Operation Manual
22 Chapter 6: Operation
DL431 Mic Splitter
Operator Manual
Adjusting a channel
The following instructions show you how to adjust a channel on the DL431 Mic Splitter, 
and are in the recommended order of operation, as follows:
•Select mic amp (A or B).
• Select a channel.
• Switch 48V phantom voltage on/off.
• Switch 30Hz filter on/off.
• Adjust the gain.
>> To select a mic amp
In the mic amp select panel (see “mic amp select panel” on page 4), press A or B to 
select the mic amp you want. The button will illuminate to indicate selection.
>> To select a channel
In the analogue output metering section (see “analogue output metering section” on 
page 6), select the channel you want by pressing its SELECT button. The button will 
illuminate to indicate selection.
>> To switch on the 48V phantom voltage
With your channel selected, as shown on the LCD screen, press 48V in the control panel 
to switch the 48V phantom voltage on/off. The red 48V LED in the channel’s panel of 
the analogue output metering section (see “analogue output metering section” on 
page 6) will illuminate when the 48V phantom voltage is on.
>> To switch on the 30Hz filter
With your channel selected, as shown on the LCD screen, press 30Hz in the control 
panel to switch the 30Hz filter on/off. The green 30Hz LED in the channel’s panel of 
the analogue output metering section (see “analogue output metering section” on 
page 6) will illuminate when the 30Hz filter is on.
>> To adjust the gain
With your channel selected, as shown on the LCD screen, adjust the gain steps control 
knob on the control panel to achieve the desired gain. The current value will be shown 
on the LCD screen.
Monitoring a channel
You can listen to a channel on a pair of headphones. To do this, plug the headphones 
into the phones socket of the channel monitor panel (see “channel monitor panel” on 
page 5). Adjust the signal level to suit, using the level control knob.










