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12-CHANNEL MIXING CONSOLE

AMX-120

User's Manual

LTO

R

www.altoproaudio.com

Version 1.4 Septemper 2005

English

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Summary of Contents for AMX-120

Page 1: ...12 CHANNEL MIXING CONSOLE AMX 120 User s Manual LTO R www altoproaudio com Version 1 4 Septemper 2005 English ...

Page 2: ...t away from naked flames Read these instructions Follow all instructions Keep these instructions Do not discard Heed all warnings Only use attachments accessories specified by the manufacturer Do not tamper with the power cord or plug These are designed for your safety Do not remove Ground connections If the plug does not fit your AC outlet seek advice from a qualified electrician Protect the powe...

Page 3: ...invite you to make suggestions which will aid us in develop ing future products for you We guarantee you our commitment for quality continual research and development and of course the best prices Thank you for choosing the LTO AMX 120 12 Channel Mixing Console which is the result of our LTO AUDIO TEAM s endeavours We would like to thank all the people who made the LTO AMX 120 12 Channel Mixing Co...

Page 4: ...OW MORE 15 7 BLOCK DIAGRAMS 16 8 TECHNICAL SPECIFICATION 17 9 WARRANTY 18 4 CONTROL ELEMENTS 7 4 1 MONO MIC LINE Channels 8 4 2 STEREO Inputs 9 4 3 MASTER Section 10 4 4 CTRL ROOM OUTPUT Connectors 11 4 5 2TK IN OUT Connectors 11 4 6 AUX SENDS Connectors 11 4 7 PHONES 11 4 8 MAIN MIX OUTPUT Connectors 11 4 9 REAR PANEL Description 12 ...

Page 5: ...key features that can not be found in other consoles of its size 2 mono input channels these are provided with ultra low noise microphone pre amplifiers and phantom power at 48 Volt each of which is provided with a 3 bands graphic equalizer for HI MID and LOW controls 8 stereo input channels highly accurate 4 segment bar graph meters and 2 Track inputs assign able to main mix control room headphon...

Page 6: ... cut filter on each mono channel 4dB 10dB gain select switch on stereo channels Warm natural 3 band EQ on each mono channel Peak LED on each mono channel AUX send switch able to PRE POST fader Control room and headphone outputs 2 Track inputs assignable to main mix control room headphone outputs Highly accurate 4 segment bar graph meters The AMX 120 12 Channel Mixing Console is designed for profes...

Page 7: ...utput controls are turned down This will avoid damages to your speakers and avoid excessive noise 3 4 Before disconnecting the AMX 120 always turn off the power switch 3 5 Do not use solvents to clean your AMX 120 A dry and clean cloth will be OK 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 ...

Page 8: ...8 3 4 9 10 5 6 15 15 15 15 0 EQ HI 12kHz 15 15 15 15 80Hz LOW 0 12 12 0 2 5kHz MID 15 15 15 15 0 EQ HI 12kHz 15 15 15 15 80Hz LOW 0 12 12 0 2 5kHz MID 0 5 20 PH PWR CLIP 15dB 30dB LINE 0dB 44dB MIC TRIM MIC 1 TRIM MIC 2 RIGHT LINE IN 3 4 LEFT MONO RIGHT LINE IN 5 6 LEFT MONO OUTPUT LEVEL LOW CUT RIGHT LINE IN 7 8 LEFT MONO RIGHT LINE IN 9 10 LEFT MONO 15dB 30dB LINE 0dB 44dB MIC 15 8 MAIN MIX LEVE...

Page 9: ...ring 0 44 dB when you use a line level instrument you shall read the INSIDE ring 15 30 dB For optimum operation you shall set this control in a way that the peak LED will blink also occasionally in order to avoid distortion on the input channel 3 BANDS EQUALIZER A 3 band equalizer is provided for mono input channels with a wide range of frequency adjustment HI This is the Treble control You can us...

Page 10: ...ol fully counterclockwise and the signal will be present only on the left speaker and vice versa 10 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 11 LEVEL Cont...

Page 11: ... AUX SENDS 8 2TK IN MAX 0 5 20 PH PWR CLIP OUTPUT LEVEL 15 8 MAIN MIX LEVEL CTRL ROOM R L 4 3 MASTER Section MAIN MIX LEVEL Dial This control sets the amount of signal sent either to the main out socket or to the tape output 15 OUTPUT LEVEL LED Display This stereo 4 segments LED meter will indicate the level of the overall output signal 16 POWER LED This LED indicates when the power is on in your ...

Page 12: ...a taper recorder or DAT You can assign the signal coming from the taper recorder either to a pair of studio monitor using the control room assignment on the front panel or you can also send the signal directly to the main mix These RCA jacks will route the main mix into a tape recorder 25 AUX SENDS LEFT RIGHT PHONES MAIN MIX OUTPUT 4 6 AUX SENDS Connector These 1 4 sockets are used to send out the...

Page 13: ...1W PHANTOM 18VAC 29 2 30 4 9 REAR PANEL Description POWER ON OFF Switch This switch is used to turn the main power ON and OFF 29 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 2 This connector is used to connect the supplied AC adapter AC INPUT Connector 30 ...

Page 14: ...nk only occasionally In Now repeat the same sequence for all input channels The main LED meter could move up into the red section this case you can adjust the overall output level through the MAIN MIX control 5 INSTALLATION AND CONNECTION At this point increase the input gain so that the PEAK LED will blink occasionally In this way you will maintain good Now connect a microphone and ask the singer...

Page 15: ... Pin3 Pin2 Pin1 Linked to Pin1 manually Pin1 Pin2 Pin3 TS Type Unbalanced Sleeve Tip TRS Type Balanced Tip Ring Sleeve TRS Type Unbalanced Tip Ring Sleeve In line Connection For these applications the unit provides 1 4 TRS and XLR connectors to easily interface with most professional for your particular connection audio devices Follow the configuration examples below Tip Ring Sleeve Tip Ring Sleev...

Page 16: ... 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 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: ...1 3 PHONES OUTPUT LEFT METER RIGHT METER MAIN MIX AUX SEND1 T R S MAIN MIX LEFT T R S MAIN MIX RIGHT T R S CONTROL ROOM OUTPUT LEFT T R S RIGHT T R S PHONES T R S PHONES CONTROL ROOM LEFT TAPE OUT LEVEL PAN PHANTOM LINE IN GAIN POWER LO MID HI 1 2 1 2 AUX1 LEVEL POST PRE BALANCE AUX1 LEVEL SG OL 3c 5e 1a 4d 2b LEFT MONO 3c 5e 1a 4d 2b RIGHT T R S RN TN T R S RN TN MIC GAIN 0 60dB LINE IN TRIM 15dB...

Page 18: ...stortion THD N 0 005 at 4dBu 1kHz Microphone input 1 4kOhm All other inputs 10kOhm or greater Tape out 1kOhm All other output 120Ohm Hi shelving 15dB 12kHz Mid bell 12dB 2 5kHz Low shelving 15dB 80Hz Low Cut filter 75Hz 18dB oct Main Mix Section Noise Bus noise Fader 0 dB channels muted 100dBr ref 4dBu Fader 0dB all input channels assigned and set to UNITY gain 90dBr ref 4dBu Max output 22dBu unba...

Page 19: ...d LTO of 1 year from the purchase date if you have completed the Warranty Registration Card in time 3 3 During the warranty service may repair or replace this product at its own option at no charge to you for LTO parts or for labor in accordance with the right side of this limited warranty 3 4 This warranty does not apply to the damages to this product that occurred as the following conditions Nor...

Page 20: ...313737 email alto altoproaudio com Fax 886 4 22346757 c 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 Copyright 2005 SEIKAKU GROUP SEIKAKU TECHNICAL GROUP LIMITED ...

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