Cambridge Audio azur 540R V2.0, Руководство пользователя

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must be situated equidistant from the listener/viewer.
In addition Dolby Pro Logic II playback also requires an extra 15
milliseconds delay to the surround channels only (in addition to any
surround delay set above). This extra delay is part of the Dolby Prologic
II specification and ensures that sound from the surrounds arrives just
after sound from the front reducing the audibility of sound leakage from
the front to the surround speakers. This is necessary as Dolby Prologic
II being an analog encoding process does not possess the complete
channel separation of the DD or DTS Digital systems.
Because the relationship between the Dolby Digital and Dolby ProLogic
II two delays is fixed (15mS extra to the surround channels), it is only
necessary to set the delay in either one of the two modes. The 540R
V2.0 will automatically provide the appropriate delay whenever you
switch to the other mode.
To set the delay times simply measure the distances from the listening
position to the each speaker as shown in the following diagram:
540R V2.0 AV receiver
In the second case the 540R V2.0 displays each speaker type (FL/R
Large to indicate the Front Left and Right as ‘Large’ etc.) each time the
SPK Setup button is pushed. The settings are changed via Volume
up/down and once set wait for a few seconds for the 540R V2.0 to save
the settings and exit the menu.
Note: The 540R V2.0 will force some speakers to certain settings in
some circumstances as below!
The Front Left and Right speakers may be ‘Large’ or ‘Small’ but never
‘None’ as they are always required for any type of music/movie
reproduction.
Bass must always be reproduced by either the Front Left and Right or
Subwoofer channel (or both). Setting the Front Left and Right to ‘Small’
will result in the Subwoofer automatically being set to ‘On’. Setting the
Subwoofer to ‘Off’ will automatically result in the Front Left and Right
being set to ‘Large’.
If the Front Left and Right cannot reproduce low frequency bass a
Subwoofer must be used. Also, setting the Front Left and Right as
‘Small’ will always set the other speakers as ‘Small’ (and the Sub to
‘On’). This is because LFE/ bass information should not be redirected to
the surround channels. With the caveats above, all other speakers can
be ‘Large’ or ‘Small’ or ‘None’.
Step 2 - Delay Times
Because the speakers in a surround sound system are usually different
distances from the viewer/listener the 540R V2.0 incorporates the
ability to apply a variable digital delay to the each of the channels so that
the sound from each appears at the same time at the listening position
for best surround-sound effect. Each pair of speakers (i.e. Front Left and
Right or Surround Left and Right) are subject to the same delay and so
1 1
2
4
3
3
5
1 = Front Left & Right
speakers
2 = Centre speaker
3 = Surround Left & Right
speakers
4 = Surround Back speaker
5 = Subwoofer
Azur AV receiver 23
3m (9ft)
4m (12ft)
2m (6ft)