Handleiding Arcam SoloSub (pagina 7 van 60) (Nederlands, Duits, Engels, Frans, Italiaans, Spaans)

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E-9E-8

English

Solo sub and speaker

positioning

e advice given here is a general

guideline for setting up speakers. Refer

to the documentation supplied with your

speakers for more precise information. Visit

www.dolby.com for usefuI information on

listening-room layouts.

Room acoustics

Your room’s shape and how it is furnished

will aect the sound you hear. For instance,

too many bare surfaces may cause a

harshness to the sound. Carpets, wall-

hangings and curtains can all help.

If you have a choice of listening rooms,

avoid one that is perfectly square or has one

dimension exactly twice another. Such a

room can aggravate resonances that colour

the sound.

e closer you place a speaker to corners

and the intersection of wall and oor or wall

and ceiling, the stronger the bass output,

which may over-emphasise the bass. Moving

a speaker just a few inches can sometimes

make a big dierence.

Speaker setup

Proper speaker placement is the key to

achieving the best home theatre sound

(see diagrams). As a rough guide, speakers

should be placed on rigid stands about 15cm

from the rear wall and at least 60cm from

any side wall.

Speakers should never be placed on the oor

(unless they are oor-standing speakers),

or in corners. Speaker drivers should be at,

or a little above, ear level when seated. If

possible, centre your seating area between

the surround speakers.

Sound will depend on the acoustics of

the listening room so experimenting with

speaker positioning is very worthwhile.

Subwoofer

e location of the Solo sub will aect

the overall sound quality. Placing it next

to a wall or in a corner will oen boost

eciency and give a cleaner low bass

sound. However, all rooms react dierently

and we recommend that you experiment

with positioning by allowing at least 15cm

clearance between the walls and the unit.

Speaker stands

e more rmly a speaker is held, the better

it will sound. We recommend the use of

rigid metal stands of 40–60cm height.

Ensure that the stands and/or speakers do

not wobble. Properly damped stands that

do not ‘ring’ when tapped with a pencil, will

bring out the best in a speaker.

Solo sub used with a home cinema

0˚

90˚

110˚

22˚

30˚

calibration

e Solo sub has two roles: rstly to

reproduce accurately and with sucient

power the sub-bass that other ‘smaller’

speakers cannot; and secondly to reproduce

the ‘.1’ or low frequency eects (LFE) track

of 5.1 or 7.1 material.

For optimum results, the Solo sub must

be set up in the correct relation to the

other speakers in your system. e two

relevant controls are the crossover point

and the volume level. e crossover point

establishes the frequency below which

signals are redirected away from ‘small’

speakers toward the subwoofer. Setting

the volume level ensures signals that are

of equal volume achieve the same sound

pressure level no matter what frequency

they are or which speaker they come from

(i.e. subwoofer or satellite speaker). In most

surround-sound systems, two crossovers

are available: one in the surround-sound

decoder and one in the Solo sub.

To get the optimum sound in a variety of

systems, the Solo sub allows these controls

to be used independently for systems with

‘Large’ front speakers and an LFE output

from the surround-sound decoder.

Crossover frequency

In most systems, a XOVER FREQ point of

85 is recommended.

If your speakers are very ‘small’ (and thus

cannot reproduce much bass) you might like

to set the crossover point higher than this

gure to allow the Solo sub to do more of

the work. However, be aware that the higher

the crossover point, the more directional

the low frequency sounds, thus the more

easily identiable is the subwoofer’s physical

position.

If your speakers can reproduce reasonable

bass, you can try a lower crossover point.

Experimentation and listening will guide

you to the right spot.

Crossover Q

e XOVER Q setting controls the slope

of the trace beyond the cuto frequency, in

dB/octave. As a rough guide, a XOVER Q

setting of 1.1 is recommended.

e aim is to make a ‘mirror image’ match

with the slope of the high-pass lter. A steep

cut-o of the high-pass lter from the sound

processor/receiver should be matched by a

steep cut-o of the low-pass lter from the

Solo sub.

Similarly, if the sound processor/receiver

provides a more gradual cut-o, the

XOVER Q setting should have a lower

value.

Volume

Accurate volume setting for a subwoofer

ideally requires specialist measuring

equipment such as a Real Time Spectrum

Analyser or RTA. A regular Sound Pressure

Level (SPL) meter will not work for this!

For most systems though simple

experimentation by ear will suce. Start

with a medium setting (6) and experiment

with VOLUME until low frequency sounds

can be heard as part of the main sound and

not traceable to the subwoofer directly.

Most sound processors or receivers allow

Sub levels to be trimmed ‘on the y’ to

counter excessively high or low levels from

particular source material.

Phase

e PHASE button has two settings: 0°

(button out) and 180° (button pushed in).

A phase delay may be used to counteract

the eect of sound waves from the Solo sub

interacting with and partially cancelling

out or unduly emphasising sound from

the satellite speakers. is eect depends

critically on the relative positioning of

subwoofer and satellite speakers and

can also be remedied by relocating the

subwoofer a short distance. e phase

setting is available if relocation is not

possible or impractical.

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Crossover frequency Hz Crossover frequency

Arcam SoloSub Handleiding

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