I just ordered a pair of 170's. With the other speakers I've had over the last several years I always had a problem with strong sibilance. Some speakers more than others. I had a pair of the Wharfdale Diamond 10.2's and the sibilance on those was strong. I know that some recordings are poorly mastered and have more sibilance than well recorded cds do. How are the 170's on vocals? Will they tame sibilance or enhance it?