Nope.
The internal speakers of most laptops are somewhere between anemic and pitiful. There are some exceptions, but for the most part, the internal speakers suck and there is no way to improve them.
Thankfully, you don’t have to use them. There are a variety of external speakers available, though I personally do not like any set that doesn’t have it’s own amplifier. The one @lillycoyote has one; you can tell because it lists it’s own battery life. Those that lack their own amp are generally barely louder or better than the laptop speakers, and thus not worth the money, weight, or time.