EAW Dual 12-Inch Subwoofer AX122 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: RD0190 (B)AX122 April 2005
AX122 Specifications group · I
DESCRIPTION
TheAX122 isthecompanionsubwoofer for theAX Series of full-
range loudspeakers. Designed to extend the low frequency
response ofAX arrays to below 35 Hz, this compact subwoofer
features advanced, high power, 12 in drivers, producing an
exceptionalamountof outputforitssize.
The AX122’s drivers are mounted in a “clam shell” driver
arrangement. This provides tighter driver coupling to increase
output and improve impact. A massive port radiates the
considerableenergyneededattheenclosure'stuningfrequency
tocomplementtheAX3full-rangeloudspeakers.
The dual trapezoid enclosure is identical in size and shape to
thatof otherAX Seriesloudspeakers. Inaddition ithas thesame
3/8-16 threaded mounting points. This means the AX122 is
easily incorporated into AX arrays, both physically and
aesthetically.
The barrier strip input connector for theAX122 has a second set
of“loopthru” terminalsforconnectinganadditionalAX122.
Sixyearwarranty.
DUAL 12-INCH SUBWOOFER
See NOTES TABULAR DATAfor details
CONFIGURATION
Subsystem Transducer Loading
Sub 2x 12incone Vented
Operating Mode AmplifierChannels ExternalSignalProcessing
Single-amp Sub DSPw/1-wayfilter
PERFORMANCE 1
Operating Range 34Hzto128Hz
Nominal Beamwidth
Horz 360°
Vert 360°
Axial Sensitivity (wholespaceSPL)
Sub 96dB 34Hzto128Hz
Input Impedance (ohms)
Nominal Minimum
Sub 4 4.8@ 128Hz
High Pass Filter
HighPass =>31.5Hz,24dB/octaveButterworth
Accelerated Life Test 2
Sub 75V 1400W@4ohm
CalculatedAxial Output Limit (whole spaceSPL)
Average Peak
Sub 127dB 133dB
ORDERING DATA
Description Part Number
AX122Subwoofer Black 0011342
AX122Subwoofer White 0011583
AX122Subwoofer Black WP 0011581
OptionalAccessories
Eyebolt/Forged Shoulder (3/8-16 x 1.25 in) 104001
1Toachieve specifiedperformance,the listedexternalsignal processingwithEAW-providedsettingsis required.
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. Part Number: RD0190 (B)AX122 April 2005
AX122 Specifications group · I
ENCLOSURE
Material Balticbirchplywood
Finish Wearresistant texturedblackpaint
Grille Powder-coatedperforatedsteel
40° (23.98)
DIMENSIONS APPLY TO BOTH SIDES
B
RIGHT SIDE
VIEW B-B
[609.0]
20.00
36.00 32.06
FRONT
GRILLE PARTIALLY SHOWN
[914.4] L
C
[814.3]
6.45
[163.8]
3.48 40° 2.13
24.00 20.32
[88.5]
DIMENSIONS APPLY
TO TOP AND BOTTOM
TOP
[516.1]
[54.1]
[609.6]
(11.98) A
[304.2]
L
C
15.79
3.48
2.12
A
B
[53.8]
[88.5]
[508.0]
C
L
[401.0]
8.65
15.79
5.00
BACK
VIEW A-A
PRODUCTION
C
L
[127.0]
[101.6]
EASTERN ACOUSTIC W ORKS
4.00
SERIAL NUMBER
20.65
PLATE
C
L
[524.5]
INPUT
NOTES
1. SYMBOL INDICATES MOUNTING POINT,
3/8-16 THREADED HOLE (PI ANGLE).
2. SYMBOL INDICATES CENTER OF BALANCE. 3. WEIGHT APPROX. 113 lb [51.2 kg] 4. SHIPPING WEIGHT APPROX. 133 lb [60.3 kg]
[401.0] L
AX122
C[219.7]
NOTES: Thisdrawinghas beenreduced.Donotscale.
ForWPversion, add0.25 in/6.4mm tothe outside dimensions =0.125in/3.2 mmallaround.

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: RD0190 (B)AX122 April 2005
AX122 Specifications group · I
PERFORMANCE DATA
See NOTES GRAPHIC DATA for details
Frequency Response: Processed
LF = green
SPL(dB)
Frequency Response: Unprocessed
LF = green, MF/HF= black, Single-amp = blue
SPL(dB)
Frequency Response: Digital Signal Processor
LF = green, MF/HF= black, Single-amp = blue
dB re 0.775 V
Impedance Magnitude
LF = green, MF/HF= black, Single-amp = blue
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: RD0190 (B)AX122 April 2005
AX122 Specifications group · I
INPUT PANEL
WHITINSVILLE, MA USA
-- +-- +
LOOP THRU
S/N
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 +/-0.5 dB20Hzto 20 kHz,resolution0.05dB;Frequency: accuracy+/-1%,
precision+/-0.1Hz,resolution the largerof1.5Hzor1/48octave;Time:accuracy+/-10.4 µs,precision+/-0.5µs,resolution10.4µs;Angular:accuracy+/-1°,precision+/-0.5°,resolution0.5°.
5. Environment: Measurementstime-widowedandprocessed toeliminateroomeffects,approximatingananechoic environment. Dataprocessed asanechoicorfractionalspace,as noted.
6. MeasurementDistance: 7.46m.Acousticresponsesrepresentcomplexsummationofthesubsystems at20m. SPLisreferencedtootherdistancesusingtheInverseSquareLaw.
7. Volts: Measuredrmsvalue ofthetestsignal.
8. Watts: Per audioindustrypractice,“loudspeaker watts” are calculatedasvoltagesquareddividedby ratednominalimpedance. Thus,these are notTrueWattunitsofenergyasdefined by
InternationalStandard.
9. SPL: (SoundPressureLevel) Equivalenttotheaveragelevel ofasignalreferencedto 0 dBSPL= 20microPascals.
10.Subsystem: Thisliststhe transducer(s)andtheiracousticloading foreachpassband.Sub=Subwoofer,LF=LowFrequency,MF= MidFrequency,HF =HighFrequency.
11.Operating Mode: Userselectableconfigurations.Betweensystemelements,acomma(,)=separateamplifierchannels;aslash (/) = singleamplifier channel. DSP=DigitalSignalProcessor.
IMPORTANT:To achievethespecifiedperformance, the listedexternalsignalprocessingmust beusedwithEAW-providedsettings.
12.Operating Range: Range wheretheprocessedFrequencyResponse stayswithin-10 dBSPLof the poweraveragedSPLwithinthisrange;measured on thegeometricaxis.Narrow band
dipsareexcepted.
13.Nominal Beamwidth: Designanglefor the-6dBSPLpoints,referencedto0 dB SPLasthe highest level.
14.AxialSensitivity: PoweraveragedSPLovertheOperating Rangewithaninputvoltagethat would produce1Wat the nominalimpedance;measuredwith no externalprocessingonthe
geometricaxis,referenced to1m.
15.Nominal Impedance: Selected 4,8,or16ohm resistancesuchthat theminimumimpedancepointis nomorethan20%below this resistanceover theOperatingRange.
16.AcceleratedLifeTest: Maximum testinputvoltageappliedwithan EIA-426Bdefinedspectrum;measuredwith recommendedsignalprocessingandRecommended ProtectionFilter.
17.CalculatedAxialOutput Limit: Highest average andpeakSPLspossibleduring theAcceleratedLifeTest. ThePeakSPLrepresentsthe2:1(6 dB)crestfactorofthe LifeTestsignal.
18.High Pass Filter: Thishelpsprotecttheloudspeakerfrom excessiveinputsignallevelsat frequencies belowtheOperatingRange.
GRAPHICDATA
1.Resolution:Toremoveinsignificant finedetails,1/12octavecepstralsmoothingwasapplied toacousticfrequencyresponsesand 1/3 octave cepstral smoothing wasappliedtothe
beamwidthandimpedancedata. Othergraphs areplottedusingrawdata.
2.Frequency Responses: Variationinacousticoutputlevelwithfrequencyforaconstantinputsignal.Processed:normalizedto 0 dB SPL. Unprocessedinputs:2V(4 ohm nominal impedance),
2.83V(8 ohmnominalimpedance),or4 V(16 ohmnominalimpedance)referenced to adistanceof1m.
3.Processor Response: The variationinoutputlevelwith frequency foraconstantinputsignal of 0.775V=0dB reference.
4.Beamwidth:Averageanglefor each 1/3octavefrequencybandwhere,startingfrom therearoftheloudspeaker,theoutputfirstreaches -6dBSPLreferenced to0dBSPLasthehighest
level.Thismethodmeans theoutputmaydropbelow -6 dBSPLwithin thebeamwidthangle.
5.Impedance: Variationin impedance magnitude,inohms,withfrequency withoutregardtovoltage/currentphase.Thismeans the impedancevaluesmaynot
beusedto calculateTrueWatts(see9 above).
6.Polar Data:Horizontalandvertical polarresponsesforeach1/3 octavefrequencyband 100Hzto16kHz orOperatingRange.
DSP
EQ
LPF
1-Way, Single-Amp (LF1/LF2)
LF
AMP
LF
SIGNAL DIAGRAM
LEGEND
DSP: User-supplied Digital Signal Processor.
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.
AX122
ID LABEL