but where can i get 1 or 2 for around 500?

 

Used is about the only bet, that is kind of scary though. I would not want to spend my money on something with zero warranty. Go for one now and a add a second when the budget allows. Build the box now and have it ready for sub#2 down the road.

 

what about FI audio?
heard ne thing about the Q or btl series?