Originally Posted by Serge
Originally Posted by Carl
and Discrete adding nothing as the [music] input signal is already at 0db; relative to the other channels.
Except that with a movie track the LFE level is always (analogue and digital domain) set to -10db relative to the other channels. And all pre-amplifiers will add automatically 10db to the LFE level in the digital domain.
I have added [music] in the above for clarity.

Which is why one should use the Cinema preset for movies (as it adds 10db to the LFE to bring the recorded level up to 0db relative) and not Discrete as it is for multi-channel music (DVD-A) where the LFE channel is recorded at 0db relative.

What you are measuring is a 10db difference on LFE between the Cinema and Discrete presets; this is correct.

What you need to do is get a calibrated test disc (using Avatar or any movie sound track cannot give quantifiable results) and measure the LFE against the other channels.


Regards,
Carl




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