1500W RF amp
RF amp 1000W
The 1500W amps from RF costs 485$, the 1000W amp costs 400$?
No need to spend 850 on a RF amp, the 485$ amp will put out more then 1500W.
With the DC sub it will pound, don't know how much the sub costs, but he could stay under 1000$ for the whole system.
I know the Fi BL would be a nice sub too, and it costs 324$.
EDIT: Link fixed