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Contributor - Level 2

Gain knobs on X1222USB

I'm looking at the X1222USB analog mixer.  The specs say that it has 4 mic preamps which are controlled by the gain knobs on channels 1-4.  However, there are also gain knobs on channels 5-12.  In the manual it says these knobs: "+20 to -20 dB scale shows the sensitivity for the corresponding input level that is applied to the line input."   Do these channels also have preamps (but not 'mic' preamps)? 

RobertRothe Contributor - Level 2 2019-09-10

2019-09-10

Gain knobs on X1222USB

I'm looking at the X1222USB analog mixer.  The specs say that it has 4 mic preamps which are controlled by the gain knobs on channels 1-4.  However, there are also gain knobs on channels 5-12.  In the manual it says these knobs: "+20 to -20 dB scale shows the sensitivity for the corresponding input level that is applied to the line input."   Do these channels also have preamps (but not 'mic' preamps)? 

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Trusted Contributor - Level 3

Re: Gain knobs on X1222USB


@RobertRothe wrote:

   Do these channels also have preamps (but not 'mic' preamps)? 


In a sense yes, but it's just an amplification stage. A microphone pre-amp raises the mic's very small signal up to line level.