Hi gaby95. The Polk XT15 doesn't have a threaded insert...so it might not be the best choice. I was able to install a mount on my XT15s so I can use them as my front heights and do what you are planning on doing and crossed over at 80hz...it sounds great! So, if you're able to, install a mount...if not, I believe that the Polk ES10 might be another option that has a 1/4" 20 threaded insert that is a little more in cost. Hope this helps!