Modern TVs often suffer from poor built-in speakers that face the wrong direction and lack power for clear audio.
All TV speakers are bad. They're not just bad, but even with most of the best TVs, they're facing the wrong way: backward. While there are some TVs with front-facing or behind-the-screen speakers, even these don't sound great. Not only does this mean lifeless, boring sound quality, but it can also make dialogue hard to understand, especially when there's a lot of other audio. As TVs get thinner and thinner, one casualty is increasingly mediocre audio performance.