Genelec Loudspeaker Manager (GLM) 4 - System Operating Manual
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9.2 Using a USB power supply
The hardware volume controller can also be used for adjusting the sound level when the computer
is detached from the GLM adapter. When this is done, the GLM adapter must be powered with a
standard USB power supply. The voltage output of the USB supply is 5 VDC.
To use an external USB power supply, remove the USB cable from the computer and attach the
cable to a USB power supply, as shown below.
9.3 Level Control with GLM Cabled Volume Controller
The monitoring level can be controlled without a computer. GLM volume controllers are available
for this. The cabled GLM volume controller connects to the GLM adapter.
When the volume controller has been connected to the GLM adapter and the computer is
connected, the system level fader disappears in the GLM main window and is replaced with the
icon of the volume knob. The system level is controlled only with the volume knob as long as it is
connected to the GLM adapter.
Figure 40. Hardware level controller
9.4 Connecting the GLM Volume Controller
The volume controller is connected to the GLM adapter via 3.5 mm jack showing a level control
triangular sign. See the bottom of the GLM adapter for more information.
Caution: Be sure to turn the volume controller fully counterclockwise (level down) before
connecting the volume controller to the GLM Network Adapter as the setting on the volume
controller will be applied as soon as the controller is connected.
