EAW KF761 User Manual

SPECIFICATIONS KF761

DESCRIPTION

APPLICATION

PERFORMANCE

One Main Street, Whitinsville, MA 01588 508 234 6158 Toll Free 800 992 5013 FAX 508 234 8251 info@eaw.com www.eaw.com EAW products are continually improved. All specifications are therefore subject to change without notice. KF761/0002963/2 pp April 2002 Printed in USA

The KF761 is part of the KF760 Line Array Series. The KF760 Series uses advanced divergence shading where all loudspeakers are powered at equ al level. A full KF760/KF761 arr ay can provide uniform sound coverage from directly beneath itself out to hundreds of feet without complex signal processing. Vertical coverage for the array is set by varying the splay of the rear of the enclosures, leaving the fronts tightpacked. This configuration produces a continuous, coherent wavefront from th e array, projectin g exten ded ran ge , high r esolution sound over its full coverage area.

Fully professional construction features include Baltic birch plywood enclosures, heavy-duty steel grilles, Neutrik NL8 connectors, heavy duty bar handles, rear hand-holds, and accessory caster pallets. Six Year Warranty.

This high output touring system is scalable from theaters under 1,000 seats to stadiums. The KF761 has two applications. KF761s are designed to supplement KF760s in an array to provide n ear-fi eld cover ag e f or distan ces less than 70 feet. The KF761 can also be used as part of a KF761-only array for applications with coverage distances up to about 100 feet. The minimum KF761 array size is four enclosures for full performance. When used with KF760s they can be used singly or in multiples depending on the coverage needed. For extending the low frequency response, KF940 bent horn subwoofers are an ideal complement to KF761s or a KF760 Series array.

Applications include: Arenas Convention Centers Large Ballrooms

Stadiums Theaters Music Pavilions Auditoriums Outdoor Events

Frequency Response (Hz)

±3 dB (1) Enclosure Array 80 Hz to 16 kHz ±3 dB (4) Enclosure Array 60 Hz to 16 kHz

Axial Sensitivity (dB SPL, 1 Watt @ 1m)

LF Single Enclosure 96 MF Single Enclosure 107 HF Single Enclosure 112

Impedance (Ohms)

LF 2x 8 MF 8 (2@16 Ohm each) HF 8

Power Handling (Watts Continuous)

LF 2000 MF 500 HF 150

Recommended High-Pass Frequency

24dB/Octave 40 Hz

Calculated Maximum Output (dB SPL @ 1m) Single Enclosure

LF Peak 135 MF Peak 1407 HF Peak 140

LF Long Term 129 MF Long Term 134 HF Long Term 134

Nominal Coverage Angle, -6 dB points (degrees)

Horizontal 100

Maximum Vertical Splay 12

Product Group S

System Configuration 3-way, full range

Powering Tri-amplified

LF Subsystem 2x 12-in woofers, horn-loaded

MF Subsystem 2x 8-in cone, slot-loaded

HF Subsystem 2-in exit/3-in voice coil com

pression driver, horn-loaded

Enclosure (shape) Horizontal trapezoid

Enclosure Materials Exterior grade Baltic birch

plywood

Finish Wear-resistant black textured

paint

Connectors 2x Neutrik NL8

Suspension Hardware Proprietary EAW rigging system

Grille Powder coated perforated steel

Dimensions inches millimeters

Front Height 14.5 368

Rear Height 8.3 210

Width 45.0 1143

Depth 30.8 784

Trapezoid Angle 6 degrees top and bottom

Weights pounds kilograms

Net Weight 206 93.4

Shipping Weight 214 97.1

PHYSICAL

SPECIFICATIONS KF761

DIMENSIONAL DRAWING

A & E SPECIFICATIONS

SYMBOL INDICATES CENTER OF BALANCE.

FRONT

14.50

43.00

45.00

3X GRILLES PARTIALLY SHOWN

2X .18 X 24.00

RUNNERS

BACK

2X HANDLES

2X 6.50

4.50 ACCESS PANEL

3.62

21.00

6.62

INPUT

RIGHT SIDE

DIMENSIONS APPLY TO BOTH SIDES

8.02

8.61

4X HANDLES

7.94

6.96

11.44

29.60

12°

4X .875 SQ

TOP

DIMENSIONS APPLY TO

TOP AND BOTTOM

1.25

1.50

2X STACK PAD POCKET

24.50

30.85

ACCESS PANEL TOP ONLY

15.00

4X EAW PROPIETARY RIGGING SYSTEM

509148 (0) 6/28/01

The tri-amplified, three-way full range loudspeaker system shall incorporate 2x 12-in LF transducers, 2x 8-in slot-loaded cone transducers and a 2-in exit/3-in voice coil compression driver, also horn-loaded.

The LF transducers shall each be loaded into a proprietary bent-horn, with the horn mouths horizontally separated to provide controlled off-axis cancellations to match the MF beamwidth through the crossover region. The MF transducers shall both be coupled into a single large format horn. The HF transducer shall be coupled to an HF horn coaxially mounted with, and extended by, the MF horn. The system shall have a nominal dispersion pattern of 100° (h) when used as part of a KF760 or KF761 line array.

System frequency response shall vary no more than ±3 dB from 80Hz to 16kHz measured on axis. The single loudspeaker’s subsystems (LF/MF/HF) shall produce Sound Pressure Level (SPL) of 96/107/112 dB SPL on axis at 1 meter with a power input of 1 Watt, and shall be capable of producing a peak output of 135/140/140 dB SPL on axis at 1 meter. The subsystems (LF/MF/HF) shall handle 2000/500/150 Watts of amplifier power (continuous) and shall have nominal impedances of 2x 8/8/8 Ohms.

The loudspeaker enclosure shall be trapezoidal in shape. It shall be constructed of void-free cross-grain-laminated Baltic birch plywood and shall employ extensive internal bracing. It shall be finished in wear-resistant te xtur ed black paint. Input connector shall be a Neutrik NL8 with an additional NL8 provided for connect through. Proprietary rigging is provided for arraying. The front of the loudspeaker shall be covered with a powder coated perforated steel grille.

The tri-amplified, three-way full range loudspeaker system shall be the EAW model KF761.

Manufacturing tolerances are +/- 0.13 and +/- 1°

12°