Instruction/ maintenance manual of the product AMX-120 Alto
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12- CHANNEL MIXING CONSOLE AMX -120 User's Manual LTO R www .altoproaudio.com V ersion 1.4 Septemper 2005 English.
SAFETY RELA TED 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.
2 Thank you very much L T O AUDIO TEAM PREF ACE Dear Customer: For the L T O AUDIO TEAM, music and audio are more than a profession, it is a passion and an obsession! We have, in fact, been designing professional audio products for a number of years in cooperation with many of the world's major brands.
3 T ABLE OF CONTENTS 1.INTRODUCTION...................................................................................................................................................4 2.FEA TURES........................................................
4 1. INTRODUCTION Thank you very much for expressing your confidence in L T O products by purchasing L TO AMX-120 mixing console. The AMX-120 is a professional compact mixer . Y ou will get the smooth, accurate more natural and open sound from this apparatus, and it is really ideal for small gigs, recording and fixed P A installations.
5 2. FEA TURES 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 Extremel.
6 3. READY T O ST ART? 3.1 Please check the AC voltage available in your country before connecting your AMX-120 to the AC socket. 3.2 Be sure that the main power switch is turned off before connecting the mixer to the AC socket. Also, you should make sure that all Input and output controls are turned down.
7 4. CONTROL ELEMENTS L 0 -+ 1 5 8 BAL RIGHT LEFT LEVEL 0 -+ 1 5 8 BAL RIGHT LEFT LEVEL 0 -+ 1 5 8 BAL RIGHT LEFT LEVEL 0 -+ 1 5 8 BAL RIGHT LEFT LEVEL PEAK PA N RIGHT LEFT PEAK PA N RIGHT LEFT -+ 1 5.
8 1 2 5 1 4.1 MONO MIC/LINE Channels 2 48 V olt phantom power It is available only to the XLR Mic sockets. Never plug in a microphone when phantom power is already on. Before turning phantom power on, make sure that all faders are all the way down. In this way you will protect your stage monitors and main loudspeakers.
9 LOW This is the Bass control. Boost male voice or kickdrum and bass guitar . Y our system will sound much bigger than what it is. The gain range goes from -15dB to +15dB and the center frequency is 80 Hz.
10 14 -. +4dBu/-10dBV Switch Y our 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).
11 -. PHONES/CTRL ROOM Control This control sets the amount of signal sent to the control room and headphone. 23 4.7 PHONES This socket will send out the mix signal to a pair of headphones. 27 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 P A.
12 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: SHOCK HAZARD A VIS: RISQUE DE CHOC ELECTRIQUE - DO NOT OPEN - NE PAS OUVRIR SERIAL MODEL POWER ON OFF RA TED POWER CONSUMPTION: 11W PHANTOM 18V AC~ 29 2 30 4.9 REAR P ANEL Description - POWER ON/OFF Switch This switch is used to turn the main power ON and OFF .
13 T urn down all Input and output gain controls. Connect phantom powered microphones before switching on the +48V olt phantom power switch. If you have a power amplifier connected to your AMX-120 set the level of the amplifier at no more than 75%. what Now , set the CONTROL ROOM/PHONES level at no more than 50%.
14 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.
15 6. FOR THE EXPERTS WHO W ANT T O KNOW MORE Modification on mono and stereo channels Before Disconnect the POST route AUX (PRE) POST After AUX (PRE) POST Solder the PRE route 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 -F ADER.
16 7. BLOCK DIAGRAMS 1 2 3 4 5 6 7 8 A B C D 8 7 6 5 4 3 2 1 D C B A MONO INPUT CHANNELS ( 1-2 ) 2 1 3 MIC IN +48V 3-BAND EQ 12K 2.5K 80 SG/OL LEFT-BUS RIGHT-BUS AUX-1 STEREO INPUT CHANNELS (3-10) AUX.
17 8. TECHNICAL SPECIFICA TION Mono input channels Stereo input channels Impedances Equalization Microphone input electronically balanced, discrete input configuration Frequency response 10Hz to 55kHz, + 3dB Distortion (THD & N) 0.
18 9. W ARRANTY 1. W ARRANTY REGISTRA TION CARD T o obtain Warranty Service, the buyer should first fill out and return the enclosed W arranty Registration Card within 10 days of the Purchase Date.
NF -1.4 01656 No. 1, Lane 17, Sec. 2, Han Shi West Road, T aichung 40151, T aiwan http://www .altoproaudio.com T el: 886-4-22313737 email: alto@altoproaudio.com Fax: 886-4-22346757 c All rights reserved to AL T O. All features and content might be changed without prior notice.
An important point after buying a device Alto AMX-120 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Alto AMX-120 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Alto AMX-120 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Alto AMX-120 you will learn all the available features of the product, as well as information on its operation. The information that you get Alto AMX-120 will certainly help you make a decision on the purchase.
If you already are a holder of Alto AMX-120, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Alto AMX-120.
However, one of the most important roles played by the user manual is to help in solving problems with Alto AMX-120. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Alto AMX-120 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
