Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel 800 992 5013 / 508 234 6158 fax 508 234 8251 www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice.
Part Number: Preliminary March 2008
K F 7 3 7 S p e c i f i c a t i o n s
group · S
FEATURES
• High-Q brings longer throw capability to KF730 arrays
• Nominal horizontal beamwidth of 75 degrees
• Fits seamlessly within KF730 Series arrays
• Integral light fly hardware of 6061-T6 structural aluminum
DESCRIPTION
The high-Q KF737 enhances the ability of the KF730 Series to deliver
concert-level output and performance in an exceptionally wide range
of applications. It may be used at the top of a KF730 array to project
focused energy over long distances. It may also be used on its own in
shoe-box style halls where you want to keep sidewall reflections to a
minimum. The KF737, along with low-Q KF730 full range loudspeaker
and SB730 subwoofer, is an excellent solution for applications such
as houses of worship, corporate A/V, theatres, hotel ballrooms, and
concert halls. The system is also ideal for supplemental coverage
for larger line arrays, such as the KF760 Series. Such uses include
audience side fill, stage lip fill, delayed arrays for balconies, and
stage/performer coverage.
One large MF/HF horn fills the entire face of the enclosure, better
maintaining horizontal pattern control throughout the MF/HF
passband. The curved aperture MF loading slots effectively move the
MF acoustic original further into the horn than physical space permits.
The side-mounted LF drivers provide a forward-firing, figure-8-type
pattern. The drivers are spaced so that the LF beamwidth matches
the MF through crossover.
A bi-amplified power configuration (passive mid/high) reduces
system cost and complexity. Processing for the arrays is intentionally
simple and can be greatly enhanced with the EAW UX8800 dual-
mode digital processor, which supplies Gunness Focusing alignment
and driver processing algorithms.
The KF737, like the rest of the KF730 Series, offers very friendly
truck-pack dimensions. Its rigging system is fully compatible with
the KF730 full-range module as well as the SB730 subwoofer. The
versatile rigging design fosters fast construction of arrays ranging
from 4 to 18 enclosures. Each KF737 includes six QRP2 Quick
Release Pins.
3-WAY FULL-RANGE BI-AMP (passive MF/HF filter)
Performance is for a single KF737.
CONFIGURATION
Subsystem
Transducer
Loading
LF 2x 10 in cone
Phase Aligned™
MF 2x 7 in cone
Horn-loaded
HF 2x 1 in exit, 1.75 in voice Horn-loaded w/Radial
coil neodymium
Phase Plug™
compression driver
Operating Mode
Amplifier Channels
External Signal Processing
Bi-amp LF, MF/HF
DSP w/2-way filters
PERFORMANCE
1
Operating Range
80 Hz to 20 kHz
Nominal Beamwidth
(rotatable)
Horz 75°
Vert 12°
Axial Sensitivity
(whole space SPL)
MF/HF 105 dB
230 Hz to 20 kHz
LF 91 dB
80 Hz to 230 Hz
Peak Sensitivity
(whole space SPL)
MF/HF 112 dB
20 Hz to 20 kHz
LF 92 dB
20 Hz to 20 kHz
Input Impedance
(ohms)
Nominal
Minimum
MF/HF 16
15.9 @ 680 Hz
LF 16
16 @ 250 Hz
Recommended High Pass Filter
High Pass =>80 Hz, 24 dB/octave
Accelerated Life Test
2
MF/HF 75 V
350 W @ 16 ohm
LF 106 V
700 W @ 16 ohm
Calculated Axial Output Limit
(whole space SPL)
Average
Peak
MF/HF 130 dB
136 dB
LF 119 dB
125 dB
ORDERING DATA
Description
Part Number
KF737 Line Array Loudspeaker - Black
0016014-90
Optional Accessories
FB737 Fly Bar
0006265
PB173 Pull Bar
0008090
QRP2 Quick Release Pins (Spare)
0020558-01
PLT73K Caster Pallet
0006385
1
To achieve specified performance, the listed external signal processing with EAW-provided settings is required.
2
For recommendations to select power amplifier size refer to : “HOW MUCH AMPLIFIER POWER DO I NEED?” on the EAW web site.
PRELIMINAR
Y
