Summary: I wanted to upgrade from the CSI4 but I didn't want to spend all that money for CSI6, at 225.00 can't beat the price and it is a beautiful, sound matched speaker to my other RTI speakers, (A3 fronts/A1 rears) excellent center channel, sounds great and purchased from Polk, so it's under warranty for...
Summary: This is a great center speaker with very clear vocals and presence. You should always buy the biggest center channel possible since it carries 60% or more of the movie. It will also give your dialogue more presence, overall weight and anchor the system. Timbre matched with all RTi speakers.
Summary: I like most upper end Polk speakers and I do really like this one. It opens up when you supply clean power to it. I use an Adcom briged amp at 200 watts mono @ .09 THD. This speakers needs power to really open it up, my Onkyo 115 watt output did NOT do the job.
Summary: I purchased this speaker to replace an old Polk CS200 center speaker that had blown a midrange. Checked first with Polk to see which would go best with my 4 older, but still excellent Monitor 7Cs and 5JRs, and the CSi5 was the recommendation.
Summary: I got this bad boy on sale at JR for almost half off furing the fourth of july sale they had. Amazing center channel, adjustable height stand, flip it upside down even. Polk Audio knows exactly how its done my friends. Bi-amp!
Summary: I have had a pair of Polk RTi8's for a few years and was using them without a center. I thought they sounded good as is, but dialogue was getting harder to hear during movies, especially. So following the advice of my fellow Polk People at their forum, I was advised to get the CSi5.