I had the Bazooka tube professionally installed at Frys this past weekend. The sound it produces works perfectly with the factory Alpine 9 speaker system. We left the factory sub powered up, but reduced the BASS level in the factory radio. This thing hits LOW!!
The installer did not seem to need the LOC, and I haven't had any problems with it cutting off. There seems to be a "flutter" when the bass is hitting hard, but I guess that is because so much air is moving through it.
All is well now...the 2013 Jeep Grand Cherokee is BOOMING!