This is a very large and heavy center channel speaker - be ready for that. It takes some power to drive it well. I would suggest at least 120 watts. With that in mind, the dialog is crystal clear, natural, and transparent from this speaker. It matches my LSiM front channel speakers for performance, and sounds much better than other center channels I have tried. Very happy with this (expensive) Polk purchase.
Hello Michael, Thank you for the 5 star review of the Polk LSiM706c center channel! Combining this with the matching LSiM front speakers creates an amazing home theater experience, congratulations! We can point out that the amount of power necessary to drive these speakers will vary from owner to owner; depending upon the size of the listening room, the type of program material favored and the relative playing volumes. We'd be happy to make system recommendations through our customer service department at: 1-800-377-7655 (select option 1). Best regards, Ken, Polk Customer Service
Ok, I know what you may be thinking...$1,200 for a center channel speaker seems pretty steep!! WELL, I certainly thought so as well but knowing that Polk Audio makes AMAZING speakers I took the plunge and got this big boy over the smaller LSiM704 model. The verdict???? SO HAPPY I went with the 706C!!!
I am using an Emotiva XPA-3 external power amp to drive the speaker and using the pre-amp outputs from a Denon AVR-3313ci receiver. This center channel speaker sounds great at all volume levels BUT REALLY comes to LIFE when you crank it up with a Blu-ray movie! It can not only handle serious volume/power but it does so with crystal clear clarity and no audible strain whatsoever. I dare you to put in the original Matrix and watch the infamous "lobby" scene where Trinity and Neo engage in their colossal gun fight and push the volume as hard as you can. This speaker can handle it with ease!!
I must also mention that it is not only the heavy duty action movies that sound great on this speaker. I'm watching the recent "Bible" mini-series from the history channel on Blu-Ray which has a lot of voice narration. The narrator's voice has incredible richness in the low/mid frequencies and also the crystal clear high end from the excellent ring tweeter in the LSiM706C.
Overall, this is hands down the best sounding center channel speaker I've ever owned and heard. Hats off to Polk Audio for creating a center channel speaker that can handle intense power and volume but also can highlight the soft nuances at any volume level. Construction is top notch as well!!