I dont see that it is going to be all that useful, it is rare that even the biggest most expensive center channels go lower than 40-50HZ, IMO there would be alot more centers that go alot deeper if the center channel justified it or demanded it, it just doesnt seem to be needed, but your results are the only important isuue.
I use full range speakers in the front and a sub in the back wich is similar to using 2 subs and I really like the results, more of a 3d bass and being near the sub it really gives that kick you can feel (although my HSU sub will make you feel it wherever it is) all the same I like it better than when it was up closer in the room...good luck!
I use full range speakers in the front and a sub in the back wich is similar to using 2 subs and I really like the results, more of a 3d bass and being near the sub it really gives that kick you can feel (although my HSU sub will make you feel it wherever it is) all the same I like it better than when it was up closer in the room...good luck!