EAW SB250zR 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. Part Number: RD0227 (A) SB250zR April 2005
SB250zR Specifications group · J
DESCRIPTION
The SB products are EAW's premium subwoofers designed for
the most demanding professional applications.Abroad range of
capabilities and sizes provide the designer with selections that
can be specifically matched to their application. Top quality
drivers,engineeredbyEAW,providethehighestoutputandbest
sonic performance possible for a given form factor. All SB
models are direct radiating, with optimally tuned, vented
enclosures. SB subwoofers are the choice where the best sonic
performance, highest reliability, and most robust physical
constructionarerequired.
TheSB250zR isa highoutput, mid-sizesubwoofer system.This
versatile, all-purpose subwoofer is designed for portable use
where the solid-sounding output of dual 15 inch drivers is
desired. The SB250zR works well with most full-range
loudspeakers in a variety of applications including: band/club
PA, small houses of worship, small auditoriums/theaters, A/V
systems, hotel ballrooms, meeting rooms, classrooms, exhibit
areas, f/x reinforcement, cruise ships, small dance clubs, DJ
monitoring,anddrum-fill monitoring.
The SB250zR is designed to be used with today's sophisticated
digitalsignalprocessingtooptimizetheLFresponse.EAW'sMX
Series processors are recommended for the required crossover
andequalization.
SixYearWarranty.
DUAL 15 INCH SUBWOOFER
See NOTES TABULAR DATA for details, half space = floor-mounted
CONFIGURATION
Subsystem Transducer Loading
SUB 2x15incone Vented
Operating Mode AmplifierChannels ExternalSignalProcessing
Single-amp LF1/LF2 DSPw/1-wayfilter
Dual-amp LF1,LF2 DSPw/1-wayfilter
PERFORMANCE 1
Operating Range 36Hzto150Hz
Nominal Beamwidth
Horz 360°
Vert 360°
Axial Sensitivity (SPL)
LF1/LF2(wholespace)96dB 36Hzto150Hz
(halfspace) 102dB 36Hzto150Hz
Input Impedance (ohms)
Nominal Minimum
LF1/LF2 4 3.7@150Hz
LF1,LF2 8 (each) 7.3@150Hz(each)
High Pass Filter
HighPass =>30Hz,12dB/octaveButterworth
Accelerated Life Test 2
System LF1/LF2 65V 1050W@4ohm
LF1,LF2 65V(each) 525W@8ohm(each)
Transducer(AES) 700W(each)
CalculatedAxial Output Limit (SPL)
Average Peak
LF1/LF2(wholespace)127dB 133dB
(halfspace) 133dB 139dB
ORDERING DATA
Description Part Number
SB250zRDual 15 inch Subwoofer Black 0008864
OptionalAccessories
None
1Toachieve specifiedperformance,the listedexternalsignal processingwithEAW-providedsettingsis required.
2Forrecommendations toselectpower amplifiersize refer to: “HOW MUCHAMPLIFIERPOWER DOI NEED?” onthe EAWweb 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. Part Number: RD0227 (A) SB250zR April 2005
SB250zR Specifications group · J
ENCLOSURE
Material Balticbirchplywood
Finish Wearresistant textured black paint
Grille Powder-coatedperforatedsteel
6.44
DIMENSIONS APPLY
TO BOTH SIDES
RIGHT SIDE
4.03
30.18
1.72
10.81
29.75
GRILLE PARTIALLY SHOWN
FRONT
2X HANDLE
[274.6]
[755.7]
[766.6]
[43.6]
8.50
24.98
24.56
TOP/BOTTOM
[634.5]
[623.8]
L
C
19.62
SB250zR
[215.9]
8X METAL CORNERS
[498.3]
7.18
3.63
[182.5]
INPUT
PRODUCTION
14.50
[368.3]
[92.2]
[168.4]
6.63
BACK
EASTERN ACOUSTIC W ORKS
NOTES:
2. SYMBOL INDICATES CENTER OF BALANCE. 3. WEIGHT APPROX. 112 lb [50.8] 4. SHIPPING WEIGHT APPROX. 122 lb [55.3]
[163.6]
[102.4]
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. Part Number: RD0227 (A) SB250zR April 2005
SB250zR Specifications group · J
PERFORMANCE DATA
See NOTES GRAPHIC DATA for details
Frequency Response: Processed
LF1/2 Whole Space = green
SPL(dB)
Frequency Response: Unprocessed
LF1/2 Whole Space = green
SPL(dB)
Frequency Response: Digital Signal Processor
LF = green
dB re 0.775 V
Impedance Magnitude
LF1/2 = green LF1, LF 2 (each) = orange
Ohms
120
110
100
90
80
70
60
100
10
1
10 100 1000 20000
Frequency (Hz)
10
0
-10
-20
-30
-40
-50
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. Part Number: RD0227 (A) SB250zR April 2005
SB250zR Specifications group · J
INPUT PANEL
SB250zR
WHITINSVILLE, MA USA S/N
NL4 MPR
NL4 MPR
LIECHTENSTEIN
NL4 MPR
NL4 MPR
LIECHTENSTEIN
PIN 1--...LF1--
PIN 1+...LF1+
PIN 2--...LF2--
PIN 2+...LF2+
NOTES
TABULAR DATA
1. Measurement/DataProcessingSystems: Primary-FChart: proprietaryEAWsoftware;Secondary- Brüel& Kjær2012.
2. MicrophoneSystems: EarthworksM30; Brüel&Kjær4133
3. Measurements: DualchannelFFT;length:32 768 samples;samplerate:48 kHz; logarithmicsinewavesweep.
4.Measurement System Qualification(includesalluncertainties):SPL:accuracy+/-0.2 dB@1kHz,precision +/-0.5dB20Hzto 20kHz,resolution0.05dB; Frequency:accuracy+/-1%,
precision+/-0.1Hz,resolution the largerof1.5Hzor1/48octave;Time:accuracy+/-10.4µs,precision+/-0.5µs,resolution 10.4µs;Angular: accuracy +/-1°,precision+/-0.5°,resolution0.5°.
5. Environment: Measurementstime-widowedandprocessed toeliminateroomeffects,approximatingananechoic environment.Dataprocessedasanechoicor fractionalspace,asnoted.
6. MeasurementDistance: 7.46m.Acoustic responses representcomplexsummationofthesubsystems at20m.SPLisreferencedtootherdistancesusingtheInverseSquareLaw.
7. Volts: Measuredrmsvalue ofthe testsignal.
8. Watts: Per audioindustry practice,“loudspeaker watts”are calculatedas voltage squared dividedby ratednominal impedance. Thus,these arenotTrueWattunitsof energyas defined by
InternationalStandard.
9. SPL: (SoundPressureLevel) Equivalentto theaverage levelof a signalreferenced to0 dBSPL=20 microPascals.
10.Subsystem: Thisliststhe transducer(s)and theiracoustic loadingfor each passband.Sub = Subwoofer, LF =Low Frequency,MF = MidFrequency,HF = HighFrequency.
11.Operating Mode: Userselectableconfigurations.Betweensystemelements,acomma(,)=separateamplifierchannels;aslash (/) = singleamplifierchannel.DSP=DigitalSignalProcessor.
IMPORTANT:Toachievethe specified performance,the listedexternal signalprocessing mustbe used withEAW-providedsettings.
12.Operating Range: Range wherethe processedFrequency Response stayswithin -10 dBSPLofthe poweraveraged SPLwithinthis range;measured onthe geometricaxis. Narrowband
dipsareexcepted.
13.Nominal Beamwidth: Designanglefor the-6 dBSPLpoints,referencedto0 dBSPLasthe highest level.
14.Axial Sensitivity: Power averagedSPLoverthe Operating Rangewith aninput voltagethat wouldproduce 1 Wat thenominal impedance;measured withno externalprocessing onthe
geometricaxis,referenced to1 m.
15.Nominal Impedance: Selected 4,8, or16 ohm resistancesuch that theminimum impedancepoint isno morethan 20%below this resistanceover the OperatingRange.
16.High Pass Filter: Thishelpsprotect theloudspeaker from excessiveinput signallevels atfrequencies belowthe OperatingRange.
17.Accelerated Life Test: System:Maximum test inputvoltageapplied withan EIA-426Bdefined spectrum; measuredwith specifiedsignal processing;Transducer:AES2-1984 R1997.
18.CalculatedAxial OutputLimit: Highest averageand peakSPLs possibleduring theAcceleratedLifeTest. ThePeakSPLrepresentsthe2:1 (6 dB)crest factorof theLifeTest signal.
GRAPHICDATA
1.Resolution:Toremoveinsignificant finedetails,1/12 octavecepstralsmoothing was appliedto acousticfrequency responsesand 1/3octavecepstralsmoothing wasapplied tothe
beamwidthandimpedancedata. Othergraphs areplotted usingraw data.
2.Frequency Responses: Variationinacousticoutputlevelwithfrequencyforaconstantinputsignal.Processed:normalizedto 0 dB SPL.Unprocessedinputs:2V(4ohmnominalimpedance),
2.83V(8 ohmnominal impedance),or 4 V(16 ohmnominal impedance)referenced toa distanceof 1 m.
3.Processor Response: The variationin output levelwith frequencyfor aconstantinput signalof 0.775V =0 dB reference.
4.Impedance: Variationin impedance magnitude,in ohms,with frequencywithout regardto voltage/current phase. This meansthe impedancevalues maynot
beusedto calculateTrueWatts(see 8above).
DSP
EQ
HPF
LPF
1-Way, Single-Amp (LF1/LF2)
LF
AMP
LF
DSP
EQ
HPF
LPF
AMP
1-Way, Dual-Amp (LF1, LF2)
LF
AMP LF
SIGNAL DIAGRAM
LEGEND
DSP: User-supplied Digital Signal Processor.
HPF: High Pass Filter for crossover or specified 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.