9

ULTRA-DI DI20

3.2  Converting output signals of 

a keyboard, DJ-mixer, etc.

ULTRA-DI

DI20

Mic In

PRO MIXER

VMX200

L   

R   

In

In  

Out

Out

EURORACK UB2222FX-PRO

Fig. 3.2: DJ-mixer 

➠

 DI-box 

➠

 mixing console

This configuration is recommended when 

using a DJ-mixer or another signal source, 

which sends an unbalanced line level signal. 

In addition, if you need a separate monitor 

signal, the line level signal can be sent to 

another amplifier.

4.  Audio Connections

The BEHRINGER ULTRA-DI DI20 features 

electronically servo-balanced standard inputs 

and outputs. The circuit design is equipped 

with automatic hum suppression for balanced 

signals and operates problem-free even at 

high levels. Externally induced mains hum 

is thus efficiently suppressed. The servo 

function automatically detects unbalanced 

pin connections and changes the nominal 

level internally by 6 dB so that there is 

no difference in level between input and 

output signals.

For unbalanced use, pin 1 and pin 3 

have to be bridged

1 = ground/shield

2 = hot (+ve)

3 = cold (-ve)

input

1

2

3

output

1

2

3

Balanced use with XLR connectors

Fig. 4.1: XLR connectors