This listing is for a single (1) Definitive Technology BP2000 15" subwoofer, P/N 151137. I have 2 available at the start of the listing. IF YOU WANT TO BUY BOTH, ENTER QTY. 2 AT CHECKOUT. 

 Both subwoofers have been tested with music, a 30Hz test tone & a multi meter. Both are in very good working & cosmetic condition for their age. Impedance is 4 ohms & DCR = 3.6 (#1) & 3.5 (#2).