Nilfisk-ALTO AMX-140FX Mono MIC/LINE Channels, Input Level Setting, Mono Channel Insert

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4.1 MONO MIC/LINE Channels

1

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

48 Volt phantom power

2

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.

4.2 INPUT LEVEL Setting

3

This control is provided with 2 different indication rings: One is for the microphone and the other for the line levels. When you use a microphone you shall read the OUTSIDE 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.

MIC 1

J.T.

21

3

BAL OR

UNBAL

LINE IN 1

INSERT

TRIM

+15dB -30dB LINE 0dB 44dB MIC

LOW CUT

75Hz

18dB/Oct

1

4

3

5

4.3 MONO Channel INSERT

4

Insert points are provided for each mono MIC channel, which can allow you patch external signal processing devices into signal path. When you insert a TRS jack in the insert socket, the signal will be taken out after the input gain control (Trim), sent to an ex- ternal processor such as a compressor-limiter, and returned into the channel strip immediately before the EQ section. Of course, the jacks used must be stereo (Tip Send/Ring Return).

ON

 

OFF

 

POWER

PHANTOM

 

2

4.4 LOW CUT Switch

5

By pressing this button you will activate a 75 Hz low frequency filter with a slope of 18 dB per octave. You can use this facility to reduce the hum noise infected by the mains power supply, or the stage rumble while using a microphone.

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Contents AMX-140FX/ AMX-140 Power Supply Safety Related SymbolsImportant Safety Instructions External ConnectionPreface Table of Contents Introduction Features Ready to START? Control Elements AMX-140FXAMX-140 Mono MIC/LINE Channels Input Level SettingLOW CUT Switch Mono Channel Insert1 HI Stereo Inputs3 Bands Equalizer Controls 2 MIDPhantom LED Power LEDPeak LED 2TK to Ctrl RoomPhones Tape DFX FootswitchTape OUT Phantom ON/OFF Switch Main MIX Output ConnectorsPower ON/OFF Switch AC Input ConnectorInstallation and Connection Some Final Tips on Wiring Configuration Stereo TRS Jack PlugTapped Connection Direct Output Lead For the Experts WHO Want to Know More Modification on mono and stereo channelsVOCAL2 VOCAL1Large Hall Small Hall Large RoomPlate Small RoomTape Reverb Mono Delay Spring ReverbFlanger Stereo DelayChorus REVERB+DELAY REVERB+FLANGERREVERB+CHORUS System Block Diagrams TrackTechnical Specification Power supply AC/AC Adaptor PhysicalReturn Notice WarrantyWarranty Registration Card Terms and ConditionsSeikaku Technical Group Limited

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