Good to have you on the forums.
Well I may break it to you that 15k is a little on the lower side if you want a sub-woofer and a two way front setup, which would give you the required result.
In your budget, you can buy a good pair of branded coaxial speakers, JBL, Hertz, Pioneer, all would do.
You may squeeze in a HU in there with the remaining money you have, but I would rather advise you to save up a little more and buy decent equipment aik he dafa.
Happy Listening!