Operation Manual
Powering the XL8 system 45
DL461 Router
Operator Manual
Powering the XL8 system
The following details the recommended power up and power down procedures for the 
XL8 system.
>> To power up the XL8 system
Important Note:
DO NOT switch on the speaker sub-system until after the start-up of the XL8 
system has been completed.
After all XL8 system interconnections have been made (see Chapter 30 “Panel 
Connections”), start up the XL8 system:
1 Make sure that all of the XL8 system equipment is switched off, that is, the XL8 
Control Centre, speaker sub-system, DL431 mic splitters, DL451 modular line I/O 
units, DL461 routers and DL471 DSP units.
2 Switch on the XL8 Control Centre (see “To switch on the XL8 Control Centre” on 
page 46).
3 On the XL8 Control Centre, move all of the monitor and master channel faders to 
the minimum position and mute all of the master channels. The master channels 
can be found in the mix and output fast zones (see “XL8 control surface” on 
page 7).
4 Switch on the DL431 Mic Splitters.
5 Switch on the DL451 Modular I/O units.
6 Switch on the DL471 DSP units.
7 Switch on the DL461 Routers.
8 After the status LEDs (top of each GUI screen on the XL8 Control Centre) turn 
green, switch on the speaker sub-system.
9 Switch on the audio source and start playing the audio.
10 On the XL8 Control Centre, check that the audio inputs are routed to the master 
channels. Then, unmute the master channels and gradually increase their faders, 
while listening to the sound levels from the speakers.
If there are no sounds at all from the speakers when the faders are at maximum, move 
the faders to below the 0dB level and check if the audio is muted somewhere along the 
input paths and also check that the individual speakers are switched on. If there is still 
no sound from the speakers, contact Midas Technical Support.
>> To power down the XL8 system
Important Note:
BEFORE switching off any of the XL8 system components, make sure to mute 
the audio from the speakers and switch off the speaker sub-system.
1 Mute the audio from the speakers and switch off the speaker sub-system.
2 Switch off the DL431 Mic Splitters.
3 Switch off the DL451 Modular I/O units.
4 Switch off the DL471 DSP units.
5 Switch off the DL461 Routers.
6 Switch off the XL8 Control Centre (see “To switch off the XL8 Control Centre” on 
page 47).










