EAW KF400a Technical Specifications

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TECHNICAL SPECIFICATIONS KF400a

DESCRIPTION

The KF400a Powered Virtual Array™ Loudspeaker System
optimizes performance and reliability for a wide range of
portable and permanently-installed sound reinforcement
applications. The internal Close Coupled Power Module
provides ample distortion-free amplification as well as
sophisticated, tran sparent driver/amplifier pr otection circuitry
and signal processing.

EAW’s VA™ loudspeaker system design philosophy sets the
world standard for arrayabilty and performance by applying
advanced horn-loading con cepts to the three-way loudspeaker
configuration. Th e cone-loaded mid range h orn’s flare follows
a complex mathem atical fun cti on (n ot str ai ght lin es) allow­ing for smooth expansion of the wavefront. The newly
designed phase plug – the first example of EAW’s next
generation of phase plug designs – ensures coherent sum­mation of th e wavefron t in the h orn throat, enhan cin g both
the smooth sound character and arrayability of the system.

CLOSE COUPLED POWER

™

The Close Coupled Power concept integrates amplification
with the loudspeaker system to maximize performance,
reliability and efficiency. Precisely matching the amplifier
design to the specific system’s driver/horn/enclosure
characteristics provides a substantial amount of headroom
without compromising r eliability . State-of-the-art protecti on
systems - actuated by real-time current and voltage
monitors – apply complex compressor/limiters and soft
clipping circuitry for virtu ally transparen t protection o f both
the amplifier and the drivers, even when driven to the
highest output levels. M odular input design allows f or future
system upgrades.

Authorized service professionals can access many elements
of the Close Coupled Power Module simply by removing the
back panel. When necessary the CCPM can be removed as a
self-contained unit.

APPLICATIONS

The KF400a provides the greatest user-benefit to sound
reinforcement applications utilizing the distributed loud­speaker system approach. Distributed amplifier/processor
racks and their associ ated logistical/compatibility pr oblems
are eliminated from the design. Determine the appropriate
loudspeaker system placemen t to meet your application’s SPL
and coverage r equir ements, d eliver audio and A C feeds , and
enjoy the results. The loop-through audio chain allows for
the immediate creation of arrays from a single audio feed.

The KF400a features a six year warranty on loudspeaker
enclosure and compon ents , four years on active electr oni cs.

Applications include:

Corporate Events Convention Centers
Ballroom Events Band PA
Small Worship Spaces Live Music Club

DESCRIPTIVE DATA

Configuration 3-way, Full Range

Powering Internal/Biamplified (passive LF/

MF crossover)

LF Subsystem 1x 15-in, Vented
MF Subsystem 1x 8-in Cone, Horn-Loaded
HF Subsystem 1x 1.4-in exit/75mm voice coil

Compression Driver on Constant
Directivity Horn

Coverage Angles 65° (h) x 45° (v)

Cabinet Type (shape) Trapezoidal

Enclosure Materials Baltic Birch Plywood

Finish Black Polyurethane

Connectors 1x Neutrik PowerCon (AC mains);

XLR female (audio input); XLR male
(audio output) Pin 2 Hot

Suspension Hardware (5) 3-Position Flytracks with

Integral 3/8"-16 Threaded
Mounting/Suspension Points
(2 top and 3 bottom)

Grill Vinyl Coated Perforated Steel

Options Flyclip w/Ring (179001)

Flyclip w/Hook (179002)

Dimensions inches millimeters

Height 36.50 927

Width (Front) 19.75 502

Width (Rear) 12.79 325

Depth 19.75 502

Trapezoid Angle 10° per side

Weights pounds kilograms

Net Weight 160 72.7

Shipping Weight 168 76.4

EASTERN ACOUSTIC WORKS

Acoustic Performance Partnership Eastern Acoustic Works KF400a

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]

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# KF400a-888045 (A)/4 pp/1/29/99 • Printed In USA

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CLOSE COUPLED POWER™ MODULE

TECHNICAL SPECIFICATIONS KF400a

Fault LED

Indicates that protection
circuitry has shut down the
unit to avoid damage to
drivers or electronic d evices.

Power ON LED

Indicates that the unit is
powered and ready for
operation.

HF/LF Output Current LEDs

Indicates output curren t f or
both the high and low
amplifier channels.

HF/LF Limit LEDs

Indicates that protection
circuitry is actively limiting
output to protect the
drivers or electronic
components.

CIRCUIT BREAKERS

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MAINS SUPPLY

Operating voltage range:

WARNINGS:
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE.
THIS SURFACE MAY BECOME HOT WHILE
THE UNIT IS OPERATING. ALLOW AT LEAST 6
INCHES CLEARANCE FROM THIS SURFACE
AND ADEQUATE VENTILATION TO ENSURE
RELIABLE OPERATION.

CAUTION: TO PREVENT ELECTRIC SHOCK
DO NOT REMOVE COVERS. NO USER
SERVICEABLE PARTS INSIDE. RREFER TO
QUALIFIED SERVICE PERSONNEL.
DISCONNECT AC POWER BEFORE
ATTEMPTING SERVICE OR CONFIGURATION.

Power ON

HF Output Current

LF Output Current

Fault

HF Limit

LF Limit

Turn on 85VAC, turn off 260VAC

UNLOCK LOCK

AC INLET

PUSH

CLOSE COUPLED

POWER MODULE

Whitinsville, MA U.S.A.

PUSH

TO

RESET

95-250VAC

50-60Hz
8A RMS

16A Peak

PIN 2=POS (+),
PIN 3=NEG (-)
PIN 1=GND ( )

Circuit Breakers

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The AC Circuit Breakers
protect the unit from power
line faults and electronics
failure.

AC Input

Neutrik PowerCon lockin g AC
connector provid es AC power
connection. Auto-sensing
power input operates from
95-125 VAC and 190-250
VAC.

Audio Signal Input

A balanced, 3-pin, female
XLR connector is provid ed for

LOOPINPUT

the audio signal input
connection.

Audio Signal Loop Output

A balanced, 3-pin, male XLR
connector provides a
hardwired loop out of the
input signal.

Rear Exhaust Grills

The fan exhaust grills ar e the
main exits for air dr awn into
the unit for cooling. Avoid
blocking air flow.

Acoustic Performance Partnership Eastern Acoustic Works KF400a

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]

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

MADE IN USA