Describe the listening difficulty
If the voices are hard to distinguish beneath music or effects, a dialogue control is the relevant comparison. If you continually turn the volume down for action scenes and up for conversation, reducing the loud-to-quiet difference may be more useful. These problems can occur together, but they should still be evaluated separately.
First confirm that the correct language track is selected and that the receiving speakers are appropriate to the room. Processing cannot restore a missing audio track or fix a speaker that is not receiving sound. A brief known programme gives a more reliable comparison than changing channels between settings.
Check what this setup actually offers
Apple’s current audio guide describes Enhance and Enhance More, along with Reduce Loud Sounds; available choices depend on hardware, content and output equipment. Look at the options on your actual Apple TV and playback path. An unavailable control does not automatically mean the player was installed incorrectly.
Use the relevant audio settings or playback options documented for your model. Record the starting state. Avoid assuming an instruction for the Apple TV app on another brand’s television is the same as a system setting on an Apple TV 4K box.
Compare one setting at a time
Replay a short scene with clear speech and background sound at a comfortable fixed volume. Compare dialogue enhancement on and off, then separately assess loud-sound reduction. If you enable everything together, you may improve one scene without knowing which control mattered.
Apple notes that stronger dialogue enhancement can alter the original mix. Decide whether that trade-off suits your viewing. A quieter late-night setup and a room with a capable surround system may call for different preferences; there is no need to label one setting universally best.
Recheck after changing outputs
Repeat the comparison if you switch from television speakers to headphones or a receiver. The same processing can feel different through another output. Keep the volume low when changing destinations so the comparison remains comfortable.
If speech remains distorted only in one programme, compare another item and report the exact track and title. If every application is affected through one speaker path, investigate that path. An audio preference should solve a listening goal, not hide a repeatable media or hardware fault.