8ULTRA-DI PRO DI800 User Manual

3.Applications

3.1 Connecting a guitar/bass signal

 

Microphone Input

DI600

Out

 

In

Link Out

Fig. 3.1: GuitarDI-boxguitar amp/mixer

This illustration shows the standard application of a DI-box. The signal feeding the amplifier remains unchanged; it is simply taken and routed into the amp. The low-impedance balanced signal is forwarded to the mic input of the mixing console. This application has its advantages particularly with bass guitars, because very few microphones can linearly transmit bass frequencies with high signal levels. If you are using effects, insert the DI800 after the effects device, so that you can monitor the effects via the PA system or the recording as well.

3.2Converting output signals of a keyboard, DJ mixer, etc.

L

R

In In

Out Out

Turn pan pots fully (counter) clockwise

on microphone channels

Fig. 3.2: DJ mixerDI-boxmixer

This configuration lends itself to use with a keyboard, DJ mixer or other mono/stereo signal sources with line level, particularly when using long cables (e.g. connecting to a FOH mixer). The signal can be looped through to another amplifier via the link output. Thus, you get a monitor signal that is independent from the actual FOH signal (useful for keyboarders, DJs etc.).

3.3 Converting a microphone signal

Average-quality microphones often feature unbalanced, high-impedance outputs. The DI800 lets you wire such mics to the mixing console using long cables without running the danger of inducing hum or interference noise. To this end, the microphone has to be connected to the input of the DI-box, and the DI-box’s output needs to be connected to the mic input on the mixing console.

In

Out

Fig. 3.3: Microphone connection

3.4 Taking a signal from a speaker output

Sometimes, you want to take a signal directly from a speaker output, even though just one speaker output is available. By using the -30 dB switch on the DI800, you can connect your mixing console to an amp output (up to 3,000 Watts into 4 Ohms), without worrying that the DI800 will be damaged due to overload! If you are using a tube amp, you should connect a speaker or a similar load resistance to the LINK output.

-30 dB! In

Out

+ (red / positive)

- (black / negative)

Fig. 3.4: Connection to a power amp output