NS-55 NS-45
HOME CINEMA MAIN SPEAKER
Thank you for selecting this Yamaha speaker system.
PRECAUTIONS
Read these precautions carefully before using your speakers.
●Any time you notice distortion, reduce the volume of your amplifier. Never allow your amplifier to be driven into “clipping”. Otherwise the speakers may be damaged.
●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 cabinets with chemical solvents as this might damage the finish. Use a dry, soft cloth.
●To prevent the cabinets from warping or discoloring, do not place the speakers where it will be exposed to direct sunlight or excessive humidity.
●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.
●Do not place the speakers on the same shelf or rack as the turntable. The vibration of the speakers might cause the feedback.
●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 speakers.
CONNECTION TO YOUR AMPLIFIER
BEFORE MAKING CONNECTIONS, MAKE SURE THAT THE AMPLIFIER IS SWITCHED OFF.
■ CONNECTIONS
●Connect the screw-type input terminals at the rear of the speakers to the speaker output terminals of your amplifier with the provided speaker cords.
●One side of the speaker cord is red and the other side is black. Connect the (+) terminals on both the amplifier and the speakers using this red side. Connect the (–) terminals on both components using the black side of the cord.
●Connect one speaker to the left (marked L) terminals of your amplifier, 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.
Procedures:
Loosen the terminal knob.
Insert the bare wire end properly into the terminal hole. [Remove approx. 10 mm (3/8”) insulation from the speaker cord.]
Tighten the knob.
Test the security of the connection by pulling lightly the cord at the terminal.
* Banana Plug connections are also possible. First tighten the terminal knobs, and then insert the Banana Plug connector into the corresponding terminal hole.
Loosen 
Tighten
Black(–)
Red (+)
Red line
Speaker (R) |
Speaker (L) |
Red line 
Black line |
Speaker output |
|
terminals of the |
|
amplifier |
Amplifier
Note
Do not let the bare speaker wires touch each other as this could damage the speakers or the amplifier, or both of them.
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