I bought 2 10" Power Reference subs about a year and a half ago, but havent installed them yet. It lists the 10", 12", and 15" subs as 200 watts RMS and 400 Peak for each one. Sensitivity or impedance is 87 for the 10", 88 for the 12" and 91 for the 15". They may be 2002 models because the...