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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

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

group · S

p r e l i m i n a r y

FEATURES

• 

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

• 

Touring industry standard

• 

Flyable version with fly-track hardware 

• 

Companion SB850zR subwoofer

DESCRIPTION

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 and rigging hardware are 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.

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

Amplifier Channels

External Signal Processing

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)

Nominal

Minimum

LF 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

Accelerated Life Test 

2

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)

Average

Peak

LF 129 dB

135 dB

MF 135 dB

141 dB

HF 135 dB

141 dB

ORDERING DATA

Description

Part Number

KF850zF Black

0006816

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

Fly clip w/ ring

0001386

Fly clip w/ hook

179001

* 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.

1

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

2

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

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