
8
10
12
14
16
18
20
1000 10000 20000
Q
Directivity Index
Frequency (Hz)
Q (Horizontal)
Directivity (Horizontal)
KF853 (with processor) Q and Directivity
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
1000
1250
1600
2000
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
6300
8000
10000
12500
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
2500
3150
4000
5000
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
16000
20000
K
B
KF853 2-ARRAY 1/3 OCTAVE HORIZONTAL POLARS
Performance Data 2-Array KF853
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 6
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Horizontal 1/3 Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
10000
12500
16000
20000
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
200
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
1600
2000
2500
3150
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
630
800
1000
1250
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
250
315
400
500
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
4000
5000
6300
8000
K
B
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 7
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Vertical 1/3 Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
4000
5000
6300
8000
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
10000
12500
16000
20000
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
1600
2000
2500
3150
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
200
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
630
800
1000
1250
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
250
315
400
500
K
B
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 8
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Horizontal Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 250 Hz Horizontal Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 500 Hz Horizontal Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 9
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Horizontal Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 1000 Hz Horizontal Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 2000 Hz Horizontal Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 10
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Horizontal Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 4000 Hz Horizontal Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 8000 Hz Horizontal Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 11
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Horizontal Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 16000 Hz Horizontal Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 12
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Vertical Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 250 Hz Vertical Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 500 Hz Vertical Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 13
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Vertical Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 1000 Hz Vertical Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 2000 Hz Vertical Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 14
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Vertical Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 4000 Hz Vertical Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 8000 Hz Vertical Octave Polar Data
6 db/div.
Acoustic Performance Partnership Eastern Acoustic Works KF853 Page 15
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • BBS 800/889-2540
A
C
O
U
S
T
I
C
A
L
P
E
R
F
O
R
M
A
N
C
E
P
A
R
T
N
E
R
S
H
I
P
PRELIMINARY PRODUCT INFORMATION
Vertical Octave Polar Data KF853
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF853 16000 Hz Vertical Octave Polar Data
6 db/div.
Table of contents
Other EAW Speakers System manuals
