Join Date: Dec 2008
Location: San Diego County, CA, USA
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The Polk CS1 center is the weak link here, besides the sub. The CS2 would be a better fit, but if the CS1 works for you, then it isn't necessary to upgrade it--put the money towards a decently large sub instead. On the other hand, if you find that the center is lacking, then maybe you should upgrade it. Try using a phantom center (i.e. temporarily turn off the center speaker in your receiver's settings) to find out whether there is a significant improvement in dynamics or sound quality.