Dirac Live For Arcam - Arcam HDA SA30 Manuel

Dirac Live for Arcam

There is a proprietary automatic loudspeaker setup
function built into your SA30 from Dirac Research.
Using a PC/Mac based application, this attempts to set
all the essential speaker settings for all the speakers in
your system. It also calculates room equalisation (Room
EQ) filter values to remove some of the worst effects of
resonant frequencies in the listening room.
Your SA30 is supplied with a calibration microphone,
which should be inserted into a USB socket on a PC or
Mac connected to the same network as the SA30 and
positioned as directed by the Dirac Live for Arcam PC/
Mac application. This microphone picks up the special
calibration tones generated by the speakers when Dirac
Live for Arcam application is run. The SA30 then analyses
the signal and will correct any resonant frequencies in
the room which need control by filtering.
To help the system be as accurate as possible when
performing Dirac Live for Arcam setup, there are a few
guidance rules that should be followed:
Minimise any background sounds in the listening
room and other nearby rooms.
Close all windows and doors in the listening room.
Turn off all fans including air-conditioning systems.
Mount the microphone on a tripod or similar.
Position the set up microphone pointing upwards at
roughly head height in the normal listening position.
It is not necessary to point the microphone directly
at the speaker generating the test tone. (It helps if
you are able to position the microphone exactly
where your head would normally be for listening,
with the microphone in direct unobstructed view of
all speakers.)
When activated, a calibration tone is played through
each channel of the SA30. The calibration tone cycles
round each of the speakers multiple times as the
different parameters are calculated.
Note: By default, Room EQ is not applied to any of the
source inputs.
You should enable Room EQ on inputs you think benefit
from this feature, as required, by listening when playing
typical source material through each input. After being
calculated, this is enabled from within the setup menu
or by the front panel or remote control button.
While room equalisation can help to reduce problems
with listening room acoustics, it is usually far better to try
to solve these problems with the room directly. Proper
loudspeaker positioning, acoustic wall treatments and
moving the listening position away from walls should
produce far better results overall. However it may be
difficult to do this in a home environment, so Room EQ
is your next best choice.
Problems
The Auto Speaker Setup function is normally very
accurate but occasionally false results can be generated.
Problems may be as a result of:
external sounds or rumbling/handling noises picked
up by the microphone
sound reflections off hard surfaces (e.g. windows or
walls) close to the listening position,
very strong acoustic resonances within the room,
obstacles (such as a sofa) between speakers and the
microphone.
If you are still experiencing difficulties or you wish to
have the most accurate results for ultimate surround
performance, we recommend using the manual
method of establishing speaker distances and levels.
Downloading the Dirac Live for Arcam
application
To download the Dirac Live for Arcam PC/Mac
application and quick start guide, please visit:
live.dirac.com
Using Dirac
You can store up to three Dirac EQ curves in the SA30.
Each input can use a different curve, for example a
"Movie" curve on the BD input and "Music" curve on the
CD input.
This can be set on a per input basis using the
on the front panel or key on the remote.
Alternatively use the Dirac menu in the Audio settings
menu to set the curve for each input. See "Dirac Curve"
on page EN-20.
Note: When Dirac is run for the first time the curve will
be applied to all inputs. Subsequent curves will not
be automatically applied, use the methods above to
choose the required curve for the input in question.
When Dirac is being used the icon will be shown
on the display.
EN-15
key
EN