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Initial setup
This section describes the initial setup of The ACT 4 pre-
amp processor via the front panel screen.
Loudspeaker Settings
The ACT 4 supports a wide variety of loudspeaker layouts
and configuration options. Loudspeaker layout and
individual loudspeaker settings are simple to change by
selecting the speaker icon within the settings page.
Speaker Layout Screen:
To setup the ACT 4 output
configuration according to the particular speaker layout in
the room, simply touch the buttons corresponding to the
room loudspeaker positions. The layout screen indicates the
layout description in industry-standard numeric terms on the
lower right as changes are made. The audio bed section
determines which ear-height loudspeakers are enabled. The
height section selects between top front, top middle and top
rear loudspeakers or none. Upward firing or "dolby enabled"
speakers are selected here as well. Finally, select the
number of actively driven subwoofers in the system (up to
three). Changes are made to the ACT 4 and its audio
output immediately in response to layout changes on this
screen as they happen.
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Document 1000905
Speaker Parameters Screen:
individual loudspeakers in the ACT 4, use the forward arrow
from the speaker layout screen to bring up the speaker
parameter screen.
Speaker Selector:
individual loudspeaker, simply touch the loudspeaker the
graphic layout map on the right side of the speaker
parameters screen. The speaker being adjusted will be
highlighted with a red circle. Audio bed speakers are shown
in blue. Overhead and height speakers are shown in
goldenrod and subwoofers are shown in grey.
Level:
12dB, use the "+" and "-" buttons. The level can be adjusted
up or down in 0.5 dB increments.
Delay:
between the loudspeaker being adjusted and the main
listening position (reference position) in the center of the
loudspeaker setup. As a close approximation, 1mS of delay
corresponds to 1 foot (0.3 meters) of distance. As a
recommended guideline, adjust this setting for each speaker
to reflect the actual distance each speaker is located from
the reference position. For dolby-enabled height
loudspeakers, subtracting approximately 40% from this
delay setting will serve as a reasonable starting point to
account for the extra distance high-frequency height
information travels due to ceiling reflections.
Acurus ACT 4 pre-amp processor USER GUIDE
To set parameters for
To check or adjust the parameters for an
To adjust the relative level of a loudspeaker up to +/-
This parameter is the delay in milliseconds (mS)
Revision 20160608
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