I have one lone Behringer Truth B2031 for sale. The box is open but It's never been used. -Ultra-linear frequency response from 50 Hz to 21 kHz with individual frequency diagrams. -Ultra-high resolution ferrofluid-cooled tweeter Built-in 265-Watt Bi-amp module with enormous power reserve. -Long-throw 8 ¾" woofer with special polypropylene diaphragm and deformation-resistant aluminum die-cast chassis. -Active crossover network with 4th order Linkwitz-Riley filters.