Anthem Room Correction (Arc™) Setup; Arc: Speaker And Computer Connection; Arc Status Led - Martin Logan Illusion ESL C54A Mode D'emploi

A N T HE M R O O M C O R RE C T IO N (A RC™ ) SETU P
NOTE: The full procedure for running ARC room correction
is outlined in the ARC manual. The ARC kit is sold separately.
Your speakers are designed with an active woofer system
including Anthem Room Correction for optimizing your
speaker's low-frequency output within your room. The ARC
system employs your computer*, connected via USB cables to
a microphone and your speakers. ARC processes information
from multiple data points and configures the optimal solution,
achieving pinpoint-accurate room response.
ARC utilizes multiple measurement points, at least five—but
up to ten—individual data positions, allowing ARC to learn the
individual characteristics of your room. ARC software employs
your computer's processor to calculate correction curves for
each measurement point, substantially minimizing the round-
ing errors of less sophisticated "calculators", like those used
in standard room equalization systems. Additionally, ARC
software is capable of calibrating itself to the individual micro-
phone included in the kit, eliminating interference that would
otherwise skew the data.
Although ARC is designed to adjust the woofer's output to
minimize sonic anomalies caused by room interactions, it is
always recommended to use traditional methods to achieve
a flat response before implementing digitally based room cor-
rection. Remember, speaker placement is one of the most
influential parameters when dealing with anomalous low-
frequency room interactions—listening position is equally
important to bass response but is often dictated by other fac-
tors that are more difficult to change.
ARC is not a replacement for other room correction systems
designed to optimize multi-channel audio systems across the
entire frequency range. When beginning the task of optimizing
an audio system's performance, the first step should always be
proper setup of the front, center, and surround speakers. Proper
setup of these speakers requires proper positioning, toe in, and
(if available) adjusting a speaker's built-in bass level controls.
The next step should be running ARC to adjust the individual
speakers active woofer output to account for room interactions.
Only after proper setup of speakers and/or subwoofer(s), includ-
ing running ARC on the individual speaker, is it time to run your
processor's full-range room correction system to help balance
overall system performance within the room.

ARC: Speaker and Computer Connection

For ARC instructions, please visit MartinLogan.com.
NOTE: If you own a PBK (Perfect Bass Kit), you can use it to run
ARC on your speakers! The PBK microphone will work with the
ARC-2 software used to measure your speakers. However, please
note, ARC microphones are not compatible with the PBK soft-
ware used with your subwoofer.
• Before running ARC, setup your speakers by adjusting
speaker placement, toe-in, and, if necessary, the rake
(tilting the speaker backward and forward).
• During measurement ARC overrides the settings of the
Bass and Mid-Bass controls. These controls do not effect
ARC measurements. After the ARC correction curve has
been uploaded to the speaker these controls can be used
to fine tune the speaker's performance.
• On the rear panel of your speaker is an RJ-45 (Ethernet
style) port labeled "ARC Setup Speaker Link". Use an
Ethernet cable to tether a stereo pair of speakers together by
connecting these RJ-45 ports. This allows you run ARC mea-
surements on a stereo pair of speakers while only having
to run the ARC software once. Please note, tethering your
speakers together is not required and will not change the
final measurements. You can run ARC separately on each
speaker—you will just need to run the ARC software twice.
• On the rear panel of your speaker is a mini-USB port
labeled "ARC Setup Input". Use a mini-USB to USB-A
cable to connect the speaker to your computer*. Either
one of speaker can be used for this connection.
• The ARC microphone will connect to your computer*
using a mini-USB to USB-A cable.

ARC Status LED

The ARC Status light indicates the following statuses:
• No color: ARC is off.
• Solid Green: ARC is on. Correction filter is installed.
• Blinking Red: ARC is on. No correction filter installed.
• Solid Red: Computer connected to USB input or speak-
ers connected via ARC Setup Speaker Link.
*NOTE: Please refer to ARC manual and related instructions for
computer compatibility information when running ARC.
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