channel path (see section 9) the insert is after that sec-

 

tion, allowing equalisation of both the insert send and

 

return. The signal from the channel appears on the TIP

 

of the plug and is returned on the RING. The insert

 

point allows limiters, compressors and other signal

 

processing units to be added as required to particular

 

input channels.

 

 

 

 

 

 

4.

LINE INPUT

 

 

 

The LINE Input is a 14" 3 pole ‘A’gauge jack socket, to

 

accept balanced or unbalanced line level sources when

 

the LINE switch(5) is pressed. Unlike the low imped-

 

ance Microphone input, this stage presents a high

 

impedance(>10kΩ) to the input signal, enabling many

 

types of instruments to be plugged straight in without

 

D.I. boxes or external preamplifiers.

 

 

Line inputs will be useful as extra Effects Returns,

 

where additional post-effect equalisation is required.

 

 

 

 

5.

LINE SELECT

 

 

 

The LINE switch selects Line input when pressed, and

 

Microphone input when released. When Line is se-

 

lected the Gain range is reduced by 20dB(see 6 below).

 

 

 

 

6.

GAIN CONTROL

 

 

 

When the Microphone input is selected this control acts

 

as a SENSITIVITY control covering a 50dB range. Chan-

 

nel signal level increases as the control is turned

 

clockwise. When the Line input is selected it serves as

 

a GAIN control, with the scaling reduced by -20dB from

 

the printed scale. There is a line-up mark at the Line in-

 

put unity gain point.

Some audio

equipment,

 

particularly that intended for domestic use, operates at

 

a nominal -10dBV level and an increased Gain setting

 

will be required.

 

 

 

 

7.

CHANNEL/MONITOR INPUT REVERSE

 

Normally the input to the

Channel is

the Mic/Line

source, while the input to the Monitor path is the tape return. The CHANMNTR INPUT REV switch swaps over these inputs, allowing the tape return signal to be brought down the full facilities of the Channel path dur-

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SoundCraft Audio Mixing Console Model Spirit Studio Line Input, Line Select, Gain Control, CHANNEL/MONITOR Input Reverse