K F 8 5 0 z R S p e c i f i c a t i o n s

p r e l i m i n a r y

group · S

 

 

 

FEATURES

Tri-amplified VA™ 3-way full-range system

Touring industry standard

Stackable version without fly-track hardware; 20% weight savings

Companion SB850zR subwoofer

3-WAY FULL-RANGE TRI-AMP

See TABULAR DATA notes for details

CONFIGURATION

Subsystem

Transducer

Loading

LF

1x

15 in cone

Horn-loaded

MF

1x

10 in cone

Horn-loaded

 

 

 

Radial Phase Plug™

HF

1x

2 in exit, 3 in voice

Horn-loaded

 

coil neodymium compression driver

Operating Mode

AmplifierChannels

ExternalSignalProcessing

Tri-amp

LF, MF, HF

DSP w/3-way filters

PERFORMANCE 1

Operating Range

75 Hz to 20 kHz

 

Nominal Beamwidth

 

 

Horz

55°

 

Vert

40°

 

Axial Sensitivity (whole space SPL)

 

LF

101 dB

75 Hz to 250 kHz

MF

109 dB

250 Hz to 1050 Hz

HF

112 dB

1050 Hz to 20 kHz

 

 

Peak Sensitivity (whole space SPL)

 

LF

106 dB

20 Hz to 20 kHz

MF

111 dB

20 Hz to 20 kHz

HF

116 dB

20 Hz to 20 kHz

Input Impedance (ohms)

 

LF

Nominal

Minimum

8

7.7 @ 120 Hz

MF

8

9.7 @ 1000 Hz

HF

8

9.2 @ 5010 Hz

Recommended High Pass Filter

 

High Pass

=>40 Hz, 24 dB/octave

 

DESCRIPTION

Accelerated Life Test 2

The KF850 Series has been the touring system standard for well over ten years, being acceptable in more technical riders than any other loudspeaker. The KF850z incorporates a number of advances in loudspeaker technology and performance developed over that time by EAW Engineers. The result is a KF850 with higher impact and fidelity than ever before.

Legendary KF850 performance is enhanced with a neodymium, Orbital Magnet Array™ HF driver offering increased surface area for better cooling, and higher reliability. A new HF horn extends HF response and fidelity while minimizing throat distortion. The critical MF subsystem is based on EAW's Radial Phase Plug™ design used in the KF650, KF750, and KF760. An optional user-installed, passive MF/HF crossover kit allows more economical, bi-amplified operation.

The KF850z's advanced performance will not be sonically compatible with exsiting KF850E inventories. To facilitate integration, kits are available to upgrade them to the KF850z. The KF850z's enclosure is fully compatible with the KF850E Series. However, the "z" enclosures incorporate a stacking pad on top that mates with a recess in the bottoms. KF850z DSP processor settings are available online for EAW's MX8750 as well a select group of other popular touring processors.

KF850 Series applications continue to include: concert tours, corporate events, large theaters, stadiums, cathedrals, large live music clubs. Six year warranty.

LF

75 V

700 W @ 8 ohm

MF

56 V

400 W @ 8 ohm

HF

40 V

200 W @ 8 ohm

Calculated Axial Output Limit (whole space SPL)

AveragePeak

LF

129 dB

135 dB

MF

135 dB

141 dB

HF

135 dB

141 dB

ORDERING DATA

Description

Part Number

KF850zR Black

0007587

Optional Accessories

 

KF850z/SB850z caster pallet

0007683

KF850z/SB850z caster pallet kit

0008835

KF850z bi-amp crossover kit*

0007951

KF850z upgrade kit [AP6]

0006241

KF850z upgrade kit [NL8]

0006242

*The bi-amp crossover kit can only be used on a factory-built KF850z. It cannot be used on a KF850 originally manufactured as an “E” series and later upgraded to a KF850z.

1To achieve specified performance, the listed external signal processing with EAW-provided settings is required.

2For recommendations to select power amplifier size refer to : “HOW MUCH AMPLIFIER POWER DO I NEED?” on the EAW web site.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel 800 992 5013 / 508 234 6158 fax 508 234 8251 www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice.

PRELIMINARY January 2004

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EAW KF850zR specifications Features, Way Full-Range Tri-Amp, Description

KF850zR specifications

The EAW KF850zR is an advanced loudspeaker designed to meet the high demands of modern sound reinforcement applications. Known for its impressive performance and versatility, the KF850zR provides a powerful solution for both permanent installations and portable sound systems.

One of the main features of the KF850zR is its high-output capability. The loudspeaker is equipped with a dual 15-inch low-frequency driver, which offers exceptional bass response and clarity. This allows the KF850zR to achieve deep low-end frequencies without distortion, making it suitable for various music genres and sound applications. The high-frequency section consists of a 2-inch exit compression driver, which delivers precise and articulate highs, ensuring that vocals and instruments are clear even at high sound pressure levels.

The KF850zR employs advanced technologies to enhance its performance. It utilizes a unique horn design that optimizes impedance and improves dispersion patterns. This design ensures that sound is evenly distributed across the audience, creating an immersive listening experience. Additionally, the loudspeaker features a sophisticated crossover network that accurately divides frequencies between the high and low drivers, allowing for seamless integration and enhanced overall sound quality.

Another notable characteristic of the KF850zR is its robust construction. The cabinet is made from durable plywood, coated with a weather-resistant finish, ensuring longevity and protection against the elements for outdoor events. The speaker also includes integrated rigging points, which facilitate easy setup and deployment in various configurations.

The KF850zR is designed with versatility in mind. Its compatibility with various amplification systems makes it suitable for both touring and installed applications. The loudspeaker can be used in arrays, allowing for scalable sound reinforcement in larger venues. It also includes an optional input panel that provides flexibility for different input sources.

Overall, the EAW KF850zR stands out as a powerful and reliable loudspeaker that meets the demands of professional audio engineers and sound designers. With its high output, advanced technologies, and robust design, it is an ideal choice for a wide range of audio applications, delivering exceptional sound quality and performance that will satisfy even the most discerning audiences.