Result of the tests :
- the Cinema preset does nothing to the LFE signal level.
- the Discrete preset apply the -10db correction
I have made the comparison to the same DTS signal sent through the Oppo HDMI output to my scaler, then to the G68 optical input.
There is 1-2db missing with the Cinema preset and 10db missing with the Discrete preset

For me, Meridian has missed something with multi-analog treatment. Ok, it's an old pre-amplifier now. But it is strange that even the last version of the 861 and the new G68 are also unable to do such LFE level boost. Because it seems very easy to change.
Serge.