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MonoInputChannel

1 - MIC INPUT

The mic input accepts XLR-type connectors and is designed to suit a wide range of

BALANCED or UNBALANCED signals. Professional dynamic, condenser or ribbon mics

are best because these will be LOW IMPEDANCE. You can use low-cost HIGH IMPEDANCE

mics, but the level of background noise will be higher. If you press the 48V switch down

the socket provides a suitable powering voltage for professional condenser mics (this is

also known as Phantom Power).

ONLYconnectcondensermicrophoneswiththe

48VpoweringOFF(switchUP),andONLYturnthe

48Vpoweringonoroffwithalloutputfaders

DOWN,topreventdamagetothemixeror

externaldevices.

TAKECAREwhenusingunbalancedsources,

whichmaybedamagedbythephantompower

voltageonpins2&3oftheXLRconnector.

Unplug any mics if you want to use the LINE Input. The input level is set using the GAIN

knob.

2 - 48V (Phantom Power)

Many professional condenser mics need an external powering voltage, normally 48V,

also known as PHANTOM POWER. This is a method of sending a powering voltage down

the same wires as the mic signal. Each switch supplies the 48V power to four MIC inputs.

The adjacent LED illuminates when the power is active.

DONOTUSEunbalancedmicswith48Vswitched

onastheymaybedamagedbythephantom

powervoltage.Balanceddynamicmicsandleads

cannormallybeusedwith48Vswitchedon

(contactyourmicrophonemanufacturerfor

guidance)

Micsshouldalwaysbepluggedin,andalloutput

faderssettominimumbeforeswitching48VONto

avoiddamagetoexternalequipment

3 - LINE INPUT

Accepts 3-pole `A gauge (TRS) jacks. Use this high impedance input for sources other

than mics, such as keyboards, drum machines, synths, tape machines or guitars. The

input is BALANCED for low noise and top quality from professional equipment, but you

can use UNBALANCED sources by wiring up the jacks as shown, although you should

then keep cable lengths as short as possible. Unplug anything in the MIC input if you

want to use this socket. Set the input level using the GAIN knob.

SoundCraft LX7-2 User Manual

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