I was talking with my boss telling him I was gonna install some new speakers soon, and he brought up that he has some subwoofers laying around that his son used to have. He offered them to me, and at first I didn't know how good they would be and what I would have to buy with them etc, but I told him I would take a look at them and I was genuinly surprised. They are two 10 inch type R Alpines, I don't know the model, but they are in a custom box with a Kenwood amp (either 1500 watts or 1000) mounted on the back. When I installed the speakers I bought previously (which also happened to be Alpines) I installed the subs with it, and they sound amazing. So that made me wonder, how much are those subs, box, and amp worth combined?