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PRECAUTIONS

Read these precautions carefully before using your speaker.
• 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 speaker may be
damaged.

• When 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.

• Do not attempt to clean the speaker with chemical

solvents as this might damage the finish. To clean, wipe
with a dry, soft cloth.

• 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 speaker where it is liable to be knocked

over or struck by falling objects. Stable placement will also
ensure better sound performance.

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

turntable can result in feedback.

• This speaker system is designed for home use only. Never

use this speaker system inside a car.

• 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 speaker.

ATTACHING STAND

Attach the included stands to the
speakers using the two included
screws. Place the speakers next
to a personal computer on a
desktop to achieve the optimum
listening position. Be sure to
attach the stands to the speakers
correctly as shown in the figure.
If you attach them in the opposite
direction or otherwise incorrectly,
the speakers may fall and be
damaged or cause injury.

Non skid pad

To prevent the speakers from sliding around, attach the
supplied pads as shown in the illustration.

You can also use the screw holes on the rear of the speaker
for installing the speakers.

60 mm

A screw with a diameter of 4 mm and a 
pitch of 0.7 mm can be used.
(Depth of hole: 8 mm)

NS-U50

CONNECTION TO YOUR AMPLIFIER

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

CONNECTIONS

• Connect the push-type input terminals at the rear of the

speakers to the speaker output terminals of your amplifier
with the provided speaker cord.

• One side of the speaker cord is marked by a red line.

Connect the (+) terminals on both the amplifier and the
speakers using this red-marked 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:

1

Press the tab on the terminal down, as shown in the
figure.

2

Insert the bare speaker wire end properly into the terminal
hole. [Remove approx. 5 mm (1/4") insulation from the
speaker cord.]

3

Remove your finger from the tab to allow it to lock snugly
on the cord’s wire end.

4

Test the security of the connection by tugging lightly on the
cord at the terminal.

ANALOG

PC IN

AUX 1
  IN

SUB

WOOFER

OUT

IN

OUT

AUX 2

R

L

ANTENNA

AM

FM
75 

UNBAL

GND

DIGITAL

SPEAKERS

6

 MIN./SPEAKER

+

USB

OPT OUT

AUX 1
OPT IN

COAX IN

PC

OPT IN

R

L

SPEAKERS

6

 MIN./SPEAKER

+

R

L

Speaker (R)

(RP-U100)

Speaker (L)

Red line

Black line

+

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

*

*

*

* Non skid

pad

SPECIFICATIONS

Natural Sound 2-way Acoustic
Suspension Speaker System

Printed in Malasia  

IP

V425250

G

Type

: 2-way acoustic suspension

magnetic shielding

Driver

: Woofer ..... 9 cm (3-1/2") cone

Tweeter .... 2.5 cm (15/16")

balanced dome

Nominal input power

: 40 W

Maximum input power

: 100 W

Frequency response

: 75 Hz – 30 kHz

Sensitivity

: 88 dB

Crossover frequency

: 5 kHz

Impedance

: 6

Dimensions (W 

×

 H 

×

 D) : 110 (4.3") 

×

 293 (11.5") 

×

 192 (7.6") mm

(stand included)

Weight

: 2.0 kg (4.4 lbs) (stand included)

Accessories

: Stand 

×

 2

Screws for stand 

×

 4

Non skid pad 

×

 8

Speaker cord 

×

 2

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