Quote Originally Posted by Sir Terrence the Terrible
You are going to inevitibley run into one subwoofer performance peaking before other, which will cripple the entire bass region. The only thing crossover will do is control how much upper frequency information get's into the subwoofer system, it will not control how much deep bass is running into each system. You could turn the weaker one down, but then that eleminates the very reason for having two - driver coppling, and the smoothing of the frequency response over the first row.
I have a friend with a very nice HT system that uses 3 subs, (two matched 10" and one 15") the bottom end of his systems is ridiculously huge but sounds very good. I’m not trying to prove some crazy off the wall point, but I have listened to this set up that you say will not work. Simply, if done right, you can do it.