User manual BEHRINGER GI100

[. . . ] A passive DI box contains much simpler circuitry and requires no batteries, making it is less expensive. On the other hand, its performance is dependent on the impedance of the connected gear. A change in impedance on the output side will cause the input impedance to change. Among other things, the impedance ratings greatly effect the frequency response. [. . . ] The DIRECT LINK TO CABINET is a direct output of the input signal, allowing you for example to simultaneously run your instrument through the GI100 and complete your normal signal path by connecting the DIRECT LINK to an amp or speaker cabinet. The INPUT and DIRECT LINK sockets are directly connected. When connecting the speaker output of a tube amp to the input of the GI100, please be sure to connect a guitar speaker or other appropriate impedance load to the DIRECT LINK socket in order to avoid possible damage to your amplifier. 7 + 8 + 1. CONNECTION EXAMPLES The following section illustrates various applications of the ULTRA-G GI100. 2. 1 Conversion of guitar signals Fig. Guitar ß Tube amplifier ß GI100 ß Loudspeaker/Console This diagram illustrates two common applications in which unbalanced guitar signals are converted into balanced signals. In the first example the guitar is connected directly to the GI100, which in turn feeds the console. In this case, the PAD switches should be deactivated with the VIRTUAL CAB switched on or off depending on the sound desired. 6 2. CONNECTION EXAMPLES ULTRA-G GI100 The second example shows the GI100 being driven by the loudspeaker output of a guitar amp. If youre using a tube amp, its very important to connect an impedance loadpreferably a speakerto the DIRECT LINK TO CABINET output in order to prevent damage to your amp. For this application, start with one PAD switch depressed and the GND LIFT switch activated. We also recommend using the VIRTUAL CAB speaker simulation for an authentic guitar sound. 2. 2 Picking up a bass guitar or keyboard signal Fig. Bass guitar ß GI100 ß Amplifier/Console 2. Keyboard ß GI100 ß Amplifier/Console 2. CONNECTION EXAMPLES 7 ULTRA-G GI100 This diagram illustrates two standard DI applications. The signal going to the amp via the DIRECT LINK is unaffected; it is simply picked up and additionally fed, as a balanced, low-impedance signal, to the mic inputs of the mixing console. This is particularly advantageous with bass guitars, since microphones that reproduce high-energy bass frequencies in a halfway linear manner are rareand expensive. When using effects or other outboard processors, these should be connected in front of the ULTRA-G in the signal path, so that its output includes these signals. Here, a quality DI box such as the GI100 is indispensable to ensure clean signals, especially when using long cables. 2. 3 Converting a microphone signal from high-impedance unbalanced to low-impedance balanced Many inexpensive microphones have unbalanced high-impedance outputs. With the ULTRA-G, these microphones can be used in spite of long cable runs without the danger of hum or other interference. [. . . ] The warranty terms mentioned herein are applicable unless they constitute an infringement of national warranty law. 4. WARRANTY 11 ULTRA-G GI100 The information contained in this manual is copyright protected. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording of any kind, for any purpose, without the express written permission of BEHRINGER Spezielle Studiotechnik GmbH. BEHRINGER, ULTRA-G and ULTRA-DI are registered trademarks. [. . . ]