User Manual
Contents
1. YAMAHA N S 6 4 9 0 Speaker System Thank you for selecting a YAMAHA speaker system PRECAUTIONS Read these precautions carefully before using your speakers e To assure the finest performance please read this manual carefully Keep it in a safe place for future reference e Install the speakers 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 fire or electrical shock do not expose the speakers to rain or water To prevent the enclosure from warping or discoloring do not place the speakers where they will be exposed to direct sunlight or excessive humidity Do not place the following objects on the speakers Glass china etc If glass etc falls by vibrations and breaks it may cause bodily injury A burning candle etc If the candle falls by vibrations it may cause fire and bodily injury A vessel with water in it If the vessel falls by vibrations and water spills it may cause damage to the speakers and or you may get an electric shock e Do not place the speakers where foreign objects such as water drips might fall It might cause a fire damage to the speakers and or bodily injury Do not place the speakers where they are liable to be knocked over or struck by falling objects Stable placement will also ensure better sound performance e Placing the speakers on the same2. shelf or rack as the turntable can result in feedback e Any time you note distortion reduce the volume control on your amplifier to a lower setting Never allow your amplifier to be driven into clipping Otherwise the speakers may be damaged e When using an amplifier with a rated output power higher than the nominal input power of the speakers care should be taken never to exceed the speakers maximum input Do not attempt to clean the speakers with chemical solvents as this might damage the finish Use a clean dry cloth Do not attempt to modify or fix the speakers Contact qualified 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 speakers PLACING THE SPEAKERS MUsing as 2ch stereo speakers Better stereo images will be obtained when the speakers are slightly angled in towards the listeners Using as main speakers in a multi channel system Position the speakers on both sides of the TV The positioning of speakers is important because it controls the whole sound quality of a multi channel system Set up the speakers on the basis of your listening position by following the owner s manual supplied with your amplifier NS 6490 Main R Front Effect NS 6490 Main L Rear Effect N
3. al s tab as shown in the figure Loosen the terminal knob Release your finger from the tab to allow it to lock Insert the bare wire securely on the cable s wire end Tighten the knob and secure the cable Test the firmness of the connection by pulling lightly on the Test the firmness of the connection by pulling lightly cable at the terminal on the cable at the terminal Note Note Do not let the bare speaker wires touch each other as this could Do not let the bare speaker wires touch each other as this could damage the speaker or the amplifier or both of them damage the speaker or the amplifier or both of them 2 REMOVING THE FRONT COVER The front cover is fastened to the enclosure at four points and can be removed if desired To remove the cover hold on to both sides and slowly pull straight away from the speaker To reattach line up the four pegs on the inside surface of the cover with the four corresponding holes on the speaker and push gently Note When the cover is removed take care not to touch the speaker units with your hands or to exert excessive force with tools SPECIFICATIONS TY Peet necne 3 way acoustic suspecsion speaker system magnetic shielding type DP ivietssisiteressstcekarsieensee eines 20 cm 8 cone woofer 10 cm 4 cone mid range 2 2 cm about 7 8 balanced dome tweeter Frequency response ceceeceeseseteeeeeeeees 45 Hz 23 kHz Nominal impeda
4. nce occ eseeeeseeeeseeeeeees 8 ohms Nominal input power 0 0 0 ceccccceseeseeseeeceeeeeeeeeseeeee 70 W Maximum input power cceseseeseeeeeeeeseeteeeeaees 140 W SCMSIUVILY sects eres haters aes EEE 90 dB 2 83 V m Crossover frequency ccccseseseeteeseeteees 2 5 kHz 8 kHz Dimensions W x H x D eee 267 x 411 x 336 mm 10 1 2 x 16 1 5 x 13 1 5 WIGHit s hsidstikevsibeceseeeetetedatesatnes caceceedeveseates 6 kg 13 2 Ibs
5. ote These speakers feature a magnetically shielded design but there is still a chance that placing them too close to a TV set might impair picture color Should this happen move the speakers away from the TV set CONNECTIONS TO YOUR AMPLIFIER Before making connections make sure that the amplifier is switched off Connections e Connect the input terminals at the rear of the speakers to the speaker output terminals of the amplifier or receiver with the provided speaker cables e Connect the terminals on both the amplifier or receiver and the speakers using one side of the cable Connect the terminals on both components using the other side of the cable e Connect one speaker to the left marked L terminals of the amplifier or receiver and another speaker to the right marked R terminals making sure not to reverse the polarity If one speaker is connected with reversed polarity the sound will be unnatural and lack bass How to Connect U S A Model Europe China and General models Speaker L Speakers output terminals of the amplifier Speakers output terminals of the amplifier OOOO Amplifier or Receiver Remove the insulation coating at the extremity of each me Remove the insulation coating at the extremity of each speaker cable by twisting the coating off speaker cable by twisting the coating off Good No Good Good No Good Press and hold the termin
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