Behringer ULTRA-DI DI20 - Page 2

2 3ULTRA-DI DI20 ULTRA-DI DI20
2. Controls
Fig. 2.1: Controls of the DI20
(1) CH. 1 IN input is used to connect unbalanced as well as
balanced signal sources to channel 1.
(2) CH.1 OUT is the balanced output at mic level for channel 1.
(3) CH.2 IN input is used to connect unbalanced as well as
balanced signal sources to channel 2. In Link mode (see(6)) this
connector functions as output and sends the signal
directly from channel 1.
(4) CH. 2 OUT is the balanced output at mic level for channel 2.
In Link Mode (see(6)) this connector sends the signal directly
from channel 1.
(5) The ATTENUATION dampening switch considerably increases
the useful operating range of the DI20 from low signal levels of
a high-impendence microphone or a guitar, all the way to the
speaker connectors of a guitar amplier (solid state). You can
select between 20 and 40 dB worth ofattenuation.
◊ ◊ You should only use the ATTENUATION switch when your
DI20 rather than the mixing console preamp begins
distorting. Otherwise refrain from using this function to
avoid excessivedampening.
(6) The MODE switch lets you select the operating modes of
the DI20. In the 2-CH mode, two independent signals can be
connected to channels 1 and 2 respectively. In LINK mode
the DI-box functions as a splitter: One signal can be fed to
the channel 1 input and split into two balanced signals (at
outputs 1 and 2) and an unbalanced signal at CH.1 OUT. The
un-balanced signal can, forexample, be connected to an
additional amplier.
◊ ◊ When connecting a tube amplier to the input of the
DI20, pleasekeep in mind that an appropriate load
resistance (e. g. a loudspeaker) must be connected to
the CH.1 OUT (LINKMODE) connector.
(7) The BATTERY switch activates the battery powered mode. Set
the battery operating mode to OFF when your DI20 is connected
to phantom power. While setting it to OFF, brief whistling noise
may occur. This is completely normal and needs no further
attention. However, you should not change the battery switch
when you have an amp connected. For battery operation,
you’llonly need a commercial 9 V battery of the 6LR61 type.