Behringer Xair18 User Manual

Manual for changing/controlling audio settings of specific research lab’s at the DCC. TSG.dec.2017.

PC Line OUT-R

PC Line OUT-L

PC Line IN-R

PC Line IN-L

Phones Exp-R

Phones Exp-L

Behringer Input-3

Behringer Input-4

MIC IN Subject-1

MIC IN Subject-2

Behringer AUX-1

Behringer AUX-2

Behringer Control-L

Behringer Control-R

Phones Sub-1-L

Phones Sub-1-R

Behringer AUX-5

Behringer AUX-6

Behringer Input-1

Behringer Input-2

Phones Sub-2-L

Phones Sub-2-R

Behringer Main-L

Behringer Main-R

Behringer AUX-3

Behringer AUX-4

Speakers Cabin-L

Speakers Cabin-R

PC

Behringer

Behringer-1-setup TSG

Extra UTP Card in PC connection

IP: 192.168.1.101

Behringer set as DHCP server

IP: 192.168.1.1

Radboud University Nijmegen. FSW/TSG june 2017

USB 2.0 to USB PC connection

Set up audio recording labs.

The sound recording and EEG labs have been equipped with a setup that enables to present audio
stimuli, to record audio responses, to make stimulus recordings and to monitor the quality of the stimuli
and responses.

The mixer that is used for this is the Behringer Xair18.
This is a professional mixer with 18 analog mono inputs,
10 analog mono outputs, Midi in and out, USB connection
for audio-in-out and control, Ethernet for control and
additional features.

The Behringer is controlled by a program built by the TSG called ‘Beer’. Beer enables researchers to set
and store settings for specific experiments. These specific settings have to be loaded at the start of each
new measurement session ensuring that these stay identical throughout all experiment sessions.

Control of the Behringer via ‘Beer’.

-How to use Beer.
The ‘Beer’ program expects the default TSG settings and the devices to be switched on. The ‘Beer’
program is based on Python and will run on our FSW/DCC/BSI research labcomputer
(Start\All_Programs\Behringer).
The available input devices are:
Subject1-microphone. (mono)
Subject2-microphone. (mono)
PC output audio line-out. (stereo)

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The available outputs devices are:
Subject1-headphones. (stereo)
PC input audio Line-in. (stereo)
Subject2-headphones. (stereo)
Speakers. (stereo)
Monitor-headphones. (stereo)
Make sure that the needed devices are connected and switched on. By default the Behringer and the
Speakers are activated already or they are activated when the lab-computer is turned on. Some
microphones should be turned on separately.

Start the program.

First the ‘Beer’ program automatically looks for the Behringer mixer to make a connection (see.get ip:

192.168.1.1). After the connection has been set up the program initializes (resets!) the Behringer
(see.use:192.168.1.1) automatically.
By default all input and output volumes are set at their lowest levels and no selections from input to
output are made. (everything is ‘off’)

Create the settings for your experiment:

At the bottom left you see the available inputs with their corresponding volume setting above this.
The input options are:

-‘mic1’, Subject1-microphone. (mono) To detect and record speech responses. VU-meter shown.

-‘mic2’, Subject2-microphone. (mono) To detect and record speech responses. VU-meter shown.

-‘PC out’, PC output audio line-out. (stereo) To present stimuli or feedback audio. VU-meter shown.
The left top has selectable squares to connect the input below to a specific output on the right.
The destinations here are connected to the noted devices with their individual volume control.

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