Generally speaking, yes, you can use speakers in pretty much everywhere. I think you might have to look out for what kind of adapter you use, they are not only there for making plug fit to the socket.
Regarding voltage, I would check online, different countries have different ranges, but I think India should be well within western standards.
You should then check on your power adapter for the voltage
or for the logo of certification (by that I mean those funny looking symbols, often with letters, which depict if a product is free for use and sale in a country, India apparently looks like this (scroll down) : https://www.certification-india.com/en/bis/bis-certification-process/)