EAW KF861 Technical Specifications

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TECHNICAL SPECIFICATIONS KF861

DESCRIPTION

A 3-way triamp full range system in a trapezoidal vertically
arrayable enclosure. Includes 2x 15-in woofers (“tuned” for
dipolar directivity), 2x horn-loaded 10-in midrange cones
and 2x 2-in exit compression drivers on separate 90 x 30
constant directivity horns.

APPLICATIONS

The KF861 Virtual Line Arr ay module is en gineer ed for use in
vertical arrays of n o less than three and as man y as 12 units.
DSP-driven Tuned Dipolar Array effects create outstanding
off-axis rejection to 100 Hz and below. Unique rigging sys­tem provides a new level of accuracy and repeatability. The
system of choice f or televised live events . Six year warranty.

Applications include:
Major Televised Events
Concert Tours

DESCRIPTIVE DATA

Part Number 999331

Product Group V

LF Subsystem & Loading 2x 15-in, Angled Baffles
MF Subsystem & Loading 2x 10-in Cone, Horn Loaded
HF Subsystem & Loading 2x 2-in Exit Compression Driver on

Constant Directivity Horn

System Configuration 3-way, Full Range

Powering Configuration(s) Triamplified Through MX Processor

Recommended High-Pass

Frequency (24 dB/Octave) 40Hz

Cabinet Type (shape) Horizontal Trapezoidal

Enclosure Materials Baltic Birch Plywood

Finish Black Catalyzed Polyurethane

Connectors One each male and female AP6

Grill Vinyl Coated Perforated Steel

NOMINAL DATA

Frequency Response (Hz)

±3 db 50Hz to 17kHz

-10 dB 40Hz

Axial Sensitivity (dB SPL/1 Watt/1m)

LF 102
MF 111
HF 113

Impedance (Ohms)

LF 4
MF 4
HF 5

Power Handling (Watts)

LF AES Standard 2000
MF AES Standard 800
HF AES Standard 400

KF861 shown in an array wih three KF860s.

Calculated Maximum Output (dB SPL, @ 1m)

LF Peak 141.0
MF Peak 146.0
HF Peak 145.0

LF Long Term 135.0
MF Long Term 140.0
HF Long Term 139.0

Nominal Coverage Angle / -6 dB points (degrees)

Horizontal 90

Vertical 30

Dimensions inches millimeters

Height (front) 18.5 470

Height (rear) 12.875 327

Width 72 1829
Depth 32 813

Trapezoid Angle 5 degrees per side

Weights pounds kilograms

Net Weight 363 165.2

Shipping Weight 375 170.6

EASTERN ACOUSTIC WORKS

One Main Street, Whitinsville, MA 01588 • (508) 234 - 6158 • FAX (508) 234 - 8251 • Email [e-mail] • Web http://www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. • PUB# KF861-888054 (A)/2 pp/1/29/99 • Printed In USA

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TECHNICAL SPECIFICATIONS KF861

DIMENSIONAL DRAWING ARCHITECTURAL SPECIFICATIONS

DIMENSIONAL DRAWINGS

1. ALL DIMENSIONS IN INCHES UNLESS OTHERWISE NOTED.

KF861

2. CENTER OF GRAVITY

3. CABINET IS SYMMETRICAL ABOUT CENTER LINE DESIGNATIONS.

4. 3" FLY STRIP.

5. TOP AND BOTTOM ARE IDENTICAL EXCEPT RUNNERS PROTRUDE 1/4" ON
BOTTOM, AND RUNNER MATING CHANNELS ARE RECESSED 1/8" ON TOP.

6. BUILT-IN HANDLES (2 PLACES EACH SIDE).

7. BUILT-IN RIGGING ATTACHMENT POINTS (2 PLACES EACH SIDE).

18.49

9.24

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L

72.00

FRONT

4.41

10°

.25

SEE NOTE 6

A

32.00

17.11

510336
EXP 3/9/97 SHB

19.87 4.50 SQ. TYP.

SEE NOTE 7

SIDE

TOP

( BOTTOM SEE NOTE 5)

12.88

A

2.07 2X

6.44

RUNNERS, SEE NOTE 5

10.81
TYP

13.22
TYP

7.21

6.44 TYP

33.97

BACK

VIEW A-A

SERVICE ITEMS

LF: Complete Cone Dirver

EAW Part No. 804036

MF: Complete Cone Driver

EAW Part No. 804022

HF: Complete Compression Driver/Tweeter

EAW Part No. 803011

Filter/Crossover Network: Complete Assembly

EAW Part No. 201499

7.69

44.69

INPUT

15.80

4.30

4.32

4.25

The three-way full ran g e lou dspeak er system s shall incorpo­rate 2x 15-in LF transducers, 2x 10-in cone MF transducers
and 2x 2-in exit compression driver HF transducer.

The LF drivers shall be separated by a “tun ed” distan ce that
uses the Tuned Dipolar Array effect to achieve optimal low
frequency pattern control. Each MF driver shall be loaded
into a midr an g e h orn constructed of 3mm birch plywood re­inforced with high density polyurethane foam. The MF horn
shall incorporate a phase/displacemen t plug. Each HF driver
shall be loaded on a constant directivity horn with a nomi­nal coverage pattern of 90° (h) x30° (v).

System frequency response shall vary no more than ±3 dB
from 50 Hz to 17 kHz measured on axis. The low frequency
section shall produ ce a Sound Pressure Level (SPL) o f 102 dB
SPL on axis at 1 meter with a power input of 1 Watt, and
shall be capable of producing a peak output of 141 SPL on
axis at 1 meter . It shall handle 2000 W atts of amplifier power
(AES Standard) and shall have a nominal impedance of 4
Ohms. The mi drang e frequency section shall pr oduce a Sound
Pressure Level (SPL) of 111 dB SPL on axis at 1 m eter with a
power input of 1 Watt, and shall be capable of producing a
peak output of 146 SPL on axis at 1 meter. It shall handle
800 Watts of amplifi er power (AES Stan dard) and shall have
a nominal impedan ce of 4 Ohms . The hi gh frequen cy section
shall produce a Soun d Pressure Level (SPL) o f 113 dB SPL on
axis at 1 meter with a power input of 1 Watt, and shall be
capable of producing a peak output of 145 SPL on axis at 1
meter. It shall handle 400 Watts of amplifier power (AES
Standard) and shall have a nominal impedance of 5 Ohms.

The loudspeaker enclosure shall be trapezoidal in shape. It
shall be constructed of 15mm thi ckness void-free cr oss-grain­laminated Baltic birch plywood and shall employ extensive
internal bracin g. It shall be finished in black catalyzed poly­urethane. Input connectors shall be one each male and fe­male AP6. The enclosur e shall includ e oval steel tubing (on e
tube on each side) that accepts steel linking plates. The
plates shall attach to the steel tubing with quick-release
pins which shall be inclu ded. Suffici ent precisely ali gned pin
holes shall be placed in the steel tubing and linking plates
to allow for a variety of arraying angles and spacing. The
front of th e loudspeaker shall be cover ed with a vinyl coated
perforated steel grill backed with open cell foam to protect
against dust.

The three-way full ran ge loudspeaker shall be th e EAW m odel
KF861.

Acoustic Performance Partnership Eastern Acoustic Works KF861

One Main Street, Whitinsville MA, 0158 8 USA • Phone [phone] • Toll Free 800/992-5013 • Fax [phone] • Web http://www .eaw.com • email [e-mail]