You can build this soundbar and subwoofer at home with these detailed build plans. The soundbar is good for tv, movies and music. The build plan consists of a 10 page document and will provide you with dimensions, links to parts and crossover design.
North American customers will be able to buy all the parts for around 230 USD including the amplifier for 86 USD from Parts express.
European customers can buy all the parts for around 300€ from Soundimports including the amplifier for 120€. There is cheaper amplifier alternatives to explore.
The reason I give you different alternatives is due to the shipping costs. You can explore the best alternatives for you.