Dali Evidence C70 Manual de usuario

OWNERS MANUAL

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THANK YOU FOR

CHOOSING DALI

We know you cant wait to hear your new DALI loudspeakers, so well save the more

technical stuff until later. That way, youll have something to read once your system is up

and running.

ut first, unless you are experienced and confident in hi-fi matters, please take the time to

read at least the sections on CONNECTIONS and PLACEMENT, before wiring your new

DALI loudspeakers to your system.

It is the goal of this manual to assist you in obtaining the finest possible performance from

your new DALI loudspeakers. If additional assistance is required, always feel free to contact

your authorised DALI dealer.

STEREO AND SURROUND

CONNECTION

The loudspeaker carton indicates whether the

speaker inside is Left or Right or Centre. Position

them correctly.

Always turn your amplifier off before connecting

or disconnecting any cables. Always use equal

lengths of cable for the left and right speakers.

Cable should be connected between loudspeaker

and amplifier, red plus (+) terminal to red plus (+)

terminal and black minus (-) terminal to black mi-

nus (-) terminal. It is important that the connections

are made correctly and in phase. Incorrect, out-

of-phase connection will result in a diffuse stereo

image and weak bass.

Your DALI Evidence loudspeakers have two pairs

of terminals. If you do not choose to use bi-wiring

or bi-amping, make sure that the enclosed metal

straps are in place and tightened by hand, one

connecting red terminal to red terminal, the other

connecting black terminal to black terminal. For

normal use, connect only one terminal pair to the

amp as shown in (Fig. 1).

In a surround system, connect centre, front and

rear surround loudspeakers to the surround amp

as shown in (Fig. 2).

Fig. 1. Normal Stereo Connection

Fig. 2. Surround Connection

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BI-WIRING AND BI-AMPING

We recommend bi-wiring or bi-amping for

improved sound quality.

To bi-wire or bi-amp, remove the metal straps

before going on to the next steps. The top termi-

nal pair on each speaker connects to the high

frequency crossover section and the bottom ter-

minal pair connects directly to the low frequency

crossover section.

To bi-wire (fig. 3), connect cable from one pair of

terminals on each speaker to the amplifiers out-

put terminals. Then, connect another cable from

the second pair of speaker terminals to the SAME

terminals on the amplifier.

To bi-amp (fig. 4), two identical stereo amplifiers

should be used. Connect cable from the bass

terminals of the left speaker to the left channel of

one of the amplifiers. Connect cable from the

bass terminals of the right speaker to the right

channel of the same amplifier.

Connect cable from the high frequency terminals

of the left speaker to the left channel of the second

amplifier. Then, connect cable from the high

frequency terminals of the right speaker to the

right channel of the second amplifier.

i-wiring offers improvements in the areas of

openness and reduces intermodulation distort-

ion. i-amping offers further improvements in

these areas with the added benefit of increased

dynamics.

Tighten all connections securely so that the cable

cannot slip out. Make certain that no loose

strands of wire are sticking out. Wire connected

to a terminal must never touch wire connected

to any other terminal.

Cable quality and design do make a difference. uy the best cable you can reasonably

afford. In this simple way, you can raise the performance of your system to a higher level.

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PLACEMENT

Fig. 5. Ideal height for listening

Fig. 6. Centre speaker placement

Fig. 7. Placement of stereo/surround

front speakers

Even small differences in the positioning of

loudspeakers in a room can have significant

impact on performance, especially on soundstage

focus and bass quality.

DALI loudspeakers are capable of exceptional

performance in these and other crucial areas, but

you must experiment with placement in order to

find the optimum position.

Unfortunately, there are no hard and fast rules to

follow, but here are a few guidelines.

There should be no objects between the speakers

and the listening position. Obstructions to the free

passage of sound cause uneven frequency

response and poor stereo imaging.

The distance between the Left and Right speaker

and between each speaker and the central

listening position should be identical. While DALI

loudspeakers provide excellent performance at

positions off to the side, for serious, critical

listening we strongly recommend a central

listening position.

DALI loudspeakers should face directly ahead,

with no toe-in (Fig. 7).

The DALI Evidence centre speaker is specifically

tuned for placement near the large, flat surface

of a TV screen. The DALI centre speaker should

be placed directly above or below the television

with the speakers front edge along the same line

as the TV screen (Fig. 6).

The front panel of the DALI centre speaker should

be along the same line as the front panels of your

left and right front speakers as seen in (fig. 7).

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THE LISTENING ROOM

Your DALI loudspeakers have been designed to

convert the incoming electrical signal to acoustic

energy as accurately as possible. ut speakers

are only one link in the audio chain which begins

with the quality of the recorded material, the

turntable/CD player/tuner/tape player signal

source, interconnects, the amplifier, speaker

cables and finally ends with the listening room

itself.

Loudspeakers perform best in rooms with normal

furnishings such as bookshelves, flowers, vases,

and soft furniture. Removing a vase, opening a

curtain slightly or moving a chair a few inches can

actually make a big difference. Try to avoid large,

hard, flat surfaces near the speakers.

If the sound is on the bright side, closing curtains

may help. The heavier the curtain, the greater the

effect. Rugs or carpets will damp unwanted

reflections from a hardwood floor.

The quality and quantity of bass depend on the

size and shape of the room. Experiment with

various positions. ass will be reinforced by

placement near side or rear walls, so, naturally,

corner placement offers substantial bass boost.

Find the position that offers the best balance of

sound for your room and musical tastes.

When you have found the best position, make

certain that the loudspeaker is perfectly level and

cannot rock back and forth. Spikes may be used

to couple the speaker more effectively to the floor.

Spikes are especially recommended on surfaces

with thick carpeting. Spikes will generally tighten

up bass response and sharpen up the focus of

the stereo image.

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POWER HANDLING

The power handling of a loudspeaker is very much

dependent on the type of music it is called upon

to reproduce at any given time. Since a music

signal or film soundtrack simultaneously consists

of a broad range of frequencies, it is not possible

to define maximum power handling in meaningful

terms.

In the real world, large amounts of clean,

undistorted power from a big amp is better than

the distorted output of a small amp pushed beyond

its limits. More speakers are damaged by small

amps working too hard, than by big amps coasting

along.

Turning tone controls up beyond their neutral cen-

tre position greatly increases power demands.

Tone controls are intended for occasional use to

improve older recordings or bad recordings. We

strongly advise against using them to compensate

permanently for weaknesses elsewhere in the

audio system. Experimenting with loudspeaker

placement may be all it takes to achieve a much

more musical result.

Under normal conditions, overloading is heard as

distortion (clipping) and a loss of clarity. If you

always keep the level below this point, there will

be nothing to worry about.

SURROUND SOUND

Adjusting surround levels

Follow the instructions included with your surround amplifier, match power levels so that

all speakers sound equally loud at the listening position. An accurate Sound Pressure

Level metre will make system calibration easier and more precise.

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DYNAMICS

Unfortunately, too much attention is focused on the ability to play LOUD. Much more

important for your musical and cinematic enjoyment is the ability to convey a natural sense

of musical and home theatre dynamics. Dynamics is the capacity of the system to reproduce

a sudden change in level (up or down) rapidly, cleanly and accurately. A system with good

dynamics will present a realistic sense of the weight and scale of the musical event or film

soundtrack even at low volume settings.

Try listening to your system with the volume turned down. This is a far tougher test than

playing flat out at full power.

BREAK-IN PERIOD

A loudspeaker is a mechanical device and as such requires an extended initial period of

normal use during which you will notice a gradual improvement in sound quality.

Wear is not a problem with DALI loudspeakers, regular use will only extend their life.

After a long period without use, the speakers may need a short break-in period again.

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USEFUL NUMBERS

There are lots of measurements which can be carried out on loudspeakers, not to mention

a confusing number of incompatible methods by which these measurements can be

executed. ut, in terms of saying something meaningful about how a given loudspeaker

will actually sound, only a handful of data specifications are of any real use. You should

pay special attention to specifications for sensitivity and impedance.

Sensitivity is an indication of the sound pressure level which the speaker can generate for

a given input power. High sensitivity means that you can reproduce dynamic passages

without spending a fortune on a high-powered amplifier.

The linear impedance of DALI loudspeakers offers ideal stress-free operating conditions

for amplifiers.

Model:

Frequency response +/- 3 dB [Hz]

Impedance [ohm]

Bass reflex system resonance [Hz]

Crosso er frequency [Hz]

Recommended amplifier power

(8 ohm) [W]

Sensiti ity (@2,83V/1m) [dB]

Max. SPL [dB]

Placement

Recommended distance from rear wall

[cm]

Height [cm]

Width [cm]

Depth [cm]

Weight [kg/lbs]

EVIDENCE 470

35 - 29000

550

3000

30 - 200

111

Floor

50-120

97.0

21.5

31.5

21 / 46.3

EVIDENCE 870

35 - 29000

600

3000

30 - 500

113

Floor

50-150

104.6

24.4

36.8

29 / 63.9

EVIDENCE C70

50 - 22000

2700

40 - 150

113

TV / Stand

16.0

50.0

29.8

8.2 / 18.1

EVIDENCE 370

46 - 27000

45.5

3700

40 - 150

87.5

107

Stand / Shelf

10-60

37.0

21.0

26.2

7.9 / 17.4

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