6
6. Powering up / down
To switch on / off your DA 428, please follow the instructions:
1. Apply power supply connection (90 - 250 Volt / 50 - 60 Hz) on DA 428 (if the unit is
switched to power mode „Always On“, it is switched on now) – „lock“-function can be
active!
2. Press for a very short time the OK-button to switch on the DA 428
3. To switch off the DA 428, press for 1 second the left arrow key and than the OK-button.
If the unit is locked, please disconnect the power supply connection to switch off the
DA 428.
Note!
Switch on the DA 428 when all connected components are switched on and muted
previously to avoid an unwanted sound reproduction. Because the DA 428 can be in
„lock-function“ for rental purposes that means the unit may not react on changes on the
control panel (depending on adjustment before) and this can cause an immediate
reproduction when switching it on. Therefore it is necessary to mute all connected
devices previously.
During power on for the very first time, Preset 1“ is loaded! More information about the
initial state you can find on page 3.
6.1 Choose your preset - play!
To adapt your completely digital 4-channel amplifier to your reinforcement, you have to
choose and load the correct preset. For chosen applications the DA 428 includes some
pre-set presets. If you would choose these presets, please take care of the internal
routing of the signal inputs and speaker outputs of the DA 428 (provided that the input
signal is analogue).
The DA 428 includes 12 factory presets in the internal memory which can be free
programmed and saved on the actually preset. You can change and save the name of
the preset, too. You can save and load factory presets also on SD-card. How it can be
made and which changes in the detailed submenu are possible, you will find it on page
8 - 10 in this manual.
6.2 Selecting presets
On the following example you choose „preset 3“, please follow the instructions!
Pr 1 Preset 1
Output headroom info
2x
Bass
Bass
Top L
Top R
For menu access
→
touch knob or panel
Pr 3 Preset 3
Output headroom info
Bass
Bass
Top L
Top R
For menu access
→
touch knob or panel
After power on the DA 428 for the very first time the left graphic appears on the LCD display. Now
„preset 1“ is loaded. For example to choose and load „preset 3“ you have to press the marked
arrow key twice and confirm with the OK-button. If you control your PA system with an analogue
audio signal,
you can start now!
