Product guide

6
Installation
Remove all packing materials from the DF-12. Check that all foam and plastic padding is removed.
Screw the equipment into a 19" rack. Connect all cables.
Always disconnect from electric mains power supply before cleaning or servicing.
Damages caused by non-observance are not subject to warranty.
Set Up and Operation
Before plugging the unit in, always make sure that the power supply matches the product specification
voltage. Do not attempt to operate a 120V specification product on 240V power, or vice versa.
Install this device on a flat surface, not bending or curved.
Do not supply power before all components of the system are set up and connected properly.
The DF-12 is a fully parametric equalizer for automatic feedback reduction. The device can be operated in
2-channel mono or stereo-mode. 12 equalizer filters are available per channel. They can either be adjusted
manually or automatically via two auto-functions.
If you do not need all equalizer filters for suppressing feedback, you can use the remaining filter for
adjusting the room acoustics etc.
The DF-12 has 10 programs for saving your settings (Program 1-10).
Note: Program 0 is only for adjusting the parameter values. They cannot be saved on Program 0.
Select a program
If you have already saved a program, you can select it as follows:
Press the Filter Select-button (6). The colon (:) behind the P in the display must flash.
Adjust the desired program via the jog-wheel.
Save a program
If you want to save the adjusted parameters, press the Store-button (5), select the desired program-number
via the jog-wheel and confirm with the Store-button (5).
If an existing program is edited, „SV“ flashes in the display. This means that the modification has not been
stored yet. For storing them, press the Store-button (5) twice.
Stereo-Link
First define if you want to operate the DF-12 mono L, R or stereo LR. Use the CH L (7) and CH R (4)
buttons to select. To select or deselect LR Mode, you have to press both buttons (4+7) at the same time. In
the stereo-mode, all changes will be carried out at both channels.