Behringer Stereo Amplifier MIC100 User Manual

User’s Manual  
Version 1.1  
September 2003  
 
TUBE ULTRAGAIN MIC100  
Welcome to the BEHRINGER family!  
Thank you for the confidence you have placed in us by purchasing  
the MIC100.  
Your MIC100 is a professional mic preamp that can be used in a  
variety of applications. Due to its incredible functionality and the  
broad range of connection options, the MIC100 ensures outstanding  
performance. You will soon appreciate the MIC100’s flexibility, be it  
live on stage or in the home/professional recording studio.  
1. INTRODUCTION  
With the MIC100, you have purchased an extremely musical mic  
preamp that is equipped with a 12AX7 vacuum tube. An integrated  
limiter, a phase reverse function, phantom power supply, a highly  
accurate LED meter and a switchable pad function complement this  
powerful device.  
1.1 The design concept  
The heart of the TUBE ULTRAGAIN is an extremely low-noise  
microphone preamp circuitry that uses discrete components and  
produces a highly trans-parent sound. In combination with our  
BEHRINGER tube technology, the operational amplifiers 4580 and a  
sophisticated circuit topology, the TUBE ULTRAGAIN yields excellent  
noise and distortion properties. The innovative UTC circuitry that has  
been developed by our engineering team offers an abundance of  
sound-shaping possibilities. Absolute musicality was our major goal  
when we designed the TUBE ULTRAGAIN. The result is a device that,  
thanks to our tube circuitry, lends an incredible punch to percussion  
instruments. On the other hand, instruments that are rich in upper  
harmonics will receive more transparency. The sound will be warm,  
detailed and brilliant.  
Surely you know the recording problem that single instruments or  
vocals sometimes don’t cut through. Thanks to the TUBE ULTRAGAIN,  
vocals gain in presence and volume without masking other instruments.  
As a result, your voice will be perfectly integrated in the mix.  
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1. INTRODUCTION  
 
TUBE ULTRAGAIN MIC100  
2. CONTROL ELEMENTS  
Fig. 2.1: Side panel of the MIC100  
2.1 Connections (side panel)  
Use the POWER SUPPLY CONNECTOR to hook up the enclosed  
power supply unit. Next to this connector you’ll find the strain  
relief clamp, which prevents accidental release of the power  
supply.  
This is the balanced XLR OUTPUT of your MIC100. Use this  
connector to feed the XLR input of your mixing console,  
multitrack recorder or power amp.  
The balanced 1/4" TRS OUTPUT of your MIC100 can also be  
connected to either mixer, recording system or power amp.  
+
Please note that you can use the XLR and TRS outputs of  
your MIC100 at the same time! Thus, it is possible to  
connect the MIC100’s output signal to two different devices  
simultaneously.  
The balanced 1/4" TRS INPUT of your MIC100 can be used to  
connect your electric guitar, for example. This input is wired  
parallelly to the XLR input.  
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2. CONTROL ELEMENTS  
 
TUBE ULTRAGAIN MIC100  
Use the balanced XLR INPUT to connect your microphone.  
+
In contrast to its outputs, the MIC100’s inputs should  
never be used simultaneously!  
2.2 User interface  
Fig. 2.2: User interface of the MIC100  
The GAIN control allows applying gain from +26 to +60 dB to the  
input signal. This control should be set fully counterclockwise  
when (dis)connecting a sound source to the MIC100. When all  
connections are made, slowly start raising gain.  
We recommend using the LED meter to adjust gain. The  
LED chain displays the output signal level in dB. Please make  
sure that the clip LED never lights up permanently. It should  
light up only at peak signals, but never all the time.  
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2. CONTROL ELEMENTS  
 
TUBE ULTRAGAIN MIC100  
If your MIC100 is connected to the mains via the enclosed  
power supply unit, the POWER LED lights up to indicate that  
your MIC100 is running.  
The 20 dB PAD button reduces the input sensitivity by 20 dB.  
The appropriate setting depends on the equipment connected.  
No matter what your application is, the clip LED warns you to  
reduce the gain setting, so as to avoid distortion.  
This +48 V switch activates the phantom power supply for the  
XLR input. Phantom power supply is required for operating  
condenser microphones.  
With the PHASE REVERSE switch, the input signal is reversed  
by 180°. This function is available for both mic and line signals.  
Use this function in a multi-microphone setup if you detect  
phase cancellations in specific frequency bands.  
Use the LIMITER switch to limit the signal and to prevent  
distortion.  
The OUTPUT control governs the output level of the device  
within a range from -oo to +10 dB. If the control is set fully  
counter-clockwise, there is no output signal at all. The more the  
control is set clockwise, the higher the output level.  
2.3 Serial number  
The MIC100’s serial number is located on the bottom cover. Please  
take time to fill in and return the warranty card within 14 days after the  
date of purchase, so as to benefit from our extended warranty. Or  
use our online registration option available on the World Wide Web at  
3. WIRING EXAMPLES  
You’ll be surprised how flexibly you can set up your MIC100. The  
following chapter describes some typical wiring examples.  
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3. WIRING EXAMPLES  
 
TUBE ULTRAGAIN MIC100  
3.1 Enhancing vocals and instruments in live applications  
Here, the MIC100 is wired before the mixer’s channel input. Thus,  
the sound gains in warmth and transparency. Due to the integrated  
limiter, distortion is eliminated effectively.  
Fig. 3.1: Standard live application  
3.2 “Direct to disk” application in studio or home recording  
environments  
If you are looking for a device that considerably enhances the sound  
of your digital workstation, this is where the MIC100 comes in. Many  
hard disk recorders lack a certain “liveliness”. In addition, they are  
often equipped with “lousy” microphone preamps. Such problems can  
be solved perfectly with the MIC100.  
Fig. 3.2: Connection of the MIC100 and the soundcard of your PC  
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3. WIRING EXAMPLES  
 
TUBE ULTRAGAIN MIC100  
3.3 The MIC100 as DI-box  
Your MIC100 is excellently suited for this application. For example,  
you can connect an unbalanced acoustic guitar signal to the MIC100  
to prevent hum or interference noise. What you get is a balanced,  
noise-free signal.  
Fig. 3.3: The MIC100 as DI-box  
4. AUDIO CONNECTIONS  
Fig. 4.1: XLR connectors  
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4. AUDIO CONNECTIONS  
 
TUBE ULTRAGAIN MIC100  
Fig. 4.2: 1/4" TS connector  
Fig. 4.3: 1/4" TRS connector  
5. WARRANTY  
For our current warranty terms, please refer to our website at http:/  
a
[email protected], fax at +49 2154 9206 4199, or call  
+49 2154 9206 4166.  
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5. WARRANTY  
 
TUBE ULTRAGAIN MIC100  
6. SPECIFICATIONS  
XLR input  
Connector  
Balanced/unbalanced  
Type  
Impedance  
Max. input level  
Transformerless, DC-decoupled input  
approx. 2kΩ  
+7 dBu / 20 dB with pad  
1/4" TRS input  
Connector  
Type  
Impedance  
Max. input level  
Balanced/unbalanced  
Transformerless, DC-decoupled input  
approx. 1 MΩ  
+16 dBu / 20 dB with pad  
Audio outputs  
Connectors  
Type  
Impedance  
Max. output level  
XLR and 1/4" TRS connector balanced/unbalanced  
Transformerless, DC-decoupled output  
approx. 700 balanced / approx. 350unbalanced  
approx. +26 dBu @ 100 kΩ  
System specifications  
Frequency response  
Mic input <10 Hz - 43 kHz (+/-3 dB)  
Line input <10 Hz - 40 kHz (+/-3 dB)  
Function controls  
Gain  
Output  
variable (+26 to +60 dB)  
variable (-ooto +10 dB)  
Function switches  
20dBpad  
+48 V  
Phase reverse  
Limiter  
Level attenuation (20 dB)  
Activates the phantom power  
Phase reverse (180°)  
Limits the output signal  
Indicators  
Input level  
8-segment LED meter: -24, -18, -12, -6, 0, +6, +12,  
clip  
Power-LED  
Indicates operation  
Power supply  
Mains voltages  
USA/Canada  
U.K./Australia  
Europe  
120 V~, 60 Hz, PSU  
240 V~, 50 Hz, PSU  
230 V~, 50 Hz, PSU  
100 V~, 50 - 60 Hz, PSU  
Japan  
Physical  
Dimensions (H x W x D)  
approx. 2 1/2" (64 mm) x 5 1/4" (135 mm) x  
5 1/4" (135 mm)  
Weight (without power supply)  
approx. 0.5 kg (1.1 lbs)  
BEHRINGER is constantly striving to maintain the highest professional standards. As a  
result of these efforts, modifications may be made from time to time to existing products  
without prior notice. Specifications and appearance may differ from those listed or illustrated.  
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6. SPECIFICATIONS  
 
TUBE ULTRAGAIN MIC100  
The information contained in this manual is subject to change without notice. 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 is a registered trademark. ALL RIGHTS RESERVED.  
© 2003 BEHRINGER Spezielle Studiotechnik GmbH.  
BEHRINGER Spezielle Studiotechnik GmbH, Hanns-Martin-Schleyer-Str. 36-38,  
47877 Willich-Münchheide II, Germany  
Tel. +49 2154 9206 0, Fax +49 2154 9206 4903  
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