Alto AMX-120 User Manual
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Alto AMX-120 User Manual

12-channel mixing console
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User's Manual
AMX-120
12-CHANNEL MIXING CONSOLE
R
LTO
www.altoproaudio.com
Version 1.4 Septemper 2005
English

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Summary of Contents for Alto AMX-120

  • Page 1 User's Manual AMX-120 12-CHANNEL MIXING CONSOLE www.altoproaudio.com Version 1.4 Septemper 2005 English...

  • Page 2: Safety Related Symbols

    SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol, wherever used, alerts you to the pre- sence of un-insulated and dangerous voltages with- in the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death.
  • Page 3 LTO AMX-120 mixing console is equipped with 2 mono input channels (these are provided with ultra low noise microphone pre-amplifiers and phantom power at +48 Volt), 8 stereo input channels and 2 TK IN. So, in total you have 12 input channels on your AMX-120.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS 1.INTRODUCTION...4 2.FEATURES...5 3.READY TO START?...6 4.CONTROL ELEMENTS...7 MONO MIC/LINE Channels...8 STEREO Inputs ...9 MASTER Section ...10 CTRL ROOM OUTPUT Connectors ...11 2TK IN/OUT Connectors ...11 AUX SENDS Connectors ...11 PHONES ...11 MAIN MIX OUTPUT Connectors ...11 REAR PANEL Description ...12 5.INSTALLATION AND CONNECTION...13 6.FOR THE EXPERTS WHO WANT TO KNOW MORE...15 7.BLOCK DIAGRAMS...16...

  • Page 5: Introduction

    4-segment bar graph meters and 2-Track inputs assign-able to main mix, control room / headphone outputs etc.. Your AMX-120 is very easy to operate but we advise you to go through each section of this manual carefully. In this way you will get the best out of your AMX-120.

  • Page 6: Features

    2. FEATURES The AMX-120 12-Channel Mixing Console is designed for professional application. It will provide the following features: 2 MIC input channels with gold plated XLRs and balanced LINE input 8 stereo input channels with balanced TRS jacks Ultra-low noise discrete MIC pre-amps with +48V phantom power...

  • Page 7: Ready To Start

    3.3 Before turning on the AMX-120 you shall connect it to a power amplifier and turn-on the mixer BEFORE the power amplifier. Once you have finished your working session you shall turn the mixer off AFTER the power amplifier.

  • Page 8: Control Elements

    4. CONTROL ELEMENTS MIC 1 MIC 2 J.T. J.T. J.T. J.T. BAL OR BAL OR UNBAL UNBAL LINE IN 1 TRIM TRIM +15dB -30dB LINE +15dB -30dB LINE 44dB MIC 44dB MIC 12kHz 2.5kHz 80Hz LOW CUT POST (PRE) LEFT RIGHT LEFT RIGHT...

  • Page 9: Mono Mic/Line Channels

    4.1 MONO MIC/LINE Channels These are channel 1 through channel 2. You can connect balanced, low impe- dance microphones to the XLR socket. On the 1/4" jack you can connect either a microphone or a line level instrument. You shall never connect an unbalanced microphone to the XLR socket if you do not want to damage both the micro- phone and the mixer.

  • Page 10: Aux Send Control

    -. PEAK LED Inside your AMX-120 the audio signal is monitored in several different stages and then sent to the PEAK LED. When this LED blinks, it warns you that you are reaching signal saturation and possible distortion. The PEAK LED will blink with a level that is 6dB before actual clipping.

  • Page 11: Master Section

    -. +4dBu/-10dBV Switch Your AMX-120 provides the gain select switch, which is used to adjust the sensitivity of line input on stereo channels. Line level are considered to be between 1V and 2V RMS (+2dBu ~ +8dBu) in professional equipment, peak levels may extend to over 10V RMS (+22dBu).

  • Page 12: Ctrl Room Output Connectors

    -. PHONES/CTRL ROOM Control This control sets the amount of signal sent to the control room and headphone. 4.4 CTRL ROOM OUTPUT Connectors These 1/4" sockets are used to send the control room signal to the studio monitor speakers or a second set of PA. 4.5 2TK IN/OUT Connectors -.

  • Page 13: Rear Panel Description

    4.9 REAR PANEL Description 18VAC~ POWER PHANTOM RATED POWER CONSUMPTION: 11W - POWER ON/OFF Switch This switch is used to turn the main power ON and OFF. - PHANTOM ON/OFF Switch This switch will apply +48 Volt Phantom Power only to the 2 XLR microphone inputs. Never connect microphones when the phantom power is on already.

  • Page 14: Installation And Connection

    5. INSTALLATION AND CONNECTION Ok, you have got to this point you are now in the position to successfully operate your AMX-120. However, we advise you to read carefully the following section to be the real master of your own mix. Not paying attention enough to the Input signal level, to the routing of the signal and the assignment of the signal will result in unwanted distortion, a corrupted signal or no sound at all.
  • Page 15 5.1 Audio Connection Both XLR and 1/4 " TRS connectors are available on the unit. In this way you can interface the unit in several different ways without experiencing any noise or signal loss. You can use the unit with single instruments using The mixer's main insert or on "in-line"...

  • Page 16: For The Experts Who Want To Know More

    6. FOR THE EXPERTS WHO WANT TO KNOW MORE As we have told you previously in this manual, the AUX SEND control both on mono and on stereo channels is factory wired as POST-FADER. If you have some skill in electronic components soldering you can modify this setting and have all your AUX SENDS configured as PRE-FADER.

  • Page 17: Block Diagrams

    7. BLOCK DIAGRAMS SEND AUX-1 RIGHT-BUS LEFT-BUS SEND AUX-1 RIGHT-BUS LEFT-BUS...

  • Page 18: Technical Specification

    8. TECHNICAL SPECIFICATION Mono input channels Microphone input Frequency response Distortion (THD & N) Gain range SNR (Signal to Noise Ratio) Line input Frequency response Distortion (THD & N) Sensitivity range Stereo input channels Line input Frequency response Distortion (THD & N) Impedances Microphone input All other inputs...

  • Page 19: Warranty

    9. WARRANTY 1. WARRANTY REGISTRATION CARD To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date. All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service.
  • Page 20 SEIKAKU TECHNICAL GROUP LIMITED No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan http://www.altoproaudio.com Tel: 886-4-22313737 email: alto@altoproaudio.com Fax: 886-4-22346757 All rights reserved to ALTO. All features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this manual without written permission is forbidden.

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