Yamaha NS-B901 Owner's manual

1En

Read this before using the speaker.

• Toassurethenestperformance,pleasereadthis

manualcarefully.Keepitinasafeplaceforfuture

reference.

• Installthespeakerinacool,dry,cleanplace–away

fromwindows,heatsources,sourcesofexcessive

vibration,dust,moistureandcold.Avoidsourcesof

humming(transformers,motors).Topreventreor

electricalshock,donotexposethespeakertorainor

water.

• Topreventtheenclosurefromwarpingordiscoloring,

donotplacethespeakerwhereitwillbeexposedto

directsunlightorexcessivehumidity.

• Donotplacethefollowingobjectsonthespeaker:

 Glass,china,etc.

Ifglassetc.fallsbyvibrationsandbreaks,itmay

causepersonalinjury.

 Aburningcandleetc.

Ifthecandlefallsbyvibrations,itmaycausereand

personalinjury.

 Avesselwithwaterinit

Ifthevesselfallsbyvibrationsandwaterspills,itmay

causedamagetothespeaker,and/oryoumaygetan

electricshock.

• Donotplacethespeakerwhereforeignobjectssuchas

waterdripsmightfall.Itmightcauseare,damageto

thespeaker,and/orpersonalinjury.

• Donotplacethespeakerwhereitisliabletobe

knockedoverorstruckbyfallingobjects.Stable

placementwillalsoensurebettersoundperformance.

PRECAUTIONS

• Placingthespeakeronthesameshelforrackasthe

turntablecanresultinfeedback.

• Neverputahandoraforeignobjectintotheport

locatedontherearofthespeakerasthismightcause

personalinjuryand/ordamagetothespeaker.

• Whenmovingthespeaker,donotholdtheportasit

mightcausepersonalinjuryand/ordamagetothe

speaker.

• Anytimeyounotedistortion,reducethevolumecontrol

onyourampliertoalowersetting.Neverallowyour

ampliertobedriveninto“clipping”.Otherwisethe

speakermaybedamaged.

• Whenusinganamplierwitharatedoutputpower

higherthanthenominalinputpowerofthespeaker,

careshouldbetakennevertoexceedthespeaker’s

maximuminput.

• Donotattempttocleanthespeakerwithchemical

solventsasthismightdamagethenish.Useaclean,

drycloth.

• Donotattempttomodifyorxthespeaker.Contact

qualiedYamahaservicepersonnelwhenanyserviceis

needed.Thecabinetshouldneverbeopenedforany

reasons.

• Secure placement or installation is the owner’s

responsibility.

Yamaha shall not be liable for any accident caused

by improper placement or installation of the speak-

er.

PLACING THE SPEAKER

Front

Surround

Subwoofer

NS-C901

Thegrilleisdetachedfromthespeakerandpackedsepa-

rately.Becarefulnottoloseit.

PlacethespeakerontopoftheTVorinsidetheTVrackso

thatthespeakerandTVarealignedvertically.

Notes

• Do not place the speaker on top of the TV whose

area is smaller than the bottom area of the speaker.

If placed, the speaker may fall and cause injury.

• Do not place the speaker on top of the TV with an

inclination.

• Placing the speakers too close to a CRT-type TV

may impair the picture color or cause a buzzing

noise. In this case, move the speakers at least

20 cm (8”) away from the TV. This is not an issue

with LCD and plasma TVs.

2En

English

■ CONNECTIONS

Youneedacommerciallyavailablespeakercable.

Thesizeand/ormaterialofaspeakercableaffectsonthe

soundquality.Therefore,werecommendyoutopurchase

ahigh-qualityspeakercabletoexerttheperformanceof

thisunit.

Notes

• Connect the (+) terminals on the amplier and the

speaker using one side of the cable. Connect the

(–) terminals on both components using the other

side of the cable.

• Connect the speaker to the center terminals of your

amplier, making sure not to reverse the polarity

(+, –). If the speaker is connected with reversed

polarity, the sound will be unnatural and lack bass.

• When using an amplier with a rated output power

higher than the nominal input power of the speaker,

care should be taken never to exceed the speaker’s

maximum input.

• The speaker may be damaged if certain sounds

are continuously output at high volume level.

For example, if sine waves from a test disc, bass

sounds from electronic instruments, etc., are

continuously output, or when the stylus of a

turntable touches the surface of a disc, reduce the

volume level to prevent the speaker from being

damaged.

• Please refer to the owner’s manual that came with

your amplier or receiver.

How to connect:

1 Loosentheknob.

2 Remove15mm(5/8”)ofinsulationfromeachendof

thecables,andtwisttheexposedconductorstogether

neatlyandtightly,asshownbelow.

15 mm

(5/8")

3 Insertthebarewireintothehole.

4 Tightentheknobandsecurethecable.

5 Testthermnessoftheconnectionbypullinglightlyon

thecableattheterminal.

Notes

• Do not let the bare speaker wires touch each other

as this could damage the speaker or the amplier,

or both of them.

• Do not insert the insulation coating into the hole.

The sound may not be produced.

When using a banana plug

Unscrewtheterminalknob.

2 Removethecoverbypullingittowardyou.

Banana plug

CONNECTION TO YOUR AMPLIFIER

Before making connection, make sure that the ampliﬁer is switched off.

–

CENTER

Ampliﬁer

NS-C901

Tighten

Black (–)

Red (+)

Loosen

Insulation coating

Bare wire

3En

English

Information for Users on Collection and Disposal of Old Equipment

This symbol on the products, packaging, and/or accompanying documents means that used electrical and

electronic products should not be mixed with general household waste.

For proper treatment, recovery and recycling of old products, please take them to applicable collection points,

in accordance with your national legislation and the Directives 2002/96/EC.

By disposing of these products correctly, you will help to save valuable resources and prevent any potential

negative effects on human health and the environment which could otherwise arise from inappropriate waste

handling.

For more information about collection and recycling of old products, please contact your local municipality,

your waste disposal service or the point of sale where you purchased the items.

[Information on Disposal in other Countries outside the European Union]

This symbol is only valid in the European Union. If you wish to discard these items, please contact your local

authorities or dealer and ask for the correct method of disposal.

SPECIFICATIONS

Type.................................2-waybassreexspeakersystem

nonmagneticshieldingtype

Driver..........................................13cm(5”)conewooferx2

3cm(1”)Aluminumdometweeter

Impedance...................................................................... 6Ω

FrequencyResponse....................56Hzto50kHz(–10dB)

to100kHz(–30dB)

NominalInputPower.....................................................50W

MaximumInputPower.................................................200W

Sensitivity...................................................... 90dB/2.83V/m

CrossoverFrequency................................................4.2kHz

Dimensions(WxHxD)........................500x170x271mm

(19-5/8”x6-3/4”x10-5/8”)

Weight........................................................8.4kg(18.5lbs.)

• Specicationssubjecttochangewithoutnoticedueto

productimprovements.

• Careshouldbetakennottoexceedtheinputpower

valuesnotedabove.

ATTACHING THE GRILLE

Thespeakerandthegrillearepackedseparately.

Toattachthegrille,lineupthefoursalients(magnet)onthe

reversesideofthegrillewiththefourcorrespondingpegs.

Notes

• When the grille is not attached, take care not to

touch the speaker units with your hands or to exert

excessive force with tools.

• There are magnets on the reverse side of the

grille. Do not place the grille close to objects that

might be affected by magnets, such as TVs, clocks,

magnetic cards, diskettes etc. when you don’t use

it.

Taking care of the speaker

Tomaintainthespotlessglossysurfaceofthe

polishednish,wipeitwithasoft,drycloth.To

avoiddamagetothenish,donotapplychemical

solvents,suchasalcohol,benzine,thinner,

insecticide,etc.Also,donotuseadampcloth,or

anytypeofcloththatcontainschemicalsolvents,or

placeaplasticorvinylsheetontopofthespeaker.

Otherwise,thenishmaypeel,thecolormayfade,

orthesheetmaysticktothesurface.

Printed in Indonesia ZH67590

Yamaha NS-B901, NS-C901 Owner's manual

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