NS-70

Natural Sound 3-way, 4-speaker Bass Reflex Speaker System
Thank you for selecting this Yamaha NS-70 speaker system.

PRECAUTIONS

Read these precautions carefully before using your speaker.

cAny 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 speaker may be damaged.

cWhen using an amplifier 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.

cDo not attempt to clean the speaker with chemical solvents as this might damage the finish. To clean, wipe with a dry, soft cloth.

cTo prevent the enclosure from warping or discoloring, do not place the speaker where it will be exposed to direct sunlight or excessive humidity.

cDo 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.

cPlacing the speaker on the same shelf or rack as the turntable can result in feedback.

cSecure placement or installation is the owner’s responsibility.

YAMAHA shall not be liable for any accident caused by improper placement or installation of the speaker.

CONNECTION TO YOUR AMPLIFIER

BEFORE MAKING CONNECTIONS, MAKE SURE THAT THE AMPLIFIER IS SWITCHED OFF.
■CONNECTIONS

cConnect the screw-type input terminals at the rear of the speakers to the speaker output terminals of your amplifier with the provided speaker cables.

cOne side of the speaker cable 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 cable.

cConnect 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:

➀Loosen the terminal knob.

➁Insert the bare wire end properly into the terminal hole. [Remove approx. 10 mm (3/8”) insulation from the speaker cable.]

➂Tighten the knob.

Loosen

Tighten

Black(–)

Red (+)

Red line

Speaker (R)

Speaker (L)

Red line

➃Test the security of the connection by tugging lightly on the cable 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.

Black line

Note

Speaker output terminals of the amplifier

Do not let the bare speaker wires touch each other as this could damage the speaker and/or the amplifier.