Focal ASTRAL 16 Manuel D'utilisation page 16

ASTRAL 16
™
U s e r m a n u a l
12. Measure Acoustic Response of Remaining
Positions
Once the first measurement is taken, that position
will be checked indicating successful capture.
Move the microphone to the next position of
the diagram that you wish to measure. Repeat
measurements for all listening positions. With
each measurement, the waveform graphic will
update.
Click Proceed to filter design when done with all 9
or 16 measurements.
13. Target Curve
D
C
E
A
F
B
Once all measurements are complete, you can
visualize measurements of each speaker. You
can customize the target curve for each speaker
by (A) limiting the correction window and (B)
dragging anchor points on the target curve to
desired locations.By default a target curve is
proposed offering a typical cinema curve. It is
possible to save or load target curve through
menu (C). Good target curve design is beyond the
scope of this document, but there are some key
points to remember.
Do not attempt to boost bass of a
•
loudspeaker below its low frequency limit
as this will only lead to high distortion and
likely damage
• High quality speakers usually benefit from
limiting the correction window to
frequencies.
• Ideal curves usually have a slightly downward
slope. A loudspeaker may have a flat amplitude
response on axis, but will rarely be flat off axis.
• Aim for identical target curves between
channel pairs (such as Front Left and Front
Right) to obtain the best spatial imaging. It is
possible to create group of speakers (D) before
adjusting the target curve for this group.
There are different possible viewing options
available (E). Save the Target Curve through the
Menu (C) for use in another channel or for other
future use. Repeat for all channels/group of
channels and then Proceed to Filter Export (F).
14. Export Filters to Astral 16
In this last step, filters created in "Step 13. Target
Curve" are exported to Astral 16 and combined
into the new profile selected "Step 5. Select Base
Profile".
C
B
A
D
Select the "empty" slot 1 (A), give a name and a
description to your new Dirac profile (B). Save your
project for future use (C) before selecting Export
filter (D) and return to Astral 16 Web UI.
15. Return to Astral 16 web UI
A popup has been updated to confirm that you
wish to combine the Dirac Live corrections with
the base profile.
A
low
ASTRAL 16
U s e r m a n u a l
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The Name and Description Target curve can
be changed. We also recommend to select the
correct listening area that you used to make
the Dirac Live corrections (A). Click save (B) to
continue. For corrections made to a zone, options
are not available. Simply click save.
Note that each time you go through the Dirac
Live process, the former filter design gets
replaced. Each time the calibration is run, a
new profile is created with the new Dirac Live
correction.
16. Return to Speakers Page
Now that you are back at the page where
individual speakers can be edited, you will notice
the new Dirac reference profile you named in the
previous step is selected. New columns created
indicate the calculated Dirac Delay and Dirac
Level. No changes can be made to this reference
profile. Should you wish to make changes,
duplicate the profile, make desired changes to
the duplicate, save changes to the profile and the
theater. See "Profiles".
Settings Menu
Astral 16 includes a variety of system wise settings
that are set in this menu that govern behavior of
the unit. Ensure these are set as required for easy
operation of Astral 16 and any attached devices.
These are only accessible to those with Installer
level access or Expert User if assigned by the
Installer.
Triggers
Astral 16 has 4 independent DC voltage triggers
which can be configured to modulate the power/
standby status of connected equipment such as
projectors, source components, or amplifiers.
You may keep the default name for each trigger,
or rename them to something more descriptive.
Each trigger has the following options available:
• Manual Switching: Turn on to enable a button
B
on the remote control interfaces that allows a
user to toggle the trigger manually.
• Auto Switching: Enabled on Wake activates
the trigger when Astral 16 is powered on from
standby. It will not automatically deactivate
the trigger when Astral 16 is placed into
standby. Enabled on Input makes the trigger
available in the Input Menu. When set to Y
™
for an input, the trigger activates when that
input is selected from a remote interface. See
"9. Triggers". Enabled on Preset makes the
trigger available in the Preset menu. When a
preset is selected in which a trigger is marked
Y, the trigger is activated. Note that Auto
Switching trigger behavior will override any
Manual Switching behavior.
• Disabled on Sleep: Select Y if the trigger
should deactivate when Astral 16 is placed
into standby.
• Active State: Select whether the active state
for the trigger is 12V or 0V.
• Delay: You may wish to set a delay of up to 8
seconds. Usually this is done if you are using
triggers to activate amplifiers. If all amplifiers
power on at once, the inrush current could
trip a circuit breaker. Focal amplifier triggers
may be daisy chained so that only once the
preceding amplifier is fully powered does
the following amplifier initiate it's power up
sequence thereby obviating the need for
a delay (or multiple triggers) when using
modern Focal amplifiers.
Parameters
• Downmix zone: define whether the dedicated
downmix outputs feed an audio only zone
or an audio video zone. When A/V, lipsync
adjustment is available in that zone's remote
control functions, and that zone's general
delay can be set using the setting below.
• Audio Control Range MAX: Set the maximum
allowable volume. +6db (default), +3dB, 0dB.
• Volume Dim Level: To quickly attenuate the
volume (but not mute it), a user can click
Volume Dim. Set the level of attenuation here.
Default is -20dB.
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