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Before Using Your New SpeakersSpeaker SystemThe speaker cabinets are made out of woodand are therefore sensitive to extreme tem-peratures and humidity.Do not use them inlocations subject to direct sunlight or inD-525humidplaces.such as near an airconditioner.humidifier,bathroom,or kitchen.Place the speakers on sturdy,flat surfaces.Putting them on uneven or unstable surfaceswhere they may fall and cause damage willD-425affect the sound quality.Do not keep water or other liquids close tothe speakers.If a liquid is spilled over them,the woofer and tweeter inside may be dam-D-325aged.Do not handle the speakers with wet or damphands.PrecautionsInstruction ManualIn catalogs and on packaging,the letter at the end ofthe product name indicates the color.Specificationsand operation are the same regardless of the color.The speakers can handle the specified input powerwhen used for normal music reproduction.If they'refed any of the following signals.even if the inputpower is within the specified rating,excessive cur-rent may flow in the speaker coils,causing burningor wire breakage:1.Interstation noise from an untuned FM radio.Thank you for purchasing an Onkyo Speaker2.Audio from a cassette that's being fast-forwarded.System.3.High-pitched sounds generated by an oscillator.Please read this manual thoroughly before usingelectronic musical instrument,and so on.it.Following the instructions in this manual will4.Amplifier oscillation.5.Special test tones from audio test CDs and so on.enable you to obtain optimum perfommance and6.Thumps and clicks caused by connecting or dis-listening enjoyment from your new Speaker Sys-connecting audio cables (always turn off yourtem.amplifier before connecting or disconnectingPlease retain this manual for future reference.cables).7.Microphone feedback.The speakers contain powerful magnets.Do not putmetal items,such as screwdrivers,close to the speak-ers,as they may be attracted toward the magnet,causing injury,or damage to the tweeter diaphragm.Getting to Know the SpeakersUsing the Included Cork Spacers·D-525/D-425/D-325You can improve the sound quality by attaching theincluded cork spacers to raise the speakers off the surfaceGrille attach-ment catcherTweeterGrilleand reduce the contact area.The cork spacers also makethe speakers stable and prevent them from slipping.Cork spacerBottomWooferCabinetThe two speakers are identical.so it doesn't matterwhich one you use on the left or right.D-525/D-425D-325Using Close to a TV or ComputerConnecting the SpeakersTVs and computer monitors are magnetically sensitivedevices and as such are likely to suffer from discolora-Before connecting the speakers,disconnect yourtion or picture distortion when conventional speakersamplifier's power cord from the wall outlet and set itsare placed nearby.To prevent this,the speakers featurevolume control to minimum.internal magnetic shielding.In some situations,how-The speaker's rated impedance is 41.Make sure you con-ever,discoloration may still be an issue.In this case,nect an amplifier that is compatible with a 4 impedance.turn off your TV or monitor,wait 15 to 30 minutes,andUse the supplied speaker cables to connect the speak-then turn it back on again.This normally activates thedegaussing function,which neutralizes the magneticers to your amplifier as shown.field,thereby removing any discoloration effects.If dis-D-525/D.425coloration problems persist,try moving the speakersaway from your TV or monitor.Note that discolorationcan also be caused by a magnet or demagnetizing toolthat's too close to your TV or monitor.Note:If the speakers are placed close to a TV or monitor,due1.Peel the2.Loosen the3.Fasten theto the electromagnetic waves radiated by the TV orinsulation offtemminal screwterminalmonitor,you may hear noise from the speakers eventhe ends ofand insert thescrew.after your amplifier has been turned off.To prevent this,the speakerspeaker cableposition the speakers away from your TV or monitor.cable andinto the holetwist the(until the corecore wires.wires areRemoving the Speaker Grillesinserted fully).You can use the speakers either with or without theirRight speakerLeft speakergrilles,which can be remowed as follows.1.Use both hands to gently pull the bottom of the grillePositive(+)side isaway from the speaker.indicated by a2.Use both hands to gently pull the top of the grillered lineaway from the speaker.3.To replace the grille,align the four fasteners and gen-tly push the grille toward the speaker.Speaker cableRemoveReplace2D-325Speaker Placement1.Peel the insulation off the endsThe sound quality of the speakers is directly affected byof the speaker cable and twistthe size and shape of the room they're used in and itsthe core wires.furnishings.When considering where to place your2.While pressing the lever,insertspeakers,read the following:the wire into the hole,and thenWhere possible,mount the speakers on speakerrelease the lever.stands,concrete blocks,bricks,or a sturdy bookshelf.3.Make sure that the terminals arePutting them directly on the floor will emphasize bassgripping the bare wires,not thesounds.creating a boomy sound.insulation.If a speaker is placed on an uneven surface where itcan wobble or vibrate,bass performance will beadversely affected.You caneliminate speaker wobbleRight speakerLeft speakerby putting a shim made out of cork or metal,such as acoin,underneath the speaker or stand,as shown.Positive (+side isindicated by aSpeaker cableIf you mount the speakers on a flat surface.such as abookshelf,you can improve the sound quality byinserting cork spacers or coins in between the speakerand the shelf.Raising them off the surface like thiswill reduce the contact area and improve the soundIf you like lots of bass,mount the speakers on lowspeaker stands and place them in front of a solid wall.The type of speaker terminals used on the receiver andWalls and furnishings affect sound quality.To achievetheir position depends on the model.Refer to thea good stereo sound,put the left and right speakers inreceiver's instruction manual for details on connectingsimilar locations at the same distance away from yourspeakers to the receiver.listening position and at the same height.If you putthem in totally different locations,for example,oneBefore Turning on Your Receiver:on the floor and the other on a bookshelf.the stereoimaging will be adversely affected.Make sure the speaker's positive (+terminals areconnected to the amplifier's positive (+terminalsTo determine the best positions for your speakers,imagine an equilateral triangle and put the left andand the speaker's negative(-)terminals are connectedright speakers at the ends of the base.The ideal listen-to the amplifier's negative (-)terminals.If you get thepolarity reversed,the sound will be unnatural,with aing position is at or slightly behind the triangle's apex.Angle the speakers toward your listening position.limited bass range and poor stereo imageGlass doors and smooth walls behind the listeningMake sure that the positive (+)and negative(-)wiresare not touching each other.If they are,a short circuitposition can reflect the sound from the speakers andcan make sounds at certain frequencies louder.Youmay occur,damaging your amplifier.can prevent this by hanging sound-absorbing mate-rial,such as thick curtain,on the door or wall.CareTo maintain the appearance of the speakers,you shouldperiodically wipe them with a soft,dry cloth.Stubbornstains can be removed by using a soft cloth dampenedwith water and a mild detergent.Dry the speakers海宅海网immediately afterward with a clean,dry cloth.Do notuse abrasive cloths.thinners.alcohol.or other chemicalsolvents that may damage the finish.3