I was wondering if anyone had tried this, done this or can recommend this. Currently I own a set of the Polk Monitor 104 5.1 package (all speakers consists of 5 inch woofers and tweeter) and was wondering how well the RTi12 speakers might sound with this set especially the center channel or if its not recommended. I am also considering the Monitor 70s which I have sampled and liked though I understand they sound different I still liked their low end performance. My receiver is a Harman 630. The tweeters look almost identical in construction and the RTi12 has two five inch woofers at least the same size so it cant be that bad - I hope.