EAW Virtural Array KF850ZF User manual

EasternAcoustic Works One Main Street Whitinsville, MA01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. RD0165 (A) KF850zF SPEC February 2004
KF850zF Specifications group · S
FEATURES
•Tri-amplifiedVA™ 3-way full-rangesystem
•Touringindustrystandard
•Flyableversionwithfly-trackhardware
•CompanionSB850zRsubwoofer
DESCRIPTION
The KF850 Series has been the touring system standard for well
over ten years, being acceptable in more technical riders than any
otherloudspeaker.TheKF850zincorporatesanumberofadvances
in loudspeaker technology and performance developed over that
time by EAW Engineers. The result is a KF850 with higher impact
andfidelitythaneverbefore.
Legendary KF850 performance is enhanced with a neodymium,
Orbital MagnetArray™ HF driver offering increased surface area for
better cooling, and higher reliability. A new HF horn extends HF
responseandfidelitywhileminimizingthroatdistortion.ThecriticalMF
subsystem is based on EAW's Radial Phase Plug™ design used in
the KF650, KF750, and KF760. An optional user-installed, passive
MF/HFcrossoverkitallowsmoreeconomical,bi-amplifiedoperation.
The KF850z's advanced performance will not be sonically
compatible with existing 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
stackingpadon top that mates with a recess in the bottoms. KF850z
DSP processor settings are available online for EAW's MX8750 as
wellaselectgroupofotherpopulartouringprocessors.
KF850 Series applications continue to include: concert tours,
corporate events, large theaters, stadiums, cathedrals, large live
musicclubs.Sixyearwarranty.
3-WAY FULL-RANGE TRI-AMP
See TABULAR DATAnotes for details
CONFIGURATION
Subsystem Transducer Loading
LF 1x 15incone Horn-loaded
MF 1x 10incone Horn-loaded
Radial Phase Plug™
HF 1x 2inexit,3invoice Horn-loaded
coilneodymiumcompressiondriver
Operating Mode AmplifierChannels ExternalSignalProcessing
Tri-amp LF,MF,HF DSPw/3-wayfilters
PERFORMANCE 1
Operating Range 70Hz to20kHz
Nominal Beamwidth
Horz 55°
Vert 40°
Axial Sensitivity (wholespaceSPL)
LF 101dB 70Hzto275kHz
MF 110 dB 275Hzto1050Hz
HF 111dB 1050Hzto20kHz
Peak Sensitivity (wholespaceSPL)
LF 104dB 20Hzto20kHz
MF 111dB 20Hzto20kHz
HF 117 dB 20Hzto20kHz
Input Impedance (ohms)
Nominal Minimum
LF 8 7.7@120Hz
MF 8 9.7@1000Hz
HF 8 9.2@5010Hz
Recommended High Pass Filter
HighPass =>60Hz,24dB/octaveButterworth
Accelerated Life Test 2
LF 75V 700W@8ohm
MF 56V 400W@8ohm
HF 40V 200W@8ohm
CalculatedAxial Output Limit (whole spaceSPL)
Average Peak
LF 129dB 135dB
MF 136dB 142dB
HF 134dB 140dB
ORDERING DATA
Description Part Number
KF850zFBlack 0006816
OptionalAccessories
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.
1To achievespecifiedperformance, thelistedexternal signalprocessingwith EAW-provided settings isrequired.
2Forrecommendations toselectpower amplifiersizerefer to: “HOWMUCHAMPLIFIERPOWER DOINEED?” ontheEAWweb site.

EasternAcoustic Works One Main Street Whitinsville, MA01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. RD0165 (A) KF850zF SPEC February 2004
KF850zF Specifications group · S
ENCLOSURE
Material Balticbirchplywood
Finish Wearresistant texturedblackpaint
Grille Powder-coatedperforatedsteel
3.50
16.10
21.50
6.50
42.00
42.37
VIEW A-A
PRODUCTION
DIMENSIONS APPLY
TO BOTH SIDES
9.50
BOTTOM
8.38
PALLET RECESS
FRONT
4.25
L
C
BOTTOM ONLY
KF850zF
EASTERN ACOUSTIC WORKS
BACK
2X 22.10
4X 6.44
NOTES:
1. SYMBOL INDICATES 19.00 X 1.35
FLYTRACK.
2. SYMBOL INDICATES CENTER OF BALANCE.
3. WEIGHT APPROX. 247 LBS.
4. SHIPPING WEIGHT APPROX. 270 LBS.
2X 19.25
8.50
16.00
29.50
2X 2.27
2X 7.43 19°
A
A
GRILLE PARTIALLY SHOWN
DIMENSIONS APPLY
TO TOP AND BOTTOM
26.37
TOP
2X 3.28
2X 5.22
4X 10.81
2X 27.28
L
C
(16.50)
9.25
4.00
L
C
INPUT
ACCESS PANEL
8X HANDLE L
C
NOTE: Thisdrawinghas beenreduced.Donotscale.

EasternAcoustic Works One Main Street Whitinsville, MA01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. RD0165 (A) KF850zF SPEC February 2004
KF850zF Specifications group · S
PERFORMANCE DATA See NOTES GRAPHIC DATANotes for details
Frequency Response: Processed Tri-amplified
LF = green MF = Black HF = orange Complete = blue
SPL(dB)
Frequency Response: Unprocessed
LF = green MF = Black HF = orange
SPL(dB)
Frequency Response: Digital Signal Processor
LF = green MF = Black HF = orange
dB re 0.775 V
Beamwidth (-6 dB SPL Points)
Horizontal = orange Vertical = black
Degrees
Impedance Magnitude
LF = green MF = Black HF = orange
Ohms
120
110
100
90
80
70
60
100
10
1
400
100
10
1100 1000 20000
Frequency(Hz)
10 100 1000 20000
Frequency (Hz)
120
110
100
90
80
70
60
20
10
0
-10
-20
-30
-40
10 100 1000 20000
Frequency (Hz)
10 100 1000 20000
Frequency (Hz)
10 100 1000 20000
Frequency (Hz)

EasternAcoustic Works One Main Street Whitinsville, MA01588 tel [phone] fax [phone] www.eaw.com
EAW products are continually improved. All specifications are therefore subject to change without notice. RD0165 (A) KF850zF SPEC February 2004
KF850zF Specifications group · S
INPUT PANEL
KF850zF
WHITINSVILLE, MA USA S/N
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENTS: 5,996,728; 6,009,182; 6,016,353; 6,094,495; 6,118,883
PIN 1--...NC
PIN 1+...NC
PIN 2--...LOW--
PIN 2+...LOW+
PIN 3--...MID--
PIN 3+...MID+
PIN 4--...HIGH--
PIN 4+...HIGH+
NEUTRIK
NL8 MPR
NEUTRIK
NL8 MPR
NOTES
TABULARDATA
1. PrimaryMeasurement/DataProcessingSystem: FChart:proprietary EAWsoftware.
2. SecondaryMeasurement System: Brüel &Kjær2012.
3. MicrophoneSystems: EarthworksM30; Brüel&Kjær4133
4. Measurements: DualchannelFFT;length: 32768samples;samplerate: 48kHz;logarithmicsinewave sweep.
5.Measurement System Qualification(includesalluncertainties):SPL:accuracy+/-0.2 dB@1kHz,precision +/-0.5 dB20Hzto 20 kHz,resolution0.05dB;Frequency: accuracy+/-1%,
precision+/-0.1Hz,resolution the largerof1.5Hzor1/48octave;Time:accuracy+/-10.4 µs,precision+/-0.5µs, resolution 10.4µs;Angular:accuracy+/-1°,precision+/-0.5°,resolution0.5°.
6. Environment: Measurementstime-widowedandprocessed toeliminate room effects,approximatingananechoic environment. Dataprocessedas anechoicor fractionalspace,asnoted.
7. MeasurementDistance: 7.6to8.0m. Datais referencedto other distancesusingthe InverseSquareLaw.
8. Volts: Measuredrmsvalue ofthe test signal.
9. Watts: Peraudioindustrypractice, “loudspeakerwatts”are calculated asvoltagesquared dividedbyrated nominalimpedance. Thus, thesearenotTrueWattunitsofenergyasdefined by
InternationalStandard.
10. SPL: (SoundPressureLevel) Equivalentto the averagelevel ofasignal referencedto 0 dBSPL=20 microPascals.
11.Subsystem: Thisliststhe transducer(s)andtheir acousticloading for eachpassband.Sub =Subwoofer,LF=LowFrequency,MF= MidFrequency,HF= HighFrequency.
12.Operating Mode: User selectableconfigurations.Betweensystemelements,acomma(,)= separateamplifierchannels;a slash (/) =singleamplifierchannel.DSP=DigitalSignalProcessor.
IMPORTANT:Toachievethespecified performance,the listed externalsignal processing mustbe usedwith EAW-providedsettings.
13.Operating Range: Range wherethe processed FrequencyResponse stayswithin-10dB SPLofthepoweraveraged SPLwithinthisrange;measured on the geometric axis.Narrow band
dipsareexcepted.
14.Nominal Beamwidth: Designanglefor the-6 dB SPLpoints,referencedto0dB SPLasthehighestlevel.
15.AxialSensitivity: PoweraveragedSPLovertheOperating Rangewith an inputvoltagethat would produce1 Wat the nominalimpedance; measured with no externalprocessing onthe
geometricaxis,referenced to1 m.
16.Peak Sensitivity: Highestaxial SPLmeasuredwithin the20Hz to20 kHz bandpasswithaninput voltagethatwouldproduce 1W at thenominal impedance;measured with noexternal
processingonthe geometricaxis, referenced to1 m.
17.Nominal Impedance: Selected 4,8, or 16ohm resistancesuchthatthe minimumimpedance point isno morethan20% belowthis resistance over theOperating Range.
18.AcceleratedLifeTest: Maximumtestinputvoltageapplied withan EIA-426B definedspectrum; measured withrecommended signalprocessing and RecommendedProtection Filter.
19.CalculatedAxialOutput Limit: Highest average andpeak SPLspossibleduring theAcceleratedLifeTest. ThePeakSPLrepresentsthe2:1(6 dB)crest factor ofthe LifeTestsignal.
20.Recommended High Pass Filter: This should beused tohelpprotect theloudspeaker from excessiveinput signallevelsbelow theOperating Range.
GRAPHICDATA
1.Resolution:To removeinsignificantfine details,1/12octavecepstralsmoothing was appliedto acousticfrequencyresponse and1/3 octave cepstralsmoothingwas applied tothe
beamwidthandimpedancedata. Othergraphs areplotted using rawdata.
2.Frequency Responses: The variationinacoustic outputlevel with frequencyfor aconstantinputsignal of2 volts (4 ohmnominal impedance),2.83 volts (8 ohmnominal impedance),
or4volts(16 ohmnominal impedance) referencedto adistanceof1 m.For processed systems,this applieswherethe processorgain is0dB inthe Processor FrequencyResponse graph.
3.Processor Response: The variationinoutput levelwith frequency fora constantinputsignal of 0.775V = 0dB reference.
4.Beamwidth:Averageangleforeach 1/3octavefrequencyband where,startingfrom the rearof theloudspeaker,the outputfirst reaches -6dB SPLreferenced to0 dBSPLasthehighest
level.Thismethodmeans theoutputmay dropbelow -6 dBSPLwithinthe beamwidth angle. Referencedto 20 m.
5.Impedance: Variationin impedance magnitude,in ohms,withfrequency withoutregard to voltage/currentphase.Thismeans the impedancevalues maynot
beusedto calculateTrueWatts(see9above).
3-Way, Tri-Amp (LF, MF, HF)
AMP
AMP
AMP LF
MF
HF
DSP
EQ
DELAY
HPF/LPF
SIGNAL DIAGRAM
LEGEND
DSP: User-supplied Digital Signal Processor for EQ, crossover, and delay.
HPF: High Pass Filter for crossover or Recommended High Pass Filter.
LPF: Low Pass Filter for crossover.
LF/MF/HF: Low Frequency / Mid Frequency / High Frequency.
AMP: User-supplied PowerAmplifier.
XVR: Passive LPFs, HPFs, and EQ integral to the loudspeaker.