KF740

3-WAY LINE ARRAY MODULE

The KF740 line array system is optimized for the widest possible range of touring and installation applications. With high output capabilities and a footprint and weight similar to the KF730, the KF740 is the ideal solution for a wide variety of applications.

KF740
Core Technologies
DynO
SYMMETRY OF SOURCES
CONCENTRIC SUMMATION ARRAY (CSA)
PHASE ALIGNED LF
FOCUSING
Design + Build

Product Description

The KF740 delivers the premium, high output, 3-way performance that is the hallmark of the KF Series in an extremely compact and easy-to-use package. Dual 2.5-in voice coil HF compression drivers and dual 8-in Concentric Summation Array (CSA) loaded MF transducers are integrated through a common horn that occupies the entire face of the enclosure. The astounding pattern control offered by this configuration is extended down to 160 Hz as the MF devices are transitioned to a spaced array of four 2.5-in voice coil 10-in woofers. The pair of LF devices integrated within the MF/HF horn combined with the pair of side-mounted devices provides as much as 18 dB of off-axis rejection. EAW Focusing™ delivered via UX series processors precisely transitions from one system subsection to another while maintaining nearly perfect 90°control.

A full KF740 array provides seamless coverage from directly below the array to hundreds of feet in front. The vertical output can be tailored to match the requirements of any space by varying the splay angle as directed by EAW Resolution™ 2. The resultant configuration produces a coherent wave front of extended-range, high fidelity audio over the entire defined coverage area. The versatile KF740 can be integrated above KF730 modules or beneath KF760 modules to extend the reach of the range to any application imaginable. The impressive low frequency output and extension of the KF740 can be further enhanced by the use of the complementary SB2001 subwoofer. The truck-pack friendly KF740 is assembled in the USA with unrivaled construction details including cabinet grade exterior Baltic birch plywood enclosure, wear-resistant textured coating, powder-coated steel grille and extruded structural aluminum rigging.

Six year loudspeaker warranty.

KF LINE SOURCE VOICING UPDATE Leveraging data and experience from development of Adaptive Systems™ updated Greybox™ processing enhances performance of KF740, incorporating improved equalization, crossover, Focusing™ and limiting parameters for enhanced clarity and tonal balance without physical changes. The latest update also brings EAW DynO™ dynamic optimization (DynO enhancements require EAWPilot v1.2.23 or greater) to the KF740 for increased system protection at high levels, and unprecedented low-frequency headroom. Updated Greyboxes™ are available here.

  • Extremely high output to size & weight ratio. Size and output capabilities allow it to be used in the widest variety of venues
  •  Exceptional pattern control due to symmetrical design, large horn(s) and Phase-Aligned™ woofers
  •  Incorporates latest EAW technologies including CSA™ and Focusing™ for outstanding mid and high frequency transient response and DynO™ dynamic optimization for unprecedented low frequency transient response and headroom
  • Fully compatible with KF760 and KF730 systems.
The Details Matter

Specifications

Frequency Response
50hz – 19khz
Max SPL
146 dB
Operating Mode

Amplifier Channels: Tri-amp LF, MF, HF
External Signal Processing: DSP w/EAW Focusing

Subsystem

LF – 4x 10 in cone
MF – 2x 8 in. cone
HF – 2x 1.4 in. exit, 2.5 in. voice coil compression driver

Nominal Beamwidth
Horizontal: 90
Vertical: 12
Power Handling

LF: 700W @ 8ohms (2x)
MF: 625W @ 8ohms
HF: 200W @ 8ohms

Connections

NL8 Input/Loop

Dimensions

Height: 13 in (330.2 mm)
Width: 40.10 in (1018.5 mm)
Depth: 17.56 in (446 mm)

Weight

107.2 lbs (48.6 kg)

Training / Instruction

Videos

Add-on Options

Accessories

KF740 flybar, FB174 / 0033126
KF740 pallet, PLT74K / 0033466
KF740/KF730 to KF760 adapter bar / 2034117
KF740 to KF730 adapter bar, AB7473 / 0032870
KF740P Flybar, FB174P / 2036533
KF740 Fly Bar Ground Stack Kit / 0026787
KF740 Spare Pin, QRP2 / 0020558-02
Zero Degree Adapter, ACC-0DEGKF / 2039328
KF740 zero degree adapter use

Find the Right Speaker

Series Range

INSTALLATION LINE ARRAY

Subsystem

LF 2X 10in, 3.0in VC
MF 4X 5in, 1.7in VC
HF 2X 1.4in exit, 3in VC

Nominal Beamwidth

Horizontal – 110° or 80°
Vertical – 10°

Frequency

50 Hz to 20 kHz

Max SPL

145dB

PASSIVE 3-WAY FULL-RANGE LOUDSPEAKER

Subsystem

LF – 2x 10 in. cone
MF -1x 1.4 in. cone, 3.5 in. coil compression mid
HF – 3x.75 in. exit, 1.75 in voice coil compression driver

Nominal Beamwidth

Horizontal: 60
Vertical: 45

Frequency

64hz – 20khz

Max SPL

145 dB

PASSIVE 3-WAY FULL-RANGE LOUDSPEAKER

Subsystem

LF – 2x 10 in. cone
MF -1x 1.4 in. cone, 3.5 in. coil compression mid
HF – 3x.75 in. exit, 1.75 in voice coil compression driver

Nominal Beamwidth

Horizontal: 90
Vertical: 45

Frequency

64hz – 20khz

Max SPL

143 dB

3-WAY LINE ARRAY MODULE

Subsystem

LF – 2x 6 in. 1.75 in voice coil cone driver
MF – 2x 6 in. 1.75 in voice coil cone driver
HF – 6x 1 in. dome tweeter

Nominal Beamwidth

Horizontal: 110
Vertical: 12

Frequency

75hz – 19khz

Max SPL

132 dB

3-WAY LINE ARRAY MODULE

Subsystem

LF 2 x 10 in cone
MF 2 x 7 in cone (horn loaded)
HF 2 x 1 in exit, 1.75 in voice coil compression driver

Nominal Beamwidth

Horizontal: 110
Vertical: 12

Frequency

60hz – 19khz

Max SPL

142 dB

3-WAY LINE ARRAY MODULE

Subsystem

LF – 2x 10 in cone
MF – 2x 7 in. cone
HF – 2x 1 in exit, 1.75 in voice coil neodymium compression driver

Nominal Beamwidth

Horizontal: 75
Vertical: 12

Frequency

60hz – 19khz

Max SPL

142 dB

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