Cerwin-Vega LW-12 Service manual

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SAFETY INSTRUCTIONS ............... 2

WARRANTY INFORMATION ............ 3

INTRODUCTION .................... 3

CONTROL DESCRIPTIONS ............. 4

CONNECTING SUBWOOFER ............ 5

TROUBLESHOOTING ................. 6

SPECIFICATIONS .................... 6

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SM-LW12 1

8ERtnCE MANUAL

i WARNING: TO REDUCE THE RISK OF FiRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS SPEAKER CABINET TO RAIN OR MOISTURE. ]

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CAUTION k

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AVIS RlSCiUE DE CHOC IELEClrRI_tUE HE PAS OUVlUR

C.A_: TO RI_K3E n-lE RISK OF

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A RISK OF EUECIRIC5HOCK IS PRIESENT

WII141N IH1$ UNIT.

THI$ SYMBOL INDICAIE5 "IHAT THB_E
A.R£ IMPORTANT _
IINSIR_ IN "n_ELlllERA1LIRE
ACCOMPANYING THIESPEAK]ElL

SAFETY INSTRUCTIONS

Read Instructions - Readallsafety and operatinginstructionsbefore
operatingthe product.

Retain hlslruclfl.ons- Retainall safetyand operating instructions for
future reference.

Read Warnings- Readallwarnings on the product and in the
operatinginstructions.

Follow Instructions - Followall operatingand use instructions.

Water and Moisture- Do not use the product near water; for

example,near abathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, or near aswimming pool, etc.

Ventilation - Do not placethe product in alocation or position that

interfereswith its proper ventilation. For example, do not setthe product
on a bed, sofa, rug, or similarsurfacethat may block the beat sink; or
placeit in a built-in situation, such asabookcase or cabinet that may

impede the flow of airaround the heat sink.
Placement - This product is designedfor floor placement only. Do not

place it on a cart or table. Do not place objectson top ofthe product, as
theywig vibrate off.

Heat- Placethe product awayfromheat sourcessuch as radiators,heat
registers,stoves, or other appliances(induding amplifiers)that produce

heat.

Power Sources - Connect the product only to a power receptacle
of the type described in the operating instructions or as marked on

product.

Grounding or Polarization - Do not defeat theproduct's grounding
or polarization feature.

Power Cord Protection- Route power-supply cords so that they are

not likelyto be walked on orpinchedby items placed on or againstthem.
Pay particular attention to cords at plugs, convenience receptacles, and the
point where they exit fromthe product.

Cleaning- Clean theproductonly with a dry doth; do not use any
liquids such as water orsolvents.

Power lanes - Locate an outdoor antenna away from power lines.

Non-Use Periods- Unplug the product's power cord fromthe oudet
when left unused for along periodof time.

Object and Liquid Entry - This apparatus shall not be exposed to
dripping or splashng and that no objects filled with liquids, such as vases,
shall be placed on the apparatus. Do not use the product near water; e.g.,
near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement,
or near a swimming pool, etc. Use care so that objects do not fall, and

liquids are not spilled into the enclosure through openings.

Damage Requiring Service- If the product requires service,use only
qualified servicepersonnel when:

A. The powersupply cord or the plug has been damaged; or

B. Objects have fallen,or liquid has been spilled into the product; or
C. The product hasbeen exposedto rain; or
D. The product does not appear to operatenormally,orexhibits a

marked change in performance;,or

E. The product has been dropped, or the endosure damaged; or
F. Fuse blows repeatedly.

Servicing - Do not attempt to servicethe product beyond what is

describedin the operatinginstructions.All otherservicingshould be
referred to qualified servicepersonnel.

In the event your Cerwin-VegaSubwoofer failsto operateproperly, please

contactthe dealerwhere you purchased the unit. Or, for further
assistancecontact us atthe addsemeslisted below.

The HT and LW powered subwoofers are CE compliant.

CERWIN-VEGA, 555 EAST EASY STREEr, SIMI VALLEY, CA 93065 TEL:+l-805-584 9332 FtOe+1-805 583-0865 • WWW.CERVa_-Vm&CO._

Cr_w_-VEcat CANt_A, 1655 FEtDSVt_Or. #2, PlOddiNG, Om'tauo LIW 3R7 • C_WIN-VECatEUROVt,Dt,u Au_ 1,DK-9610 NO_G_, D_Mm, K

2

CERWIN-VEGA'S LIMITED WARRANTY

WELCOMETOTHEFAMILY[

Firstoff,youhavegreattasteinloudspeakers.AtCerwin-Vega,deepbass

and greathighsareawayof life. Niceto knowthereareafewpeopleout

therewhoshareourpassionformusic.You'llbegladtoknowthat thisis
afamily-ownedcompany(hasbeensince1953). Andweconsideryouto

bethe newestmemberofthe family.

Webopeyourspeakersgiveyouyearsofenjoyment.Of course,in theevent
ofa problem,makesureyoufamiliarizeyoursdfwiththiswarranty.Welike
to thinkthatwhileyou'resittingin frontofyourspeakers,we'restanding
behindthem.Andnowa fewchoicewordsfromourlawyer.(Hey,every

familyhasone.)

WHO'S COVERED BY THIS WARRANTY?

Cerwin-Vega's Limited Warranty onresidential speakersextends only to
the original purchaser asevidenced by the original BillofSaleand only to

the residentialspeakers purchased from authorizedCerwin-Vega dealers.
Ten words of advice:Retain the original billofsalein asad placet

WHAT'S COVERED BY THIS WARRANTY?

C.e_vin-Vegawarrants that all new residential speakers shallbe flee from
defectsin material and workmanship, under normal and proper use.

Cetwin-Vega agreesto repair or replace(at ouroption) allsuch defective
parts at no charge for labor or materials.

WNM'S NOT COVEREDBY THIS WARRANTY?

This Limited Warranty does not apply to defective equipment that: has
been altered orrepairedby other than factory approvedprocedures; has
been subjected to negligence, misuse or accident;has been damaged by
improper line voltage;had its serialnumber or any part of it altered,

defaced, orremoved; has been used for otherthan home entertainment
purposes; or has been used in a way that is contrary to Cerwin-Vega's

written instructions.

Except as provided by statute, this Limited Warranty does not cover
losses,consequential or otherwise, resulting from the improper use of, or

inability to operate, any Cerwm-Vega product.

HOW LONGDOESTHEWARRANTYEXTEND?

Cerwin-Vega'sLimitedWarrantyextendsforaperiodoffive(5)yearsfor
allsystemspeakercomponentsandtwo(2)yearsforallassociated

electronicscomponents,includingamplifierandcontrollerdevices,'from

dateofpurchaseasshownonthe originalBillofSale. Ifa defectexists

withinthewarrantyperiod,thewarrantywiltnotexpireuntilthedefect
hasbeenfixed.

The warranty period willalso be extendedif the warranty repairshave

not beenperformed due to delayscausedbydrcumstancesbeyond the

control of the originalpurchaser,or ifthe warrantyrepairsdid not

remedy the defect and the original purchaser notifies Cerwin-Vegaor the

originaldealeroran AuthorizedCerwin-VegaService Centerof the
failure of the repairswithin 30 days afterthey were completed.

HowDOYOUGET WARRANTY SERVICE?

Inorder to obtainwarrantyservice,contact youroriginaldealer or
distributor,oran AuthorizedCerwin-VegaServiceCenter. If, for some

reason, you havetrouble locatinga servicerepresentative,contact Cerwin-
Vega'sCustomerService Department for assistance:

Cerwin-Vega!
Customer ServiceDept.
555 EastEasySrteet
Simi Valley, CA 93065

PHONE: [phone] or FAX:[phone]

In some cases, the Customer ServiceDepartment can solvea service
problem without any return of equipment, thereby avoiding transit delays.

WHATIFTHEPRODUCTMUSTBERETURNED?

Iftbe CustomerServiceDepartmentdeterminesthat theequipmentmust
hereturnedto Cerwin-Vegaforservice,a ReturnAuthorizationwillbe
issuedbymail,andthedefectivemerchandisemaybeshippeddirectlyto
theaboveaddressfreightprepaid,alongwithacopyofboththe Return
Authorizationand theoriginalBillofSale.

The product will be replaced orrepaired (atour option)and returned to
the originalpurchaser. Only the return postagewillbe paid byCerwin-
Vega. Cerwin-Vega will not be responsible for damage occurringin
shipment from the originalpurchaser or dueto improper packing
materials. Rememberto pack all equipment carefullyandin the original
carton ifpossible. Additional chargesmay be addedifnew packing
materials arerequired for return shipment. SAVEYOUR ORIGINAL

PACKING MATERIALS_

WHM ARE OTHERREMEDIES UNDERTHELAW?

The exerciseof any of the provisions under the Limited Warranty does
not affectthe protections or remedies of the originalpurchaser under
otherlaws. lfyou have additionalquestions aboutservice,write or callthe
Customer Service Department. This Limited Warranty appliesto all
residential speakers, andsupersedesallpreVmuswarranty statements.
Cerwin-Vega reservesthe right to make changesin product design and
specificationsat any time.

EXCEPT AS PROVIDED HEREIN AND BYAPPLICABLE LAW,
CERWIN-VEGA MAKESNO ADDITIONAL REPRESENTATION

OR WARRANTY OF ANY NATURE WHATSOEVER, EXPRESSED
OR IMPLIED, AS TO THE EQUIPMENT, INCLUDING BUT

NOT LIMITED TO, THE MERCHANTABILITY,FITNESS FOR A

PARTICULAR PURPOSE, DESIGN CONDITION OR

WORKMANSHIP OF THE EQUIPMENT, OR THE QUALITY OF
THE MATERIALINCLUDED THEREIN, THIS LIMITED
WARRANTY CONSTITUTES THE SOLE AND ENTIRE

AGREEMENT BETWEEN CERWIN-VEGA AND THE ORIGINAL

PURCHASER.

INTRODUCTION

This manual coversoperationinformationfor all Powered Subwoofers in

Cerwin-Vega'sHT-Sand LW series. Illustrations of control locations and

book-up wiring may differ in physical appearance and location than those
shown on the actual product you own. However, the operation

information isstill the same.

PRIOR TO INSTALLATION

Carefully unpack your subwoofer, savingthe box and packing materials

incaseyou ever need to transport,ship,or move your subwoofer. Before

continuing with installation, pleasemake sure the subwooferisunplugged
and the power switch is turned OFF.

sd,xtul _ Sct_kageukctlonuoltcb® totheproperACvoltage,
ver# prot_ f_e rat=g(O_ and value)® b(ore aue_ang toconnea
d,ifud,wooferwAC_wer.

INSTALLATION

Pleasereadthe remaining pagesto determine which installation
procedure is best for your audiovideo system. For additionalhook-up
connections, you maywant to referto yourAN receiver,processor,or
amplifier's manual. NOTE.. Besuretoreadand obsen_ the"Safety

Insmuffons" (wepage2) be_re startingtheinstallation.

CONTROL DESCRIPTIONS

ATTENTION! Each subwoofi.r has speaker-level and _e-levd input

connections¢choose only one optionfor hook-up. DO NOT USE
BOTH INPUT CONNECTIONS AT THE SAME TIME!

The following (numbered) comrols are located on the subwoofer's rear

panel, as shown in Figures 1 and 2.

(!) LINE-LEVEL INPUT: Stereo line-level inputs to subwoofer. Use

these RCA jacks to connect audio signals from line-level outputs from
an AN receiver/preamp/processor. (seefigure 3 & 4,j_r hook-up)

(_) SPEAKER-LEVEL INPUT: Stereo speaker-levelinputs to

subwoofer. Use these terminalswhen line-levelconnections are not

availablefrom A/V receiver/preamp/processor.
(seefigure 5,fir hook-up)

(_) VOLUME CONTROL: Controls volume levelofsubwoofer. Use

to balance the outputof the subwoofer with the main speaker output.

@ CROSSOVER FREQUENCY: The crossovercontrol allowsyou m

adjust the upper limit of the subwoofer's frequencyresponsefrom 40
to 120Hz. The subwoofer's responsewillbegin rolling offabovethe
set frequency. Set the CROSSOVER FREQUENCY to the lower
value listed in the main speaker manual.

(_) SPEAKER-LEVEL OUTPUT: Audio loop of stereohigh-level

(SPEAKER-LEVEL)inputs. Use m loop (continue) signalto speaker
connections to the leftandright main speakers.

(seeflgure 5,for hook-up)

_) LINE-LEVEL OlYl'PUT (LW-10/12*, HT-S10MI2A): Useto loop

the full-rangeline-levdsignalback to the receiver/preamplifier/amplifier

fordistribution to mainspeakers. Referto the owner's manual provided

with yourreceiver/preamplifier/amplifier.(seefigure 4,fbr hook-up)

0 LINE-LEVELOUTPUT (HT-SI5A & LW-15*): Use to loop

signal back to the recdver/preamplifiedamplif]erfordistribution to the

main speakers. Use the Line-Levd Output ifyou wish to filterlow
frequenciesoutof the signalgoingto yourmain speakers. Referto the
owner'smanual providedwith your receiver/preamplifier/ampl_er.

(seefigure3, j_r hook-up)

®

PHASE: Compensates for havingsubwoofer and main speakers in
different locations. Ideally,subwoofer sound should reach the
listening position at the same time assound from the main speakers.

However, if the distance from the listening position to the
subwoofer, and from the listening position to the main speakers
differ, the sound from each will reach your earsat different times.
The PHASE control delays the signal 180 degrees,so the subwoofer
output will blend with that oftbe main speakers. Slide the PHASE

switch to "180." At the listening position, listen to the midbass
output. If it sounds weak,set PHASE back to "0."

®

POWER LED: Power indicatorlamp. Glows greenin "AUTO

ON" mode if audio signalispresent. Glows red in both "OFF" and

"AUTO ON "modes if receivingAC power, and audio signalisnot

present afterapproximately20 minutes.

@

POWF_: Two-position power switch. In the "AUTO ON" mode,

the subwoofer's amplifierisautomaticallyactivated if an audio signal

is present and will automaticallybecome inactive when there is no

audio signalpresent afterapproximately20 minutes. In the "OFF"

mode, power isshut offto the amplifier.

®

VOLTAGE SELECTION (LW-X Models only) : User-switchable

voltageselectionforusewith 115 or 230 volt AC. Auentiom A//

suhomofermndds comefrom thefactorypreset to 115 volts. To select

adifferent voltage,use a flat-headscrewdrivertoreposition the switch

to the desiredvoltage. WARNING: Severedamage may mult from

improperlysekcted voltage. Make sw_ you know the voltage

requirement of tl_ _untry you are in beforeattempting to connect

this mhomofer toACpower. Obwrveproper fuse rating (typeand

value)@for sde_cd voltage®.

POWER CORD RECEPTACLE: Connect IEC cord to this

@

receptacle. If the cord supplied doesnot fit art availableAC outlet,
purchase the correctAC cord from your audio dealeror an electrical
supply store.

@

REPLACEABLE FUSE: Protectssystem from overload,replace
with fuserating as indicated on amplifier panel at fuse location.

o o

@

O

?

Figure1. Connectionpandj_rthe HT-S15AandLW-15/15X.

4 * Designates LW or LW-X model.

o@ ® o ® o

&

Figure2 ConnectionpandfortheHT-SlOA, HT-S12A, LW-lO/lOX
andLW-12/12X

PLACEMENT

Cerwin-Vega SubwooferSystemscan be positioned anywhere on the
room's floor. For best performance however,placethe subwoofer nearthe

same wallas your mainspeakers. Experimentto find theareaofoptimum

performance.

NOTE" Usuallythe subwooferwill sound louderwben it'splaced next toa

wallorina comer.

A 7TENTION! Do notplace the subwoofertoo closeto your television.

Some televisions are especially sensitive to the magnetl: field produced
by the subwoofer. If your televisionproduces distorted colorsa)qer

installation, this can be corrected bymoving the subwooferfurther
awayfrom the television until normal coloris returnea_

CA UTION! Cerwln- Vega Sulnooofers are intended for floor

placementonly!Do notplaceheavy objects of any type, (such as a

television) on top of a Cerwin-Vega Subwoofer!

CONNECTING YOUR SUBWOOFER

LINE-LEVEL CONNECTIONS

SUBWOOFER CONNECTION PANEL UNE4._VEL CONNECTIONS

SUBWOOFER CONNECTION PANEL UNE,Lk'VELCONNECTIONS

o...............................o I.

/ - - ,:. i io_.,,J_

I

_ I_OM UNE4.EVEL

! {may roquife am Rt:A "y" adapter

! i '..... R_,,u, Or,T)

,.......... i

Une-Level Connections for Ifte HT-SI SA and LW* 15/15X

IAne-14_ei Connections foe' the h'T-S10A, HT-$ t _. LW-IO/IOX

and LW-12/t_,

Figure3. Figure4.

Figure3&4. C_nnectingL_ and right line_leve__u_uts _f a_ A/V receivert_k_ and right llne_levdinputs _fthe Cerwin-Vegasubw_fer. Rememberto
maintain leftto L°ft,rightto right,connectiom!Rememberto maintain left to left,right to t_ght,(+)to (+) and (-) to (-)connections.

_ UN E4.EVEL OUT

(_y r_eir# inn RGA -?" a_i_

for m_** _u#¢et like SUB _)

I

SPEAKER-LEVEL CONNECTIONS

SUBWOOFER CONNECTION PANEL FROM SPEAKER-LEVEL OUT

_re 5. Connectleft and right.,_ker-_. outputsofa,, A/V receiverto leftand rightspeaker-levelinputsof the subwoofe_.ThenconnectL_ and rightspeaker-

ou_utt of t_. mbwoofrr, with the mam lrJ_andrightsp_akosofyour qsten_ Rememberto mamtamle_ tole_,right to right,(+)te (+)and

(4te(-)conm_o_u.

TROUBLESHOOTING

SYMPTOMS

Basssounds distorted

CAUSES SOLUTIONS

Subwoofer amplifier is at maximum output Lowersubwoofervolumeor receiverlevelcontrol

Receiver tone controls are set too high Set bass flat; use tone controls sparingly

Distortion with volume control near minimum Defective receiveror preamplifier, or shorted Repair defectivereceiver,preamplifieror replace

speaker wires speakerwires

Distortion on music peaks or sound effects Dynamic soundtrack (e.g., explosions) Turn down volume control to lower over£1

Buzz, hum, or crackle when connecting wires Connecting wires with power on causes tramient Connect wires only when system power is off

range; use a more powerfialreceiver/amplifier

signal spikes

50160 cyclehum when systemison Residentialgrounding problem Use a three-to-two prong AC adaptor (available

at your audio dealer or localelectronic supply).

No sound after listening at high levels Amplifier's thermal protection has been Lowersubwoofer volume and allow amplifier to

temporarily activated cool down; sound should resume automatically

Volume control is at maximum, yet sound is low Both channels are not being driven Use an RCA "y" adapter[o drive both channels

SPECIFICATIONS: HT-S SERIES SPECIFICATIONS: LW SERIES

HT-S10A LW-10/10X

F_QUENO/RESFONSE: 30 to 150 Hz F_EQUENO/RESPONSE: 32 Hz to 180 Hz
A_puF[ra Po'm_ Otm,i_: 100 Waas (RMS) _uHr_ PowL_OLrrP_: 100Wat,s(RMS)

c.o_2_.............. c2_n£"."°__t"Z92"9ogAO_2_50_EL_28__dB_2_"_.....

PotaarrY SWffCH: 0° m 180"(userseLectabLe)

St_SONICFILTE_ 18 dB per octavebelow 30 Hz
VOLTAGe: 115Vac

DtMF_I$1ONS(H XW x D): 1T' x 15" x 15"/ 432 can• 38.1cm x 38.1 cm

Po_r'r SWITCH: 0° or 180° (t_er sHeo_ble)

.........................................

s_E"2cF'J___........ 18'iB_y"= _°w3!___L.....................

VOLT/*_E: 115Vac (LW-10), 115/230 Vac (LW-10X)
DIMF_ZSlOi'lS(H XW X D): 18.5" x 12"x 18.75" / 47 canx30.5 cm x40 cm

o._^____w?,_Em-...... _E__(z_5_.o_....................... _y____5.q__y__,5__-........ 85*_(23.0_.............................................

FINISH; Blackwoodgralnvinyl FINISH: Blackwoodgrainvinyl

HT-S12A LW-12/12X

F_QUENCYR_PONSF_ 28 m 150 Hz FF,£qUE_ P,_OI_S_: 30 Hz _o150Hz

A_FI_. POW_ OU'I_sr: 150Wa_ (RMS) _FI_ Po'm.a O_: 150 Warn (RMS)

D_t_. D_sl¢;n: 12" high _iclmcy ,_,eofer/diexas__¢odnum flame DRIVERD_SmN: 12" high ei_ciene/weof_ldieost aluminumframe

C_OSSOW_.: Confiauomly variableflora 40 to 150 Hi @ 18dBlocrave Ceosso'€_: Contin_i_sly variablefrom40 -150 Hz @18dB/octav:

POL_'_ Swrrol: 0°oe 1800(l_e_ wi:oable)
SUBSONICFILTE_ 18 dB pe_o_taw bdow28 Hz

VOLT^G_ 113Vac

DIM_e_SlONS(H XW XD): 19" x 17"x 17" 1483 _ x43.2 _mx432. o_
U_pAO_D WO_Wr: 60 _b(27.3 k0

F*_rSH: Bl,_kwo_.-..i, _.orl

HT-S15A LW-15/15X

FREQUENCYRESPONSE: 25 to 150 Hz Fp_qUENC_IL_eo_s_ 27 Hz to 150 Hz

AMmFIERPOWEaOL_PUT: 200 Watts (RMS) A_pu_ Pow_. O_: 200Wa_ (RMS)

DRrVERDESIGN: 15" high dF_Aenc/_ferl_lie_st duminum flame De.lv_ DESIGN: 15"h_h *:_deBq, w_of_/ditcas_ aluminum frame

Crossov_.: Condmmusly _aiable from40 to 150 Hz @18 dBIoctave Cgossov_: Continuously variablefrom40 - 150 Hz @18dB/oc_ave

POLARITYSWiTOA: 0_or 180_(m_"sd_.'oable} PoLg_.ffYS_O4: 0"ot 180"(m_zs_le)
SU_ONICFILTE_ 18dB per octavebdow25 Hz SlaVONICFILTEg: 18 dBperochre below25 Hz

VOLTAGE: 115Vac VOLTAGE; 115Vac(LW-I8). 1151230Va_ (LW-I 5X)
DIM_ASlONS(H XW XD): 23.5" x 18.75"x 18.75" / 59.7 _ x 47.6 _ra x 47.6 cm Dit,_t_sloNs (H X W x D): 21"x IT x 18" 1533 o_ax 43.2 _ x45.7 can

UNpt_ED WElkin': 72 Ib (32.8 Do) UNPt_g_ WEtGFrr: 72 Ib(32.8 kg)
FINISH: Bleakv,_d_n vinyl FINISH: Black woo_r_ _iny[

pO_l_r_ SWITOt: 0_or180" (users_able)
SUBSONICFILTT2.: 18dB per octavebelow 30 Hz

VOLTAGE: 115 Vac (LW-12), 115/230 Vac (LW-12X)
DI_a',ZSIO_S(H x W x D): 19.5" x 14"x 17.3" / 49.5 cmx 35.6 cmx 44 nB

UNe^C_[_ WEm_: 60 Ib(27.3kg)
FINISH: Bhckv,oodgr,ln vin_l

Geawln-V_ismmtanfl,/mMngtomlm_a tbehlgbe__ sland=ads.Asan:s_ltolrtheseeffom,raoclificath_roayh_madefrmntimetotimeto_tistiag_a_ _t _r _.

6 Spedfica_m andappearar.emaydiff=fromthoseIlatedor#aowain thismaaual.