Acoustic Performance Partnership
Eastern Acoustic Works
KF400a
One Main Street, Whitinsville MA, 01588 USA • Phone 508/234-6158 • Toll Free 800/992-5013 • Fax 508/234-8251 • Web http://www.eaw.com • email [email protected]
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TECHNICAL SPECIFICATIONS
KF400a
EASTERN ACOUSTIC WORKS
One Main Street, Whitinsville, MA 01588 • (508) 234 - 6158 • FAX (508) 234 - 8251 • Email [email protected] • 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
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, transparent driver/amplifier protection circuitry
and signal processing.
EAW’s VA™ loudspeaker system design philosophy sets the
world standard for arrayabilty and performance by applying
advanced horn-loading concepts to the three-way loudspeaker
configuration. The cone-loaded midrange horn’s flare follows
a complex mathematical function (not straight lines) allow-
ing 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 sum-
mation of the wavefront in the horn throat, enhancing 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 reliability. State-of-the-art protection
systems - actuated by real-time current and voltage
monitors – apply complex compressor/limiters and soft
clipping circuitry for virtually transparent protection of both
the amplifier and the drivers, even when driven to the
highest output levels. Modular input design allows for 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 loud-
speaker system approach. Distributed amplifier/processor
racks and their associated logistical/compatibility problems
are eliminated from the design. Determine the appropriate
loudspeaker system placement to meet your application’s SPL
and coverage requirements, deliver audio and AC 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 components, four years on active electronics.
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
