Arcam ALPHA AV50 User Manual

Page 10

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Dolby 3 Stereo feeds sound information through front
speakers. (L, R & C), but not rear speakers. You
should use either this mode or stereo mode for non
surround encoded video sources. Stereo mixes vary

so that it is worth trying this and STEREO mode to see
which one you prefer. If your system has no rear
loudspeakers, use this mode for surround encoded
material.

STEREO is real stereo. For optimal Hi-Fi sound quality

the Dolby Surround processing circuits are actually

bypassed when switched to STEREO. This prevents

the stereo signal being affected by unnecessary circuits
and retains the maximum fidelity. Use Stereo for your

regular hi-fi sources or for non surround encoded video
material.

CINEMA: Switching on Cinema EQ (Equalisation)
reduces the treble output of the centre channel.
Cinema EQ can improve films
recorded with excessive treble and
sibilance.

The

LCD

display

CINEMA EQ legend will illuminate

when this mode is on.

available effects: None, HALL or
SIMULATED. This feature is
useful to enhance non-surround
encoded sources.

HALL switches in a reverberation

effect giving added ambience
through

the

rear

channels.

SIMULATED provides a simulated
surround effect sound. The HALL
or SIMULATED legend on the LCD
display on the front panel will
indicate which effect is currently
selected. You can trim the amount
of EFFECT by use of the rear +/-
level buttons (See ®). NB:
Selecting one of the EFFECTS will
override any Dolby mode selected.

CENTRE OFF: Switches the

centre channel off or on. Switching
the centre channel off is also

useful for Karaoke and for nulling
out

u n w a n t e d

s p o r t s

commentators! This function is not
available in STEREO MODE or during set up. In Dolby

MODE the MUTE and CALIBRATION legends
illuminate and CENTRE flashes on the LCD display. In
effects or EXT DECODER (PROCESSOR) modes
MUTE illuminates and CENTROashes. It cannot be
selected if the main MUTE, ®, has already been
selected.

DISPLAY: This button switches off the front panel
display.

REAR OFF: Switches the rear channel off or on. Useful

to demonstrate the effectiveness of the surround effect.
This function is not available in STEREO or Dolby 3
Stereo MODE or during set up. When selected MUTE

illuminates and SURR flashes on the IXD display. It
cannot be selected if the main MUTE, ®, has already
been selected.

IdB steps. This function is not available in STEREO or
EXT DECODER (PROCESSOR) mode.

® REAR +/-: Trims the level of the rear speakers in 1 dB

steps. This function is not available in STEREO,

DOLBY 3 STEREO or EXT DECODER (PROCESSOR)
mode.

When any of the +/- buttons are pressed the current level is
shown on the LCD display. The level display is blanked after

10 seconds if no further adjustments are made. The main
LEFT/RIGHT and CENTRE or REAR MUTE are cancelled

when these buttons are pressed. The settings are common
for the Dolby modes. Individual settings can also be made
for both the HALL and SIMULATED effect modes. The

range adjustment is -12dB to +6dB for Dolby modes and -
12dB to +15dB for the effects modes.

Note: Not all films are encoded for

surround identically. It is useful to trim
the rear or front levels slightly for some

recordings.

® RESTORE: Restores the AV50 to

the condition saved in the set up
mode. This is very useful if the
centre and rear levels have been
adjusted aftenwards as it restores
them to the saved values. The
operating mode and any functions
such as Cinema EQ that were
saved during set up are also
restored. The RESTORE legend will
illuminate for about 3 seconds.

Note: To enter the set up mode press
Restore quickly followed by + (mode), see

Set Up Mode selection for more details.

sound to all loudspeaker and
preamp outputs. MUTE flashes on
the LCD display.

the amplifier; this drives the

motorised volume control on the

front panel. Note that a volume up

or down command from the remote
will automatically un-mute the
amplifier if MUTE is on.

The following buttons on the remote control handset have no
function on the AV50. This is because the remote handset
can also be used on the Arcam Xeta One and Xeta 2 home
cinema amplifiers.

SHIFT can be used simultaneously with the VOLUME,
MUTE, POWER or INPUT SELECTOR buttons to control
functions on the Arcam Delta Black Box 500 outboard digital

to analogue converter unit.