Panasonic SB-W740 Manuale utente

ORDERNO. MD0512499C7

SubwooferSystem

SB-W740P

Colour

(S)... SilverType

SPECIFICATIONS

Specification

Type 1way, 1speaker system (Bass-ref.)

Speaker unit Impedance 4

Woofer 16 cm (6-1/2”) Conetype

Inputpower (IEC) 320 W*(Max)

Outputsound pressure

level 80 dB/W(1.0m)

Frequencyrange 32 Hz-220 Hz(-16 dB)

38 Hz-180 Hz(-10 dB)

Dimensions(WxHxD) 183 mm x396 mm x267 mm

7-7/32”x15-19/32”x10-1/2”

Mass 4 kg (8.8lbs.)

Notes :

1. Specificationsaresubject to changewithout notice. / Mass and

dimensionsareapproximate.

2. Total harmonicdistortion ismeasuredbythe digital spectrum

analyzer.

System :SC-

HT740GCPS

MusicCenter :SA-HT740GCPS

FrontSpeaker :SB-FS740P-S

Surround Speaker :SB-FS741P-S

Center Speaker :SB-PC740P-S

Subwoofer :SB-W740P-S

System :SC-HT740P-S MusicCenter :SA-HT740P-S

FrontSpeaker :SB-FS740P-S

Surround Speaker :SB-FS741P-S

Center Speaker :SB-PC740P-S

Subwoofer :SB-W740P-S

System :SC-HT740PC-

MusicCenter :SA-HT740PC-S

FrontSpeaker :SB-FS740P-S

Surround Speaker :SB-FS741P-S

Center Speaker :SB-PC740P-S

Subwoofer :SB-W740P-S

System :SC-HT740PX-

MusicCenter :SA-HT740PX-S

FrontSpeaker :SB-FS740P-S

Surround Speaker :SB-FS741P-S

Center Speaker :SB-PC740P-S

Subwoofer :SB-W740P-S

Unauthorizedcopying and distribution isaviolation oflaw.

1. Assembling and Disassembling

“ATTENTION SERVICER”

Some chassis components mayhave sharpedges. Be careful whendisassembling and

servicing.

1. Thissection describes procedures for checking theoperation of

themajor printedcircuitboardsand replacing themain

components.

2. For reassemblyafteroperation checks or replacement, reverse

therespectiveprocedures.

Special reassemblyprocedures aredescribedonlywhenrequired.

3. Select itemsfrom thefollowing index whenchecks or

replacementarerequired.

4. RefertotheParts No. on thepageof“Parts Location and

ReplacementParts List”(Section 5), ifnecessary.

Belowis the listof disassemblysections

-DisassemblyofFrontCabinet Assembly

-DisassemblyofWoofer

-DisassemblyofSpeakerCabinet Assembly

1.1. Disassemblyflowchart

The following chartis the procedure fordisassembling the casing and inside parts forinternal

inspection whencarrying out the servicing.

Toassemble the unit, reverse the steps showninthe chartas below.

1.2. DisassemblyofFrontCabinet Assembly

Step1:Upsetthe unitas shownabove.

Step2:Inserta steel rule into the grooves of the Speakerunit. Pushthe steel rule forwardand

backwardas arrowshown.

Step3:Inserta flatheadscrewdriverinto the grooves as arrowshown. Ensure thatthe

screwdriveris above the Steel rule.

Step4:Use the screwdriverto slightlypushup the Front CabinetAssemblyas arrowshown

and insertthe Wood chip.

Step5:Atthe boss area pushup as arrowshownto openthe boss.

Caution:

Donot exertstrong force as itmaydamage the Front CabinetAssembly.

1.3. DisassemblyofWoofer

Follow(step1)to (step5)of item1.2.

Step1:Remove all 4 screws from the Woofer.

Step2:Inserta steel rule betweenthe Wooferand SpeakerCabinetAssemblyto pushout the

Woofer.

Step3:Take out the Wooferunit.

Step4:Remove the Wooferbydetaching the (+)white and (-) blue wires.

1.4. AssemblyofSubwooferUnit

Step1:Scrape off using the scriberand cleanup the remaining glue atthe 6 bosses and 6 holes

as arrowshownand replace with the normal glue.

Step2:Fix the Front CabinetAssemblyfirmlyback to the SpeakerCabinetAssembly.

2. Connection ofthe Speaker Cables

-Besuretoconnect speakercables beforeconnecting theAC

powersupplycord.

-Theloadimpedance ofanyspeakerusedwiththisunitmust be4

-Besuretoconnect thecablefrom therightspeakertotheright

terminal and thecablefrom theleft speakertotheleft terminal.

1. Stripoff theoutercovering, and twist thecenterconductor. Make

surethebareendsofthewires arenotunravelled. (Iftheyare,

twist themtightagain.)

2. Insertthewiretotherearpanel oftheunitand close thelever.

Notes :

-Topreventdamagetocircuitry, nevershort-circuitpositive(+) and

negative(-) speakerwires.

-Besuretoconnect onlypositive(white) wires topositive(+)

terminalsand negative(blue) wires tonegative(-) terminals.

Incorrect connection candamagethespeakers.

Positioning the speakers

Howyou setup yourspeakers canaffectthe bass and the sound field.

Note the following points:

-Place thespeakerson flat securebases.

-Placing speakerstoo close tofloors, walls, and cornerscanresult

inexcessivebass. Coverwallsand windowswithathick curtains.

-Left and rightspeakersareinterchangeable, butfrontand

surround speakersarenot.

Setup example

Place the front, centerand surround speakers atapproximatelythe same distance from the

seating position.

The angles inthe diagramare approximate.

Usedonlysuppliedspeakers

-Using otherspeakerscandamagetheunit, and sound qualitywill

benegativelyaffected.

-Set thespeakersup on anevensurface topreventthemfrom

falling.

Take careproperprecautionstopreventthespeakersfrom falling

ifyou cannotsee themup on anevensurface.

Mainunit

Note

-Keepyour speakersat least 10 mm (13/32”)awayfrom thesystem

for properventilation.

-Toallowfor properventilation and tomaintaingood airflowaround

themainunit, position itwithat least 5cm(2”)ofspace on all

sides.

-Donotblock theventilation holes ofthemainunit.

Centerspeaker

-Vibration causedbythecenterspeakercandisruptthepictureifit

isplaceddirectlyon thetelevision. Putthecenterspeakeron a

rack or shelf.

-Topreventthespeakersfrom falling, do notplace directlyon top

ofthetelevision.

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