Wisdom SW-1 User manual

Owner’s Manual
Subwoofer Amplier
SW-1

2
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT
REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED PERSONNEL.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
 Danger Thelightningashwitharrowheadsymbol,withinanequilateral
triangle,isintendedtoalerttheusertothepresenceofuninsulated
“dangerousvoltage”withintheproduct’senclosurethatmaybeof
sufcientmagnitudetoconstituteariskofelectricshocktopersons.
 Important Theexclamationpointwithinanequilateraltriangleisintended
toalerttheusertothepresenceofimportantoperatingand
maintenance(servicing)instructionsintheliteratureaccompanying
thisequipment.
  Markingbythe“CE”symbol(shownleft)indicatescomplianceof
thisdevicewiththeEMC(ElectromagneticCompatibility)andLVD
(LowVoltageDirective)standardsoftheEuropeanCommunity.
Note:Thisequipmenthasbeentestedandfoundtocomplywiththelimitsfor
aClassBdigitaldevice,pursuanttopart15oftheFCCRules.Theselimitsare
designedtoprovidereasonableprotectionagainstharmfulinterferenceina
residentialinstallation.Thisequipmentgenerates,usesandcanradiateradio
frequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstruc-
tions,maycauseharmfulinterferencetoradiocommunications.However,there
isnoguaranteethatinterferencewillnotoccurinaparticularinstallation.If
thisequipmentdoescauseharmfulinterferencetoradioortelevisionrecep-
tion,whichcanbedeterminedbyturningtheequipmentoffandon,theuser
isencouragedtotrytocorrecttheinterferencebyoneormoreofthefollowing
measures:
• Reorientorrelocatethereceivingantenna
• Increasetheseparationbetweentheequipmentandthereceiver
• Connecttheequipmentintoanoutletonacircuitdifferentfrom
thattowhichthereceiverisconnected
• Consultthedealeroranexperiencedradio/TVtechnicianforhelp

3
Important Safety Instructions
Pleasereadallinstructionsandprecautionscarefullyandcompletelybeforeop-
eratingyourWisdomAudioequipment.
1. Readtheseinstructions.
2. Keeptheseinstructions.
3. Heedallwarnings.
4. Followallinstructions.
5. Donotusethisequipmentnearwater.
6. Cleanonlywithadrycloth.
7. Donotblockanyventilationopenings.Installinaccordancewiththemanu-
facturer’sinstructions.
8. Donotinstallnearanyheatsourcessuchasradiators,heatregisters,stoves,
orotherapparatus(includingampliers)thatproduceheat.
9. Donotdefeatthesafetypurposeofthepolarizedorgrounding-typeplug.A
polarizedplughastwobladeswithonewiderthantheother.Agrounding
typeplughastwobladesandathirdgroundingprong.Thewidebladeof
thethirdprongareprovidedforyoursafety.Iftheprovidedplugdoesnot
tintoyoursocket,consultanelectricianforreplacementoftheobsolete
outlet.
10. Protectthepowercordfrombeingwalkedonorpinchedparticularlyat
plugs,conveniencereceptacles,andthepointwheretheyexitfromtheap-
paratus.
11. Onlyuseattachments/accessoriesspeciedbythemanufacturer.
12. Unplugthisapparatusduringlightningstormsorwhenunusedforlongperi-
odsoftime.
13. Referallservicingtoqualiedpersonnel.Servicingisrequiredwhentheap-
paratushasbeendamagedinanyway,suchasapower-supplycordorplug
isdamaged,liquidhasbeenspilledorobjectshavefallenintotheappara-
tus,theapparatushasbeenexposedtorainormoisture,doesnotoperate
normally,orhasbeendropped.
14. ALWAYSdisconnectyourentiresystemfromtheACmainsbeforeconnect-
ingordisconnectinganycables,orwhencleaninganycomponent.
15. NEVERoperatethisproductwithanycoversremoved.
16. NEVERwettheinsideofthisproductwithanyliquid.
17.  NEVERpourorspillliquidsdirectlyontothisunit.
18. NEVERbypassanyfuse.
19. NEVERreplaceanyfusewithavalueortypeotherthanthosespecied.
20. NEVERoperatethisproductinanexplosiveatmosphere.
21. ALWAYSkeepelectricalequipmentoutofthereachofchildren.

4
Table of Contents
Important Safety Instructions .........................................................................3
Unpacking the SW-1 .......................................................................................5
Warmup/break-inperiod.......................................................................................5
Placement Considerations...............................................................................6
Ventilation .............................................................................................................6
Operating Voltage...........................................................................................7
Special Design Features ..................................................................................8
HighEfciency ......................................................................................................8
PowerfulEQ ..........................................................................................................8
Front Panel......................................................................................................9
Rear Panel.....................................................................................................10
Remote turn-on tip polarity........................................................................... 11
Care & Maintenance .....................................................................................14
North American Warranty ............................................................................15
FiveYearWarranty...............................................................................................15
Obtaining Service .........................................................................................16
Specications................................................................................................17
Dimensions ...................................................................................................18
Notes.............................................................................................................19

5
Unpacking the SW-1
AfterunpackingyourSW-1,keepallpackingmaterialsforfuturetransport.In
theeventthatyouneedtoshipyourSW-1,onlytheoriginal,purpose-designed
shippingcartonisacceptable.Anyothermethodofshippingthisproductruns
ariskofdamagetotheSW-1—damagethatwouldnotbecoveredbythewar-
ranty.
CarefullyinspectyourSW-1forpossibledamageduetoshipping.Ifyoudiscov-
erany,contactyourWisdomAudiodealerimmediately.
Warm up/break-in period AlthoughyourWisdomAudioSW-1deliversoutstandingperformancestraight
outofthebox,youshouldexpecttohearitcontinuetoimproveasitreaches
itsnormaloperatingtemperaturesanditsvariouscomponents“breakin.”It
hasbeenourexperiencethatthegreatestchangesoccurwithintherst25-50
hours,butthattheSW-1willcontinuetoimproveinsoundqualityforabout
300hours,afterwhichtimeitremainsquiteconstant.
Theonlyexceptiontothisruleisifpowerisremovedfromtheunit,allowingit
tocooldown.Inthiscaseyoushouldexpectabriefwarm-upperiodbeforethe
SW-1’ssoundqualityisatitsbest.(Fortunately,youwillneverhavetorepeatthe
full300hourbreak-inperiod.)

6
Placement Considerations
PRECAUTION
 Foryourprotection,review“ImportantSafetyInstructions”and
“OperatingVoltage”beforeyouinstallyourSW-1.
NotethatadequateclearancefortheACcordandconnectingsignalcables
mustbeleftbehindyourSW-1.Wesuggestleavingatleastsixinches(15cm)of
freespacebehindyourSW-1soallcableshavesufcientroomtobendwithout
crimpingorunduestrain.
Ifpossible,theSW-1shouldalsobeplacedinsuchawaythatthepowerswitch
ontherearpaneliseasilyaccessible.Thisswitchdisconnectspowerfromthe
unitcompletely,resultingineffectivedisconnectionoftheSW-1fromtheAC
mains.Youmightthinkofthisasa“vacationswitch,”shouldyouwishtoturn
offyoursystemcompletelywhenyouwillbeawayfromhomeforaprolonged
periodoftime.Justremembertoturnitbackonagainwhenyoureturn.
Ventilation YourWisdomAudioSW-1hasrelativelymodestventilationrequirements,
thankstoitsremarkablyefcientdesign.Typically,itbecomesonlymodestly
warmduringnormaloperation.Still,pleasebecertaintokeeptheventsonthe
sidesoftheamplierclearofanyobstruction.(Therackmountattachments
havecorrespondingvents.)
Mechanicaldrawingsareincludedinthismanualtofacilitatespecialinstalla-
tionswherenecessary(see“Dimensions”attheendofthismanual).

7
Operating Voltage
Forcompatibilitywithexistinghouseholdoutlets,astandardthreeprong,15
ampereplugisprovidedontheremovable,IEC-standardACmainscable.
TheWisdomAudioSW-1willoperatewith100V–240VACmainsoperation.
OutsidetheUnitedStates,anddependingonlocalelectricalcodesandregula-
tions,theACmainscordmayneedtobereplacedwithonethatconformsto
localplug/outletstandards.

8
Special Design Features
High Efciency Whilemanycontemporaryamplierswaste50%ormoreofthepowertheypull
fromthewallasheat,yourSW-1amplierrunsatapproximately90%efcien-
cy.Asaresult,morepowerisavailablefortheloudspeaker,andlessiswasted
asheatinyourroom.
Thehighefciencyofthedesignalsomeansthattheamplierscanbeplacedin
closeproximitytoeachother,asinanequipmentrack,withoutundueoverheat-
ing.Ofcourse,caremustbetakentoaccountfortheheatgeneratedbyother
componentsintherack;butyourWisdomAudioamplierswillnotgreatlycon-
tributetothethermalmanagementchallengesofyoursystem.
Powerful EQ WisdomAudiousesanunusualRegenerativeTransmissionLine™(RTL™)design
inoursubwoofers.Itprovidesexceptionaltransientresponse,forasubjectively
“fast”andarticulatebottomendwhichmateswelltoouruniquethin-lmtech-
nology.
However,aswithmostsubwooferdesigns,someequalizationisrequiredto
fullyrealizetheperformancepotentialofRTLdesigns.Inmostsubwoofers,the
requisiteEQissimplybuiltintotheplateamplierthatispartofthesubwoofer
itself.Thisapproachpresentsaproblem,however,whenthesubwooferisde-
signedtobeintegratedintothehomeitself.HencetheSW-1,whichallowsthe
subwoofer’sampliertobeplacedintherackwiththerestoftheelectronics,
whileallowingthesubwoofertobeplacedwhereveritwillperformbest,with-
outviolatingbuildingcodesorevenhavingtoworryabouthavinganACoutlet
nearthesubwooferlocation.
TheSW-1comespre-programmedfromthefactoryforaspecicapplication,
whetheraparticularsubwoofermodel,or“at”inthecaseofEQbeingpro-
videdforelsewhereinthesystem(perhapsinanSC-1).
Important! SincetheSW-1comespre-programmedforaspecicmodelof
subwoofer,itisessentialtouseitonlywiththatmodelofsubwoofer.
Doingotherwisewillalmostcertainlyresultinpoorperformance.

9
Front Panel
LED Indicators
TheStandbyLEDaglowsamberwhentheunitisreceivingpowerbut
hasbeenplacedintoStandbybythepresenceofa12V“low”triggersignal
attheSW-1’s12Vtriggerinput.
IftheSW-1isinitsnormalOperatingstate,theStandbyLEDwillbeoff
buttheblueChannelindicatorbwillbeon.
IfboththeamberandblueLEDsareoff,no powerisbeingsuppliedtothe
amplier.
NotethatthenormaloperatingstatefortheSW-1istobefullyoperational
whensuppliedwithACpower.IfyouwishtotoggletheSW-1between
OperateandStandby,youmaydosobymeansofasimpleDCtrigger.
(SeeDC Trigger In and Out,inthefollowingsection.)

10
Rear Panel
 Caution! TurnofftheSW-1beforeattemptingtomakeorchangeany
connections.
1 Speaker Output Terminals
TheWisdomAudioSW-1isequippedwithhigh-currentbindingpostsfor
outputterminationtotheloudspeakersystem.Totakefulladvantageofthe
amplier’ssonicquality,werecommendusinghigh-qualityspeakercable;
pleaseseeyourWisdomAudiodealer.
 Caution! NEVERconnectapoweramplier’soutputterminalstoanydevice
otherthanaloudspeaker.
NEVERshort-circuittheamplier’soutputterminals.
NEVERconnecttheoutputterminalsofoneampliertotheoutput
terminalsofanotheramplier.
EachSW-1amplierhasasingle,patentedCardasspeakerterminalfor
makingthespeakerwireconnections.Thissystemusesasinglelargeknob
totightendownonbothpositive+andnegative–connectionsatonce,
withoutanyneedfortools.
Theuniquedesignofthesebindingpostsallowstheuseofastrong,hard
materialforthethreadsthatprovidethepressureontheconnection,while
atthesametimeusingoptimalelectricalconnections(whichrequirea
softermetal).Byseparatingthemechanicalandtheelectricalsystems
withintheconnector,bothcanbeproperlyoptimized.
Therearetworecommendedmethodsforconnectingspeakercablesto
youramplier.Eitherahigh-qualityspadelugorhooklug,solderedtothe
cable(orcrimpedwithextremelyhighpressure),isbest.

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Connectthe+(positive)outputpostoftheampliertothe+(positive)
inputterminaloftheappropriateloudspeaker.Connecta–(negativeor
black)outputpostoftheampliertothe–(negativeorblack)inputter-
minaloftheappropriateloudspeaker.Takecaretomaintainthisproper
polaritythroughoutthesystem.
 Caution! DONOTOVERTIGHTENthebindingpostsonyouramplier!The
uniquedesignofthesepostsgivesfarmoreleveragethantraditional
posts.Youwillachievetight,highcontactpressureconnectionswith
onlymodestnger-tightening,andwithouthavingtoresorttospecial
tools.
2 RCA Inputs
Theseaudioinputsnormallyacceptthesubwooferoutputsignalsfrom
thesystem’sSurroundprocessor.Iftwoinputsareconnected,theywillbe
summedandampliedasasinglechannel.
ConnecttheappropriateoutputsoftheSW-1tothisinput,usingahigh
qualityaudiocable.
3 DC Trigger In and Out
These12Vtriggerjacksprovidecompatibilitywithawiderangeofprod-
uctstofacilitateremoteturn-onandturn-offinsystems.These1⁄8”(3.5
mm)“mini-jacks”allowothercomponentstobringtheSW-1inandout
ofstandby.Twosuchmini-jacksareprovidedtoallow“daisy-chaining”of
thisturn-onsignalwithothercomponents,includingadditionalampliers.
Theremotetriggerinputwillbeoperatedbyanypositive-polarityDC
signalbetween3–20volts(onlyafewmilliampsarerequired),withtippo-
larityasshownbelow:
Remote turn-on
tip polarity
+–
Input Signal: 3-20 volts @ less than 10 mA
Output Signal: 12 volts @ 100 mA
WhenconnectedtoACmainspower,withnotriggerpluginserted,the
SW-1isnormallyfullyOn.EmployingaDCTriggerInputallowsyouto
placetheamplierintostandby.Whenthevoltagetransitionsfromhighto
low(off),theunitwillgointostandby.
The12VTriggerOutputjackisdriventoa“high”stateof12voltsafew
secondsaftertheSW-1isturnedon,andcansourceasmuchas100mA
ofcurrentat12volts.Thissignalmaybeusedinturntocontrolother
components,suchasadditionalWisdomAudioSA-seriesampliers.

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EachWisdomAudiocomponenthasashortdelaybuiltintoitsDCtrigger
systemtofacilitateastaggeredturn-onsequence.
YourWisdomAudiodealercanhelpyoutakeadvantageofthesedesign
featurestomaximizeyoursystem’sconvenienceandversatility.
4 Ethernet port
Notimplementedatthistime.Reservedforpossiblefutureuse.
5 Power Switch
An AC mains switch islocatedadjacenttothepowercordontherearpanel
oftheSW-1.ThisswitchmaybeusedtodisconnecttheunitfromtheAC
mainswithouthavingtoactuallyunplugtheSW-1fromthewalloutlet.
Ifyouplantobeawayforanextendedperiod,orhaveanyotherreasonto
turntheSW-1completelyoff,youmayeitherunplugtheSW-1oryoumay
usetheAC mains switch.
 Important! Aswithallyourelectronics,wesuggestyoucompletelydisconnect
theSW-1fromtheACmainsduringsevereelectricalstorms.
6 AC Mains Input and Fuse Holder
A15-ampereIECstandardpowercordisusedwiththeSW-1.Ahighqual-
ity15-ampereACmainscordisincludedwiththeproduct,althoughthe
useofthestandardizedIECreceptaclemeansthatyoumayeasilysubsti-
tuteanotherhighqualityACmainscordifyouwish.
 Warning! YournewWisdomAudioSW-1hasbeensafety-testedandis
designedforoperationwithathree-conductorpowercord.Donot
defeatthe“thirdpin”orearthgroundoftheACpowercord.
WerecommendthatcarebetakentoensurethatallACplugsforthe
equipmentinthesystembewiredsoastoensureproperACpolarity.
Doingsowillminimizenoiseinthesystem.
 Danger! Potentiallydangerousvoltagesandcurrentcapabilitiesexistwithin
yourSW-1.DonotattempttoopenanyportionoftheSW-1’s
cabinet.Therearenouser-serviceablepartsinsideyourSW-1.All
serviceofthisproductmustbereferredtoaqualiedWisdomAudio
dealerordistributor.
IntheU.S.,asimpleACmainstester(foundatanyhardwarestore)can
testtoensurethatyourelectricaloutletsarewiredproperly.Elsewherein
theworld(forexample,inEuropeanUnioncountries),theACmainsplugs
themselvesarenotalwayspolarized.Yourdealercantestfortheproper
orientationoftheplugintheoutlet.Insuchacase,itisgoodpracticeto

13
markbothplugandoutlettoensurethatallproductsremainintheproper
orientationshoulditbecomenecessarytotemporarilydisconnectthe
system(asforexample,duringanelectricalstorm).
Finally,theWisdomAudioSW-1incorporatesafuseblockthatprotects
boththeliveandneutral(ground)sidesofthecircuit.IfyourSW-1is
pluggedintoanACoutletthatyouknowislive(plugalampintoitasa
test),andyetappearstobeoff,checkthefollowing:
1 ChecktheACcordtomakesureitisnotdamaged.
2. ChecktheACmainsswitchtoensurethatitisOn(theside
withthestraightlineisdepressed,notthe“O”side).
3. Ifthatdoesnotresolvetheproblem,turnOfftheACmains
switch(“O”)andthendisconnectthepowercordfromtheAC
mainsreceptacle.
4. Usingasmallscrewdriver,gentlypryopenthefuseblockcover
atthetopedgeoftheassembly.(Youmaybeabletodoitwith
justyourngernail.)
5. Pulloutthefuseblock,andcheckbothfuses.Ifeitherisblown,
pleasecontactyourlocalWisdomAudiodealer(orWisdom
Audio)forservice.

14
Care & Maintenance
ToremovedustfromthecabinetofyourSW-1,useafeatherdusteroralint-free
softcloth.Toremovedirtandngerprints,werecommendisopropylalcohol
andasoftcloth.Dampentheclothwithalcoholrstandthenlightlycleanthe
surfaceoftheSW-1withthecloth.Donotuseexcessiveamountsofalcohol
thatmightdripofftheclothandintotheSW-1.
 Caution! AtnotimeshouldliquidcleanersbeapplieddirectlytotheSW-1,
asdirectapplicationofliquidsmayresultindamagetoelectronic
componentswithintheunit.

15
North American Warranty
Five Year Warranty WhenpurchasedfromandinstalledbyanauthorizedWisdomAudiodealer,
WisdomAudio®electronicproductsarewarrantedtobefreefromdefectsin
materialandworkmanshipundernormaluseforaperiodofveyearsfromthe
originaldateofpurchase.
Duringthewarrantyperiod,anyWisdomAudiocomponentexhibitingdefects
inmaterialsand/orworkmanshipwillberepairedorreplaced,atouroption,
withoutchargeforeitherpartsorlabor,atourfactory.Thewarrantywillnot
applytoanyWisdomAudiocomponentthathasbeenmisused,abused,altered,
orinstalledandcalibratedbyanyoneotherthananauthorizedWisdomAudio
dealer.
AnyWisdomAudiocomponentnotperformingsatisfactorilymaybereturnedto
thefactoryforevaluation.Returnauthorizationmustrstbeobtainedbyeither
callingorwritingthefactorypriortoshippingthecomponent.Thefactorywill
payforreturnshippingchargesonlyintheeventthatthecomponentisfoundto
bedefectiveasmentionedabove.Thereareotherstipulationsthatmayapplyto
shippingcharges.
Thereisnootherexpresswarrantyonthiscomponent.Neitherthiswarrantynor
anyotherwarranty,expressorimplied,includinganyimpliedwarrantiesofmer-
chantabilityortness,shallextendbeyondthewarrantyperiod.Noresponsibil-
ityisassumedforanyincidentalorconsequentialdamages.Somestatesdonot
allowlimitationsonhowlonganimpliedwarrantylastsandotherstatesdonot
allowtheexclusionorlimitationofincidentalorconsequentialdamages,sothe
abovelimitationorexclusionmaynotapplytoyou.
Thiswarrantygivesyouspeciclegalrights,andyoumayalsohaveotherrights
whichvaryfromstatetostate.ThiswarrantyisapplicableinNorthAmerica
only.OutsideofNorthAmerica,pleasecontactyourlocal,authorizedWisdom
Audiodistributorforwarrantyandserviceinformation.

16
Obtaining Service
Wetakegreatprideinourdealers.Experience,dedication,andintegritymake
theseprofessionalsideallysuitedtoassistwithourcustomers’serviceneeds.
IfyourWisdomAudiocomponentmustbeserviced,pleasecontactyourdealer.
Yourdealerwillthendecidewhethertheproblemcanberemediedlocally,or
whethertocontactWisdomAudioforfurtherserviceinformationorparts,orto
obtainaReturnAuthorization.TheWisdomAudioServiceDepartmentworks
closelywithyourdealertosolveyourserviceneedsexpediently.
 Important! ReturnauthorizationmustbeobtainedfromWisdomAudio’sService
DepartmentBEFOREaunitisshippedforservice.
Itisextremelyimportantthatinformationaboutaproblembeexplicitandcom-
plete.Aspecic,comprehensivedescriptionoftheproblemhelpsyourdealer
andtheWisdomAudioServiceDepartmentlocateandrepairtheproblemas
quicklyaspossible.
Acopyoftheoriginalbillofsalewillservetoverifywarrantystatus.Pleasein-
cludeitwiththeunitwhenitisbroughtinforwarrantyservice.Thisstepisnot
necessaryifthewarrantyisregisteredatthetimeofpurchase.(Anotherreason
toregisteryourpurchaseathttp://www.wisdomaudio.com/registration/.)
 Warning! Allreturnedunitsmustbepackagedintheiroriginalpackaging,
andtheproperreturnauthorizationnumbersmustbemarkedon
theoutercartonforidentication.Shippingtheunitinimproper
packagingmayvoidthewarranty,asWisdomAudiocannotbe
responsiblefortheresultingshippingdamage.
Yourdealercanorderanewsetofshippingmaterialsforyouifyouneedto
shipyourcomponentandnolongerhavetheoriginalmaterials.Therewillbea
chargeforthisservice.Westronglyrecommendsavingallpackingmaterialsin
caseyouneedtoshipyourunitsomeday.
Ifthepackagingtoprotecttheunitis,inouropinionorthatofourdealer,inade-
quatetoprotecttheunit,wereservetherighttorepackageitforreturnshipment
attheowner’sexpense.NeitherWisdomAudionoryourdealercanberespon-
sibleforshippingdamageduetoimproper(thatis,non-original)packaging.

17
Specications
All specications are subject to change at any time, in order to improve the
product.
■Rated power output @ 8Ω: 230watts
■Rated power output @ 4Ω: 370watts
■Peak output current: 30amps
■Voltage gain: 31dB
■Input sensitivity: 1.2Vforfulloutput
■Input impedance: 47kΩ
■Polarity: Non-inverting
■Signal to Noise ratio (main outputs): –100dB(ref1Vrms,A-wtd.)
■Output impedance: lessthan0.05Ωfrom20–20,000Hz
■Recommended load impedance: 4–8Ω
■Thermal load: 3BTU/minuteorless
■Mains voltage: 100V–240V
■Overall dimensions: See“Dimensions”
■Shipping weight: 12lbs.(5.5kg)
■Power consumption: 500W(±5%)atfullpower
  10W(±5%)atidle
  0.5W(±5%)instandby
Formoreinformation,seeyourWisdomAudiodealer,orcontact:
Wisdom Audio
1572 College Parkway, Suite 164
Carson City, NV 89706
www.wisdomaudio.com
[e-mail]
Ph: 775.887.8850
Fax: [phone]

18
Dimensions

19
Notes

SW1OM-0.92 ©11/2013WisdomAudio,Inc.Allrightsreserved. PrintedinU.S.A.
WisdomAudio
1572CollegeParkway,Suite164
CarsonCity,Nevada89706USA
Telephone:775.887.8850
Fax:775.887.8820
http://www.wisdomaudio.com
WISDOM and the stylized W are registered trademarks of Wisdom Audio.