Are two subs usual better than one? Case in point...Crutchfield will ship two JBL GT120's for $160. The Tempest runs $150 shipped. For just a home theater, would having two GT120's in separate enclosures be better than say a single Tempest. The Tempest would be limited to an enclosure size of 224L or below. The GT120's look like they would work great in a 95L enclsoure. I have an old Carver TFM-35 amp with plenty of power for both subs. The sub crossover and phase would be taken care of by the new Yamaha Rx-V750.