Bedienungsanleitung Arcam AV888 (Seite 38 von 74) (Englisch)

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It is essential that you enter some information into the

Setup menus about your speaker conguration. is

allows the unit to process any surround sound digital

source to exactly match your system and give you the

ultimate surround sound experience.

ere are three pieces of vital information which are

outlined in the sections: ‘Speaker Types’, ‘Speaker

Distances’ and ‘Speaker Levels’.

e way you enter this information manually into the

unit is given later in the ‘Setup Menus’ section on page

38. e settings can also be established automatically

using the Arcam Auto Speaker Setup function. However

it is important to understand why these speaker settings

must be entered, which is why this section is presented

rst.

essential

setup

Speaker types

You need to set the type of speakers that you have

connected to your AVR500/AVR600 (or connected

indirectly to your AV888):

Large capable of full frequency range reproduction

Small not capable of full frequency range

reproduction at the low frequency end

None speaker not present in your configuration

e terms ‘Large’ and ‘Small’ do not necessarily relate to

the physical size of your speakers. As a rule of thumb,

if a speaker cannot reproduce a at frequency response

down to about 40Hz (and very few can!) it is oen better

to consider them as ‘Small’ for setup purposes of home

cinema.

When a speaker is set to ‘Small’, very low frequency

sounds are redirected away from that speaker to a ‘Large’

speaker or a subwoofer, which are far better suited to

reproducing these low frequency sounds.

Note that it is not possible to set all speakers to

‘Small’ unless there is a subwoofer in your speaker

conguration. If you do not have a subwoofer, you will

be forced to set your front speakers to ‘Large’.

(Advanced users may wish to automatically override the

‘Small’ speaker setting for purely stereo music listening

when not watching movies. is can be achieved in the

‘Input Cong.’ menu – see page 40.)

Single Surround Back speaker

If you have just one Surround Back speaker in your

conguration instead of two, ensure it is connected to

the SBL speaker connector and set Surr. Back L/R in

the Spkr Types menu to either ‘1 Small’ or ‘1 Large’ as

appropriate.

Crossover frequency

If you have set any speakers as being Small, then you will

be required to set a value for the crossover frequency.

is is the frequency below which signals are ltered

away from these Small speakers and redirected to Large

speakers or the subwoofer (if present). A frequency of

80Hz is oen a good starting point, however you will

probably have to experiment with dierent values to nd

the best value for your system or consult your speaker

handbook.

MCH sub level

If a subwoofer is present, this setting allows for a 10dB

compensation on the subwoofer output when using the

MCH input as required by many DVD-A players with

audio outputs.

Use Surround Back channels

If not used in the main zone, it is possible to assign the

Surround Back channels to bi-amp the Front Le/Right

channels or to provide an amplied output to Zone2.

Speaker Distances

It is essential for the distance from each speaker to the

listening position to be accurately measured and entered

into the ‘Setup’ menu. is ensures that the sounds from

the various speakers arrive at the listening position at

the correct time to recreate a realistic surround eect.

e distance can be entered in centimetres or inches.

Speaker Levels

Finally the levels of all the speakers in the system need

to be adjusted to match each other at the listening

position, again to create a proper surround eect. To

help with this the AVR500, AVR600 or AV888 can

generate a test noise for each speaker which should be

measured with a sound pressure level (SPL) meter. e

meter should be set to ‘C’ weighting and slow response.

e level of noise measured at the listening position

from each speaker should be adjusted on the Speaker

Trims page of the Setup menu so that the meter reads

75dB SPL. It does not matter what the system volume

setting of the AVR500, AVR600 or AV888 is before

turning the test noise on as the volume setting is over-

ridden for the duration of the speaker noise test.

ere are several basic SPL meters on the market at

reasonable prices aimed at home cinema enthusiasts.

Check your local technology store, search online or ask

your dealer.

If you do not have an SPL meter, you can try to adjust

the noise level of each speaker by ear. In this case it is

not possible to adjust the speakers to the absolute 75dB

SPL volume level, but you should aim for all speakers

sounding equally loud. Setting speaker test noise levels

by ear is not recommended as it is very dicult to do

accurately, but is oen better than doing nothing at all!

Before you use your AVR500, AVR600 or AV888 it is

essential that you enter some information about your

system conguration into the Setup menus.

Many of the inputs have several dierent connection

types available, for example, HDMI or component

video; HDMI, digital or analogue audio. It is necessary

to set the connection type used for each input by setting

the Video Source and Audio Source options in the Input

Cong. menu (see page 41). ese options must be set

for each input.

e default for both audio and video sources is HDMI.

If another connection type is used, there will be no

sound or picture from the source until the Video Source

and Audio Source menu items are correctly set.

Arcam AV888 Seite 38

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