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LTO AMX-180MKII/180 FX MKII mixing console is a professional compact mixer. You will get the smooth 

accurate more natural and open sound form this apparatus, and it is really ideal for gigs, recording and fixed PA 

installations. The AMX-180 MKII/180 FX MKII mixing console is packed with some key features that can not be 

found in other consoles of its size: 4 mono (these are provided with ultra low noise microphone preamplifiers and 

phantom power at +48 Volt) and 4 stereo input channels, and each of them is provided with a 3-band equalizer for 

HI, MID and LOW controls; highly accurate 12-segment bar graph meters and 2-track inputs assignable to main 

mix, control room/phone outputs etc. Besides, the 24-bit effect processor with 256 effects (16 presets *16 

variations) is equipped specifically for AMX-180 FX MKII mixing console. 

 

The features as followings: 

5 MIC input channels with gold plated XLR and balanced LINE inputs 

4 stereo input channels with balanced TRS jacks 

Ultra-low noise discrete MIC pre-amps with +48V Phantom power 

Extremely high headroom offering more dynamic range 

Insert on each of mono input channels 

Switch-able Low-cut filter on each mono channel 

+4dBu/-10dBV on each channel 

Warm, natural 3-band EQ on each channel 

Peak LED on each channel 

Mute/ALT 3-4, SOLO function on each channel 

4 AUX returns for additional functionality 

Control room and headphone outputs 

2-Track inputs assignable to main mix, control room / headphone outputs 

Highly accurate 12-segment bar graph meters 

 

Additionally, the AMX-180FX

 MKII

 is also equipped with following features: 

24 bit digital effect processor 

256 effects (16 presets *16 variations) 

Effect on/off by means of MUTE switch or a footswitch connected to the DFX FOOTSWITCH 

1. Introduction

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Summary of Contents for 180FX MKII

Page 1: ...Service Manual www altoproaudio com Version 2 0 MODEL AMX 180MKII 180FX MKII Revised on Dec 2009...

Page 2: ...CONTENTS 1 Introduction 1 2 Specification 2 3 Block Diagram 3 4 Schematic Diagram 4 5 PCB Layout 12 6 Wiring Diagram 18 7 Exploded Views Mechanical Parts List 19 8 BOM List 22...

Page 3: ...ipped specifically for AMX 180 FX MKII mixing console The features as followings 5 MIC input channels with gold plated XLR and balanced LINE inputs 4 stereo input channels with balanced TRS jacks Ultr...

Page 4: ...1 Kohm All other output 120 ohm Hi shelving 15dB 12KHz Mid bell 12dB 2 5KHz Low shelving 15dB 80Hz Fader 0dB channels muted 100dBr ref 4dBu Fader 0dB all input channels assigned and set to UNITY gain...

Page 5: ...CONTROL ROOM LEFT TAPE OUT 2 1 3 2 1 3 LEVEL AUX2 DSP STEREO AUX RETURN 1 3c 5e 1a 4d 2b LEFT MONO 3c 5e 1a 4d 2b RIGHT AUX1 RETURN T R S RN TN T R S RN TN T R S RN TN T R S RN TN PAN PHANTOM LINE IN...

Page 6: ...T4 3c 5e 1a 4d 2b X30 JY 6351G 02 250 T R S RN TN MAIN R UNBAL 3c 5e 1a 4d 2b X33 JY 6351G 02 250 T R S RN TN MAIN L UNBAL R186 120R R184 120R R190 120R R185 120R 3c 5e 1a 4d 2b X29 JY 6351G 02 250 T...

Page 7: ...7 LEFT MONO RIGHT LINE IN 8 R158 2K SW6A PS 22E85L R162 2K SW6B PS 22E85L LEVEL 4dBu 10dBv LEVEL 4dBu 10dBv PRE CH7 PRE CH8 VR5 Z10K C2 470P C21 22u 35V R32 11K0 LINE IN1 MIC 1 C31 47uF 50V R41 3K60...

Page 8: ...14 YEL SOLO R129 2K2 VCC LOGIC 2 0V or 0 5V SW14 MUTE ALT3 4 SW15 SOLO PFL EQ HI 12KHZ C70 18n M VR36A B50K R64 6K8 VR38A B50K R63 6K8 LO R90 10K C19 47u 25V 3 2 1 U7A 4580M R182 1M C146 22P R6 1K1 VR...

Page 9: ...BUS R306 18K RIGHT BUS R305 18K ALT3 4 TO MIX SW28A PS 22E85L SW28B PS 22E85L 8 4 U15C 4580M 8 4 U18C 4580M 8 4 U14C 4580M 8 4 U17C 4580M 8 4 U20C 4580M 8 4 U21C 4580M 8 4 U13C 4580M 8 4 U16C 4580M 8...

Page 10: ...0 7 4 2 0 2 5 6 7 U27B LM358 R399 36K R393 0R0 R395 100K C297 47u 25V PGND 10 11 13 U35D LM339 5 4 2 U35A LM339 5 4 2 U34A LM339 10 11 13 U34D LM339 LD45 GR LD44 GR LD43 YEL LD42 RED 8 9 14 U35C LM339...

Page 11: ...31_2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CN11 HEADER 8X2 1 2 3 4 COM EN2 SDB161PVB15FS 1 2 3 4 COM EN1 SDB161PVB15FS 1 2 3 4 5 6 7 8 AR1 680R 4 1 2 3 4 5 6 7 8 AR2 680R 4 DGND DGND 5VD DGND 5VD 1 2...

Page 12: ...R16 BR DGND DGND R426 220R R419 7K5 8 4 U44C 4580M 8 4 U46C 4580M 8 4 U45C 4580M C336 100N C337 100N C338 100N C339 100N VCC VCC 3 4 U49B 74HC14 5 6 U49C 74HC14 8 9 U49D 74HC14 12 13 U49F 74HC14 14 7...

Page 13: ...11 For AMX 180FX MKII only...

Page 14: ...PCB 313123 2 Top Overlay 5 PCB Layout 12...

Page 15: ...AMX 180MKII 180FX MKII PU1 Top Overlay AMX 180MKII 180FX MKII PU1 Top Layer 13...

Page 16: ...AMX 180MKII 180FX MKII PU1 Bottom Overlay AMX 180MKII 180FX MKII PU1 Bottom Layer 14...

Page 17: ...AMX 180MKII 180FX MKII MN1 Bottom Layer 15...

Page 18: ...AMX 180MKII 180FX MKII MN1 Top Layer 16...

Page 19: ...DSP for AMX 180 FX MKII only 17...

Page 20: ...2 3 0 V T G 0 0 1 1 7 Voltage transform CN1 CN2 CN3 AMX180PU1 AMX180MN1 AMX 180MKII 180FX MKII Wiring Diagram CN17 AMX 180MKII180FXMKII WIRING DIAGRAM Sch Titel Size File Date Drawn By Sheet Revision...

Page 21: ...MODEL No AMX 180MKII 7 Exploded Views Mechanical Parts List 19...

Page 22: ...MODEL No AMX 180FX MKII 20...

Page 23: ...ication Qty 1 MA04586 panel AMX 180FX ALTO_V1 1 1 2 MB03115 rear board AMX 180 1 3 HI00026 power switch RA12KKATOF 2P 1 4 HI00171 power switch R612KKAT0F1 1 5 MG00061 screw M3 10 18 6 ME00060 nut JY 6...

Page 24: ...el 34 0033 MG00061 screw RS M3 10 MIC jack RCA outlet handles 35 0034 MF00061 MIC jack 9 6 13 0 5t 36 0035 ME00060 MIC jack JY 6351G 02 250 37 0036 MA06828 panel RS AMX 180 MK ALTO_V1 0 38 0037 MB0311...

Page 25: ...R109 R110 R111 R112 R113 R114 R115 R116 R11 7 R118 R119 R120 R121 R122 R123 R124 R125 R126 R127 R208 R210 R211 89 0016 RD00104 SMD fixed resistor 1 10W 18K 5 0603 R79 R89 R90 R91 90 0017 RD00306 SMD...

Page 26: ...9 SMD fixed resistor 1 10W 120 5 0603 R391 136 0010 RD00076 SMD fixed resistor 1 10W 330 5 0603 R404 R405 137 0011 RD00078 SMD fixed resistor 1 10W 470 5 0603 R401 R402 R403 138 0012 RD00347 SMD fixed...

Page 27: ...10W 24 9K 1 0603 R271 R272 180 0054 RD00098 SMD fixed resistor 1 10W 7 5K 5 0603 R406 R408 181 0055 AE00553 SenJu solder paste M705 GRN360 K2 V 0 5KG bottle 182 0056 CI00266 SMD ceramic capacitor RS...

Page 28: ...FX USB ALTO_V1 2 28 0027 MI02093 fixed bracket AMX 180 1 0t 25 76 5 410 right_V1 0 29 0028 MI02095 fixed bracket AMX 180 right_V1 0 30 0029 NA00279 clip chain bag 0 04t 100 150mm_V1 0 31 0030 NA00874...

Page 29: ...2 6P KFC D85 C SELF LOCK SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 85 0006 HI00237 push button switch RS 2 12P KFC D130 B SELF LOCK SW9 86 0007 HC00065 connector male 2P 2 5mm 90 SW10 SW11 87 0008 SD00074 inte...

Page 30: ...5 C7 C9 C46 C47 C48 C49 C50 C51 C52 C53 C 54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C7 3 C74 C75 C76 C77 C78 C79 C80 C81 C119 C120 133 0025 HK04392 PC board P AMX180F...

Page 31: ...D46 LD47 L D48 LD49 LD50 LD51 LD52 LD53 190 0008 SA00053 L E D 3 round red long foot 26mm LD1 LD3 LD4 LD6 LD7 LD9 LD10 LD12 LD13 LD15 LD16 LD18 LD19 LD21 LD22 LD24 LD2 6 LD28 LD30 LD42 LD401 191 0009...

Page 32: ...03 R104 R107 R110 R113 R116 R283 R284 R285 R286 R287 R288 R28 9 R290 R291 R294 R298 R300 R303 R304 R 362 R363 R364 R365 R397 R398 R426 R427 R452 R453 R454 R455 232 0032 RD00102 SMD fixed resistor 1 10...

Page 33: ...C261 C262 C263 265 0006 CB00194 electrolytic capacitor 47uF 25V 5 11mm C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C2 2 C23 C24 C25 C26 C27 C28 C29 C30 C31 C 32 C33 C34...

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