Acoustic Performance Partnership
Eastern Acoustic Works
KF750F
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]
AC
O
US
TIC
AL
PER
FORMANCE PA
RTN
ER
SH
IP
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. SYMB OL
INDICA TES CENTER OF
BA LANCE. TBD
2. SYMB OL
INDICA TES FLY TRA CK
MOUNTING POINTS.
3. WEIGHT APPROX: 200 LB S.
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