New Delhi, July 10 -- You've finally bought a new smart TV, and now it's time to upgrade the audio. As you start looking for a soundbar, you notice that 5.1 models cost considerably more than 2.1 options. It seems like an easy decision because more speakers should mean better sound. But that's exactly where many buyers make an expensive mistake.

The best soundbar isn't always the one with the most speakers. It depends on how you watch TV, the size of your room and whether you'll actually benefit from surround sound. For many homes, spending extra on a 5.1 soundbar simply isn't necessary. Here's how to figure out which one is actually worth buying.

One of the biggest misconceptions is that more speakers automatically mean better sound. T...