EAW KF750 Series User manual

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TECHNICAL SPECIFICATIONS KF750F
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# KF750F-888048 (A)/2 pp/1/29/99 • Printed In USA
DESCRIPTION
The KF750F 3-way triamplified full range system contains
many new EAW technologies that make it a powerful concert
touring sound reinforcement tool. Its Acoustic Singularity™
design aligns the three subsystems along a single axis so the
KF750 acts as a true point source, greatly reducing temporal
smearing of staccato events and improving overall clarity
and impact.
Since the large mid frequency horn contains both the high
and low frequency subsystems, the overall package is just 31
in. high. Still, the KF750F provides consistent wideband pat-
tern control in both the vertical and horizontal planes.
The LF subsystem includes two vented 12-in woofers mounted
in the MF horns upper and lower walls as a Dipolar Array™.
This Dipolar Array extends vertical directivity well into the
LF passband to minimize midbass build up below the array.
The large MF horn loads a specially designed 10-in midrange
cone whose geometry exactly matches the rear of its phase
plug assembly. By developing the driver and phase plug as a
single unit, pathlength discontinuities within the MF
passband have been eliminated without compromising the
directional qualities of the source as all previous phase plug
designs have.
The 2-in exit/100mm voice coil HF compression driver is
mounted on a 35 x 35 constant directivity horn mounted
coaxially within the MF horn flare.
TheKF750F’s15°-per-side trapezoidalenclosure featureseight
4-position flytracks (four each front and rear) that accept
industry-standard flyclips.
APPLICATIONS
The KF750F is designed to create arrays with optimized cov-
erage in both the horizontal and vertical planes to cover
audience areas ranging from 200 to 80,000 people.
At just 31-in tall and 190 lb. per module, KF750F arrays will
be smaller, lighter, more efficient and, therefore, more pow-
erful than those built with other systems. These smaller,
lighter arrays are easier to fly, require less truck space and
permit more open sight lines to cover any given venue.
The KF750F works with a companion downfill module, the
KF755F to provide full range nearfield coverage below the
array. When KF755’s are either not available or not desired,
the KF750F’s smooth power response produces remarkably
even SPL levels throughout the coverage area, allowing it to
be used for nearfield coverage when necessary.
Applications include:
Concert Tours
Performing Arts Centers
Theaters
DESCRIPTIVE DATA
Configuration 3-Way, Full Range
Powering Triamplified (MX8600 Processor)
LF Subsystem 2x 12-in Cones,
Dipolar Array, Vented
MF Subsystem 10-in Cone, Radial Phase Plug,
Horn-Loaded
HF Subsystem 2-in Exit/100mm Voice Coil
Compression Driver on CD Horn
Cabinet Type (shape) Trapezoidal
Enclosure Materials Baltic Birch Plywood
Finish Black Polyurethane
Connectors 2x Neutrik NL8 Speakon
Suspension Hardware 8x 4-Position Flytrack
(4 each front and rear)
Grill Powder Coated Perforated Steel,
Foam Backed
Dimensions inches millimeters
Height 31.00 787
Width (Front) 27.00 686
Width (Rear) 8.78 233
Depth 34.00 864
Trapezoid Angle 15 degrees per side
Weights pounds kilograms
Net Weight 190 86.5
Shipping Weight 200 91.0
Companion Systems
Sub Bass SB850R/SB1000e/KF940
Full Range Downfill KF755F
Options KF700 Series Caster Pallet

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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DIMENSIONAL DRAWING
TECHNICAL SPECIFICATIONS KF750F
510741 (B)
exp 11/17/98 jfs
KF750F
7.28
4.50
3.00
27.80
FRONT
GRILL PARTIALLY
SHOWN
27.00
31.00
L
C
NOTES:
1. SYMBOL INDICATES CENTER OF
BALANCE. TBD
2. SYMBOL INDICATES FLY TRACK
MOUNTING POINTS.
3. WEIGHT APPROX: 200 LBS.
4. SHIPPING WEIGHT APPROX: 220 LBS.
INPUT
3.63
6.44
10.87
7.75
30°
C
L
DIMENSIONS APPLY
TO TOP AND BOTTOM
TOP
(8.78)
34.00
A
A
4.00
VIEW A-A
DIMENSIONS APPLY
TO BOTH SIDES
BACK
6.63
ARCHITECTURAL SPECIFICATIONS
The three-way full range loudspeaker systems shall incorpo-
rate 2x 12-in LF transducers, a 10-in MF cone transducer and
a 2-in exit/100mm voice coil compression driver HF trans-
ducer.
The LF drivers shall be mounted in a vented enclosure tuned
for optimum low frequency response and separated verti-
cally to produce off-axis cancellation at a tuned frequency.
The MF driver shall be mounted on a large-format horn and
shall be coupled to a phase plug whose geometry exactly
matches that of the driver. The HF driver shall be loaded on
a constant directivity horn with a nominal coverage pattern
of 35°(h) x 35°(v).
System frequency response shall vary no more than ±3 dB
from 48 Hz to 18 kHz measured on axis. The loudspeaker’s
subsystems (LF/MF/HF) shall produce Sound Pressure Level
(SPL) of 103/109/116 dB SPL on axis at 1 meter with a
power input of 1 Watt, and shall be capable of producing a
peak output of 139.8/141.0/145.0 dB SPL on axis at 1 meter.
The subsystems (LF/MF/HF) shall handle 1200/400/200 Watts
of amplifier power (AES Standard) and shall have nominal
impedances of 2x 8/8/8 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 connector shall be a Neutrik NL8 with an
additional NL8 provided for connect through. A total of
eight 4-position flytracks (4 each front and rear) shall be
provided. The front of the loudspeaker shall be covered with
a powdercoated perforated steel grill.
The three-way full range loudspeaker systems shall be the
EAW model KF750F.
NOMINAL DATA
Frequency Response (1 Watt @ 1m)
±3 db 48 Hz to 18 kHz
-10 dB 30 Hz
Axial Sensitivity (dB SPL, 1 Watt @ 1m)
LF 103
MF 109
HF 116
Impedance (Ohms) LF 2x 8
MF 8
HF 8
Power Handling, AES Standard (Watts)
LF 1200
MF 400
HF 200
Calculated Maximum Output (dB SPL @ 1m)
LF Peak/Long Term 139.8/133.8
MF Peak/Long Term 141.0/135.0
HF Peak/Long Term 145.0/139.0
Nominal Coverage Angles, -6 dB points (degrees)
Horizontal 35
Vertical 35
Recommended High-Pass Frequency (24 dB/Octave)
35 Hz

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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FREQUENCY RESPONSE
INPUT IMPEDANCE
PERFORMANCE SPECIFICATIONS KF750F
0
5
10
15
20
20 100 1000 10000 2000
0
Ohms
Frequency (Hz)
HF Tri-Amp Input Impedance (Magnitude)
MF Tri-Amp Input Impedance (Magnitude)
LF Tri-Amp Input Impedance (Magnitude)
KF750F Input Impedance (Magnitude)
K
B
60
80
100
120
50 100 1000 10000 2000
0
dB SPL
Frequency
(
Hz
)
KF750F Axial Response
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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BEAMWIDTH
Q & DIRECTIVITY INDEX (DI)
PERFORMANCE SPECIFICATIONS KF750F
0
30
60
90
120
150
180
210
240
270
300
330
360
200 1000 1000
0
Degrees
Frequency (Hz)
Horizontal Beamwidth (1/3 Octave)
Vertical Beamwidth (1/3 Octave)
KF750F Beamwidth vs Frequency
K
B
1
10
100
1
10
100
200 1000 10000
Q
Directivit
y
Index
Frequency (Hz)
Horizontal Q and Directivity (1/3 Octave)
Vertical Q and Directivity (1/3 Octave)
Total Q and Directivity (1/3 Octave)
KF750F Q and Directivity
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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PERFORMANCE SPECIFICATIONS KF750F
POWER RESPONSE
60
80
100
120
200 1000 10000 2000
0
dB SPL
Fre
q
uenc
y
(
Hz
)
KF750F Beamwidth Delimited Power Response
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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Q & DIRECTIVITY & BEAMWIDTH BY FREQUENCY
Frequency Hor Beamwidth Ver Beamwidth Hor Q & Dir Ver Q & Dir Tot Q & Dir
100 239 172 2.3 2.8 2.4
125 226 179 2.4 2.7 2.5
160 213 179 2.6 2.9 2.7
200 177 158 3.1 3.3 3.2
250 124 120 4.6 4.6 4.6
315 100 93 7.4 8.4 7.9
400 79 72 10.2 12.5 11.2
500 68 61 14.3 16.1 15.1
630 53 43 20.1 16.4 18.1
800 45 43 23.5 14.8 18.1
1000 39 40 28.4 20.4 23.7
1250 44 60 24.7 18.5 21.1
1600 45 46 25.5 23.2 24.3
2000 42 41 25.9 24.4 25.1
2500 32 29 36.2 35.6 35.9
3150 28 30 40.7 36.6 38.5
4000 33 35 38.3 39.2 38.7
5000 34 34 41.6 42.2 41.9
6300 31 32 47.7 38.4 42.6
8000 28 31 55.7 39.9 46.6
10000 38 41 26.5 38.1 31.1
12500 37 33 41.4 43.8 42.6
16000 30 35 52.6 39 44.8
20000 35 35 46.9 45.1 46.00
PERFORMANCE SPECIFICATIONS KF750F

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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HORIZONTAL OFF-AXIS RESPONSE
On-axis response normalized to 0 dB.
PERFORMANCE SPECIFICATIONS KF750F
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Frequency
(
Hz
)
Horizontal +10 degrees
Horizontal -10 degrees
KF750F Horizontal ±10°
K
B
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Frequency
(
Hz
)
Horizontal +20 degrees
Horizontal -20 degrees
KF750F Horizontal ±20°
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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PERFORMANCE SPECIFICATIONS KF750F
VERTICAL OFF-AXIS RESPONSE
On-axis response normalized to 0 dB.
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Frequency
(
Hz
)
Horizontal +30 degrees
Horizontal -30 degrees
KF750F Horizontal ±30°
K
B
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Frequency
(
Hz
)
Horizontal +40 degrees
Horizontal -40 degrees
KF750F Horizontal ±40°
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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VERTICAL OFF-AXIS RESPONSE
On-axis response normalized to 0 dB.
PERFORMANCE SPECIFICATIONS KF750F
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Fre
q
uenc
y
(
Hz
)
Vertical +10 degrees
Vertical -10 degrees
KF750F Vertical ±10°
K
B
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Fre
q
uenc
y
(
Hz
)
Vertical +20 degrees
Vertical -20 degrees
KF750F Vertical ±20°
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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VERTICAL OFF-AXIS RESPONSE
On-axis response normalized to 0 dB.
PERFORMANCE SPECIFICATIONS KF750F
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Fre
q
uenc
y
(
Hz
)
Vertical +30 degrees
Vertical -30 degrees
KF750F Vertical ±30°
K
B
-20
-10
0
10
20
100 1000 10000
Attenuation in dB
Fre
q
uenc
y
(
Hz
)
Vertical +40 degrees
Vertical -40 degrees
KF750F Vertical ±40°
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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HORIZONTAL 1/3 OCTAVE POLAR DATA KF750F
6 db/div.
0°30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
100
125
160
200
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°
630
800
1000
1250
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°
4000
5000
6300
8000
K
B
0°30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
10000
12500
16000
20000
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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VERTICAL 1/3 OCTAVE POLAR DATA KF750F
0°30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
100
125
160
200
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°
4000
5000
6300
8000
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

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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HORIZONTAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 125 Hz Horizontal Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 250 Hz Horizontal Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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HORIZONTAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 500 Hz Horizontal Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 1000 Hz Horizontal Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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HORIZONTAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 2000 Hz Horizontal Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 4000 Hz Horizontal Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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HORIZONTAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 8000 Hz Horizontal Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 16000 Hz Horizontal Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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VERTICAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 125 Hz Vertical Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 250 Hz Vertical Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
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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VERTICAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 1000 Hz Vertical Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 500 Hz Vertical Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
One Main Street, Whitinsville MA, 01588 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www.eaw.com • email [e-mail]
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
VERTICAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 2000 Hz Vertical Octave Polar Data
K
B
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 4000 Hz Vertical Octave Polar Data
K
B

Acoustic Performance Partnership Eastern Acoustic Works KF750F
One Main Street, Whitinsville MA, 01588 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www.eaw.com • email [e-mail]
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
VERTICAL OCTAVE POLAR DATA KF750F
6 db/div.
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
K
B
KF750F 8000 Hz Vertical Octave Polar Data
0°
30°
60°
90°
120°
150°
180°
210°
240°
270°
300°
330°
KF750F 16000 Hz Vertical Octave Polar Data
K
B