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Chapter 3 Setup for measurements
3 - Setup for measurements
3.1 What you need to measure your room
To correctly measure your room, you need:
• The ARC 2 Measurement software properly installed. This is included
in the ARC System 2 installer and works as a standalone application.
• A high-quality audio interface with at least one XLR microphone
input with +48V phantom power.
• The ARC 2 Measurement Microphone.
• Microphone stand and XLR microphone cable.
3.1.1 Audio Interface Requirements
To correctly measure your room, you need a high-quality audio interface that
can operate at 48 kHz and can reliably record one channel while playing back
two channels (full duplex operation must be supported).
The ARC 2 Measurement software only supports ASIO drivers on Windows
and CoreAudio drivers on Macintosh. Please check that your audio interface
supports these standard drivers.
IMPORTANT NOTE: considering that the measurement process must be done
at 48 kHz, the ARC 2 Measurement software must set your audio interface
sampling rate at 48 kHz. For this reason, please check that your audio interface
sampling rate is not locked and that 48 kHz is supported and allowed.
The ARC 2 Measurement will try to set the sampling rate to 48 kHz as soon you
select your audio interface. If the audio interface cannot be set to 48 kHz, an
alert message will inform you that the room measurements cannot be taken.
3.2 How to set up for measurements
To properly measure your room, you need to connect the ARC 2 Measurement
Microphone to your audio interface and your audio interface to the speakers.
Usually you will already have the speakers properly connected, so you do not
need to change anything on the speaker connections at all. What is important
is having a pair of outputs of from audio interface going to the speakers with
as direct a path as possible.
3.2.1 Speaker connection
Make sure that your Left (L) and Right (R) speakers are connected directly to a
pair of your audio interface outputs. If anything is present between your audio
ARC System 2
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