EAW KF850zR User Manual

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. PRELIMINARY January 2004

KF850zR Specifications group · S

preliminary

FEATURES

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

• Touring industry standard

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

• 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 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.

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

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.

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.

Eastern Acoustic Works One Main Street Whitinsville, MA 01588 tel [phone] fax [phone] www.eaw.com

EAW products are continually improved. All specifications are therefore subject to change without notice. PRELIMINARY January 2004

KF850zR Specifications group · S

preliminary

ENCLOSURE

Material Baltic birch plywood

Finish Wear resistant textured black paint

Grille Powder-coated perforated steel

NOTE: This drawing has been reduced. Do not scale.

(16.50)

4.00

15.75

C

L

9.25

8.50

A

29.50

NOTES:

1. SYMBOL INDICATES CENTER OF BALANCE.

2. WEIGHT APPROX. 206 LBS.

3. SHIPPING WEIGHTAPPROX. 228 LBS.

19°

TOP

DIMENSIONS APPLY

TOTOP AND BOTTOM

GRILLE PARTIALLY SHOWN

26.37

42.37

42.00

FRONT

A

2X 22.10

4X 10.81

2X 27.28

4X 6.44

2X 5.22

2X 3.28

C

L

ACCESS PANEL

8X HANDLE

21.00

INPUT

16.10

6.50

C

L

3.50

VIEW A-A

DIMENSIONS APPLY

TO BOTH SIDES

PALLET RECESS4.25

C

L

BOTTOM ONLY

9.50

BACK

BOTTOM

11.62

KF850zR

PRODUCTION

EASTERN ACOUSTIC WORKS