Meridian Audio Digital Surround Controller G61 ユーザーズマニュアル

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 Setting  up   sources
This section explains how to use the  Sine/Sub/Sens controls to 
adjust the sensitivity of the analogue sources.
 To adjust the  sensitivity of a source
To obtain the best signal-to-noise ratio for each analogue source 
you can adjust its sensitivity to give the highest level that does not 
produce clipping.
• Select the source you want to adjust, with loud source material 
playing.
• Display  the  Sine/Sub/Sens controls as described above.
• Press  Sens- or Sens+ to decrease or increase the sensitivity.
The display shows the current sensitivity and the peak level; for 
example:
Sine -Xover+
-Sens.+
TV    1.4V  Peak -3
You can adjust the sensitivity between 0.7, 1.0, 1.4, 2.0, and 2.8V 
(least sensitive).
If the sensitivity is set too high the input will clip the loudest 
passages, and the peak will be 0dB.
The display shows, for example:
Sine -Xover+
-Sens.+
TV    2.0V  Clip -0
In this case reduce the sensitivity by selecting a higher number.
If you have selected a digital source you cannot adjust the 
sensitivity and the display shows, for example:
Sine -Xover+
-Sens.+
DVD   Not Analogue