I have a pair of ADS L1290 towers that I want to use as the front L/R speakers for my home theater. I am planning to build a center speaker to match them, but I just realized today that I have the series 1 version, but most of the literature online is for series 2. I know that the crossover PCBs are different, but what about the XO frequencies? Also, how did the drivers change from series 1 to 2? Would it work to use series 2 tweeters and mid range drivers in my center channel, or would it sound noticably different? Thanks.