EAW KF737 User Manual

KF737 Specifications group · S

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

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 dual­mode 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.

PRELIMINARY

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.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: Preliminary March 2008

KF737 Specifications group · S

ENCLOSURE

Material Baltic birch plywood

Finish Wear resistant textured black paint
Grille Powder-coated perforated steel

PRELIMINARY

NOTE: This drawing has been reduced. Do not scale.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. Part Number: Preliminary March 2008