Behringer Stereo System DI4000 Manual Do Utilizador

ULTRA-DI PRO DI4000 User Manual

The BEHRINGER ULTRA-DI PRO has four identical channels. The control elements 

are identical on all channels.

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Fig. 1.1: Control and display elements on the front panel

(1) 

OUTPUT. This is the balanced output of the ULTRA-DI PRO. The connection 

to the mixing desk should be made with a standard high-quality 

balanced cable.

(2) 

+20 dB gain switch for pre-amplification of low level signals.

(3) 

Switchable HIGH CUT filters (8 kHz) for guitar applications (6 dB/Oct).

(4) 

With the PHASE REVERSE switch the input signal is reversed in phase 

by 180°.

(5) 

Use the GND LIFT switch to either connect the ground of input and output 

or keep them completely separate. Depending on the grounding of the 

connected devices linking or disconnecting will reduce hum or prevent 

ground loops. GROUND LIFT on means no interconnection. 

(6) 

The OUTPUT LEVEL meter displays the output level of the Ultra-DI PRO in a 

range from -24 dB to +18 dB.

(7) 

Use the POWER switch to turn on the BEHRINGER ULTRA-DI PRO.

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Fig. 1.2: Rear panel elements of the BEHRINGER Ultra-DI PRO

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LINK. This is the unbalanced parallel output of the ULTRA-DI PRO. 

Connect this to the input of the backline or monitor amplifier.

(9) 

INPUT. Connect the source to this 1/4" jack to input the signal.

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and  

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  The -20 dB ATTENUATION switches greatly increase the operating 

range of the ULTRA-DI PRO. From the low level signals of a high impedance 

guitar to the hot speaker terminals of a PA amplifier. Depressing both will 

give 40 dB attenuation. 

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FUSE HOLDER/VOLTAGE SELECTOR. Please make sure that the voltage 

indicated on the unit matches your local voltage, before you attempt to 

connect and operate the VINTAGER AC112. Blown fuses may only be replaced 

by fuses of the same type and rating. Some models allow for inserting the 

fuse holder in two different positions, in order to switch over from 230 V 

to 115 V operation, and vice versa. Please note that for 115 V operation 

outside Europe, you need to use a fuse of a higher rating (see chapter 3 

“Installation”). Use the enclosed power cord to connect the unit to the mains.

(12) 

To provide maximum flexibility the ULTRA-DI PRO is also fitted with an 

unbalanced XLR INPUT to connect the source.

Microphone Input

Out

DI4000

In

Link Out

Fig. 2.1: Guitar     DI box     Guitar Amp/Mixer

This figure shows the standard application of any Direct Inject box. The signal to 

the amplifier is unaffected, it is just tapped off to be routed to the microphone 

input of the mixer. Especially bass guitars benefit from this application. It is 

difficult to find a microphone which handles high level low frequencies well and 

with a linear frequency response. Using the ULTRA-DI PRO will give you clean and 

crisp sound. Connect the ULTRA-DI PRO after any effects devices, so that their 

effect will be heard over the PA system or on the recording.