How to include LFE (low-frequency effect, "bass") into the downmix of audio from 5.1 to 2.0

    Hi,

    I would like to include the LFE channel (.1) when 5.1 audio is downmixed to 2.0 by KODI. The default behaviour is that the LFE is dropped, and because of that I miss the bass effects from the movies.

    The Raspberry PI is connected to a Sony TV by HDMI, and a stereo amplifier is connected to the optical output of the TV by an optical cable. The stereo amplifier is not capable of Dolby 5.1 decoding, so the Raspberry PI + KODI has to do the job. My speakers are able to reproduce the bass of the LFE channel, but they don't get it, because the LFE is dropped during the downmix process.

    Csaba