This might seem like a dumb question to most, but I will just throw it out there anyway..... I have a 8" powered sub that is currently hooked up to my Yamaha 5660 reciever via a subwoofer RCA cable, I also have a 15" passive sub that currently is just sitting around. Does it make any sense to hook up this passive sub? With the LR speaker wires running to the passive and then out the front LR? With most or all of the bass going to the powered sub is it really worth it? Thanks!