Yamaha Audio KMS-305 User Manual

KMS-305

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Thank you for selecting this Yamaha KMS-305 speaker system.

Natural Sound
Bass-Reflex Type
2-Way Speaker System

PRECAUTIONS

Read these precautions carefully before operating
your speaker system.

● 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.

● This speaker system incorporates a speaker
protector. However, if you will drive speakers with a
high-power amplifier, first decrease the volume to
minimum, then turn the power on, and increase the
volume slowly. If high power output above a certain
level is applied to the speakers suddenly, the
protector will not function and so the speakers will
be damaged.

● 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.

● 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.

CONNECTING 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 commercially available speaker
cables.

Left speaker (A)

Procedures:

Right speaker (B)

➀ Press the tab on the terminal down, as shown in

the figure.

➁ Insert the bare wire end properly into the terminal

hole. [Remove approx. 10 mm (3/8”) insulation
from the speaker cable.

➂ Remove your finger from the tab to allow it to lock

snugly on the cable’s wire end.

➃ Test the security of the connection by tugging

lightly on the cable at the terminal.

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

● Connect the left speaker to the left (marked L)
terminals of your amplifier, and the right 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.

Speaker output terminals
of the amplifier

10 mm

Black (–)

Red (+)

Speaker cable

Press tab

PLACING THE SPEAKER

REMOVING THE FRONT COVER

This speaker system is designed for use in a side
long way.

Left speaker (A)

Note

Though this speaker system is a magnetic shielding
type, there may be an influence on TV picture
according to the type of TV or the placement of the
speakers. In such a case, place the speakers apart
from the TV so that there is no influence on TV
picture.

You can also use the screw holes on top of the
speaker for installing the speakers on the wall or the
ceiling by using commercially available mounting
brackets.

60 mm

A screw with a diameter of 5 mm and
a pitch of 0.8 mm can be used.
(Depth of hole : 8 mm)

Right speaker (B)

110 mm

WARNING

● The required length of a screw differs depending on
the mounting bracket to be used. Select a screw
which is suitable for use with the mounting bracket
and can be fully inserted into the hole on the
speaker.

● Each speaker weigh 5.8 kg (12 lbs. 12 oz.). Do not
attach them to thin plywoods or soft wall surface
materials, as the screws may tear free from flimsy
surfaces, causing the speakers to fall and be
damaged, or result in personal injury.

● Do not fasten the speakers to walls with nails,
adhesives, or other unsound hardware. Long-term
use and vibrations may cause them to pull free.

● To avoid accidents resulting from tripping over loose
speaker cables, fix these to the wall along with the
speakers.

SPECIFICATIONS

Type ......................2 way bass-reflex speaker system

Magnetic-shielding type (EIAJ)

Speaker Unit..................18 cm cone woofer (JA1824)

5 cm cone tweeter (JA05S2)

Input Terminal .............................................Push-type

Nominal Impedance.........................................6 ohms

Frequency Response...........50 Hz – 20 kHz (–15 dB)

Nominal Input Power..........................................100W

Maximum Input Power .......................................200W

Sensitivity ...................................................91 dB/w/m

Dimensions (WxHxD)..................355 x 235 x 242 mm

(14” x 9-

Weight.......................................5.8 kg (12 lbs. 12 oz.)

1

/4” x 9-1/2”)

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.

Right speaker

Notes

● When the cover is removed, take care not to touch
the speaker units with your hands or to exert
excessive force with tools.

●

This bass-reflex type speaker has an opening on the
front side.
Be careful not to obstruct the opening or put some
objects into it. If doing so, the sound will be
unnatural or it may cause damage to the speaker
and/or amplifier.

Built-in speaker protector

This speaker system incorporates a speaker
protector which protects the speakers from
excessive input. Once an excessive input is
applied to the speakers, the protector functions
and cuts out sound output from the speakers. If it
occurs, decrease the volume on the amplifier.
After several seconds, the protector stops
automatically and sound output revives.

Opening

Hole

Front cover

Peg

* Specifications subject to change without notice due

to product improvements.

* Care should be taken not to exceed the input power

values noted above.

VV30820