That’s cause you probably are listening to a 5.1 or 7.1 audio on your 2.0 speakers. You got no center channel and that’s where the dialog happens.
This is the issue with TVs most of the time. You can either downmix 5.1 to 2.0 somehow, be lucky and have a setting on your TV that can downmix for you, or buy 5.1 sound system.
That’s cause you probably are listening to a 5.1 or 7.1 audio on your 2.0 speakers. You got no center channel and that’s where the dialog happens.
This is the issue with TVs most of the time. You can either downmix 5.1 to 2.0 somehow, be lucky and have a setting on your TV that can downmix for you, or buy 5.1 sound system.