Cant find samsung soundbar

Hey guys!

I am an brand new owner of an Macbook pro retina 13" (2015) and I love it!

I also have an Mac Pro 1,1 and it can pair with my Samsung soundbar (HW-751)

I put my samsung soundbar to bluetooth (my iphone can find it) but my macbook pro can not. How can i fix this?

Thanks in advance