PulseEffects

 

sudo apt install pulseeffects

Get in there and enable "Auto Gain".

This will make movie dialogue the same as the loud bits!

It'll do any music that's playing too - it becomes the default audio sink.

I "Reverb" and "Excite", "Pitch" even.

Peter Maiden

Lovely.

You may want to EQ out the <50Hz to not annoy flatmates with random hums from your gameshows - though your speakers might be creating these frequencies on their own, especially if they're the plastic hi-fi sort.