Verified answer

Lightening Audio IS Rockford Forsgate ! Its their "economy" brand, and mostly the same gear rebadged..

However, a 1000WRMS amp is dropping about double the power then Prime 150 will be, so you're should be louder.

about the same if your just changed your headunit to alpine or kenwood yours would have 5volt output and make u the winner these are beginner systems professionals dont waste there time with these products we got better things to do ps... rockford sucks

You don't have any fronts?!?! lol

Honestly, I couldn't tell you without hearing them or being more familiar with the subs. It also depends on enclosure and positioning. Don't assume more power is better.