DK Digital LS-400 Owner's manual

Brand: DK Digital

Model: LS-400

Category: LCD TVs

Type: Owner's manual

Thank you very much . . .

. . . for choosing one of our Speaker Systems. This manual is valid for model LS-400 in

various colour combinations. For your own safety and in order to learn all about the

functions available, please read this manual and keep it for future reference. And if you once

sell the unit please include the manual.

www.dk-digital.com

Important Safety Instructions, please Read Carefully!

•

This unit is meant to transmit suitable analogue audio signals. Never use it for any other

purpose or in any other way than described in this manual.

•

When using an amplifier with a rated output power higher than the nominal input power

of the speakers, be very careful. Never exceed the maximum input of the speaker

system, otherwise the speakers will be destroyed.

•

Even if the output of the connected amplifier is lower than the load capacity of the

loudspeaker, an amplifier may not be operated at maximum volume, because that would

increase the risk of “clipping”, i.e. that there can be direct-current voltage at the

output of the amplifier if even only briefly. Direct-current voltage destroys the voice coils

of the loudspeakers.

•

Any time you notice distortion or abnormal sound, immediately reduce the volume

control on your amplifier to a lower setting.

•

Never attempt to open the housings of your speaker boxes or to service the product

beyond that described in this manual. All servicing or repair must be referred to qualified

service personnel authorised by us.

•

So that neither the wood nor the loudspeaker membranes can be damaged, this

appliance must never be operated in damp rooms (e.g. bathroom). The loudspeakers

must also only be operated within closed rooms.

•

Never let children play with the boxes or stick anything into it.

•

Do not leave the boxes in direct sunlight for a long time, otherwise discolouration may

result. Avoid positions with heavy dust or poor ventilation. The unit should not be

exposed to mechanical vibrations or shock.

•

You can use a soft damp cloth to clean the housings. Don’t use strong cleansing

products. NEVER touch the membrane of the speakers.

•

Lay the loudspeaker cable so that nobody can stumble over it.

Positioning the Speakers

You can mount the speakers on a plane and stable surface. The rear surround speaker

boxes can, however, also be hung up at the wall as we have provided its back side with a

corresponding hanging possibility. For a most impressive you should follow these

recommendations:

The spacing between your loudspeakers and the listener will depend on the size of your

listening room. Please place the front speakers at least 2 metres apart left and right of

the centre speaker. The centre speaker should be placed on top or below the TV. The rear

speakers should be placed behind your seating position about 1,5 metre to the left and to

the right. There are rooms where this setup is not possible. As a compromise place the

rear speakers at the back of the room, facing your seating position.

All loudspeakers should face the listeners position and should be on the same level as the

listeners ears.

Take care not to set up the speakers close to a TV set as otherwise this can lead to slight

colour distortions of the TV picture. If that should happen increase the distance between

the speakers and the TV set. Then switch off the television and wait for 10 minutes before

you turn it on again. Any colour distortion should be fixed then. However, the centre spea

ker is magnetically shielded, so it should not cause any problems in the near of a TV set.

Connecting the Loudspeakers to the Amplifier

In order to avoid damage of the speakers or other connected devices, please establish all

connections while the amplifier is switched off.

Bi-Wiring Connection

On the back of the front speaker, there are 2 groups of connection terminals, whose + and –

poles are connected with one another. This means you can connect the speakers using

bi-wiring. The following consideration is behind the “bi-wiring” procedure:

All frequencies are broadcast together in the speaker cable in conventional connections.

However, this means that the low frequencies are broadcast with considerably higher

performance than the high frequencies. This can lead to loss of sound. Separate power

supply through two cables (one for the high frequency and one for the low frequency) can

lead to a noticeably improvement of tone.

If desired, you can control the mid-range/high-range systems and the low tones

separately. For this reason there are four spring clips on the connection terminal. With the

two upper ones, the mid-range/high-range systems are controlled and the lower spring

clips control the lower tones. In the factory, we electrically connected the + and – poles of

the upper and lower spring clips together with bridges. Through these bridges, the speaker

works in the conventional way, i.e. it is connected with the amplifier in a completely normal

way. It is irrelevant whether you use the upper or lower spring clips for this.

If you want to use the bi-wiring procedure, firstly please remove both bridges, with which

the + and – poles of the upper and lower connector groups are connected together. You

then need either 2 speaker cables or a special bi-wiring cable. On the amplifier, connect

both cables to the output of the appropriate channel. Connect the upper connections for the

mid-range/high-range systems with one cable and the lower connections with another

cable for the lower tones.

In phase connection

For optimum sound quality it is inevitable to connect speakers and amplifier in phase. I. e.,

within the respective channel (front right / left, centre, rear right / left)

- the „+ terminal” of the amplifier must be connected to the „+ terminal” of the box, and

- the „— terminal” of the amplifier must be connect to the „— terminal” of the box.

If the speakers are out of phase (i.e. the + terminal of one amplifier channel is connected to

the – terminal of one speaker, and the – terminal of one amplifier channel is connected to

the + terminal of one speaker), the sound will be affected and the speakers may be

damaged.

If the phase is reversed, the surround image will be unstable, and the bass components will

not be clearly reproduced. Correctly connected (“in-phase”) speakers will give you a stable,

well-defined surround output, with a clear, powerful bass sound. Make sure that each +

terminal of the amplifier is correctly connected to the + terminals of the appropriate speaker.

Most speaker cables have one ridged or striped part, to help you distinguish + and —. If you

need to reverse the connections of one speaker to correct the phase, make sure the amplifier

is turned off before you disconnect the speaker. Make sure to connect all speaker boxes with

regard to their position to the correct surround channel output of the amplifier.

Establish connection

To connect the centre and surround speakers remove 2cm of insulation from the

loudspeaker cable. To connect the cable, twist the flex. Then open the loudspeaker clamp ,

stick the bared end of the cable - not insulated parts of the cable - into the opening, and

close the clamp.

You can connect the front speaker boxes using cable with

banana plugs. If you use cable without plugs turn the plastic

screw of the terminal counter clockwise to uncover an

opening within the terminal bolt. Stick the bared end of the

cable - not insulated parts of the cable - (as described

above) into the opening. Then turn the cover clock wise to

lock the terminal.

Please carefully read the instruction manual of the

respective amplifier to learn more about the speaker

connection.

You have paid attention to quality in your purchasing of loudspeakers and you should also

do this when choosing the loudspeaker cable. The cross-section and conductor material

play a decisive role in the later musical pleasure.

Disposal advise

When the operating life of this device has ended it must not be

disposed as domestic waste, but in accordance with national

environmental guidelines.

Support

In case of any problems or malfunctions occur while running your device, you have several

options to get help from our support-centre:

• Telephone (from Germany): 09 00/1393684(Euro 1.89/min)

• Fax (from Germany): 0 18 05 / 00 82 38

• per E-mail: [email protected]

Or visit us on our website (www.dk-digital.com), choose your language and click on

“Support”. Then fill-up the contact form provided there.

Technical specifications

Front Centre Rear

P.M.P.O. power rating 500 watts 250 watts 250 watts

RMS power rating 100 watts 50 watts 50 watts

Impedance 4 ohms 8 ohms 8 ohms

Sensitivity 89 db 88 db 88 db

Frequency response 40 Hz - 20 kHz 60 Hz - 20 kHz 60 Hz - 20 kHz

Dimensions (WxHxD) 220x1045 x 350 mm 545 x 155 x 190 mm 290 x 272 x 160 mm

We reserve the right to correct errors and make technical alterations.

nor excerpts may be reproduced without our prior written permission.

DK digital GmbH

40878 Ratingen

Germany

www.dk-digital.com

DK Digital LS-400 Owner's manual

Brand: DK Digital

Model: LS-400

Category: LCD TVs

Type: Owner's manual

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DK Digital LS-400 Owner's manual

DK Digital LS-400 Owner's manual

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